Page last updated: 2024-10-24

regulation of cardiac muscle cell contraction

Definition

Target type: biologicalprocess

Any process that modulates the frequency, rate or extent of cardiac muscle cell contraction. [GOC:BHF, GOC:mtg_cardiac_conduct_nov11]

Cardiac muscle contraction is a precisely regulated process that enables the heart to pump blood throughout the body. It involves a complex interplay of electrical and mechanical events, orchestrated by a finely tuned signaling cascade.

**1. Electrical Signaling:**
* **Action Potential Initiation:** The heart's rhythmic contractions are initiated by specialized pacemaker cells in the sinoatrial (SA) node. These cells spontaneously generate action potentials due to a unique combination of ion channels and membrane properties.
* **Action Potential Propagation:** The action potential generated in the SA node spreads throughout the heart via a network of specialized conducting cells. These cells, found in the atrioventricular (AV) node and the Purkinje fibers, rapidly transmit the electrical signal ensuring coordinated contraction of the atria and ventricles.

**2. Excitation-Contraction Coupling:**
* **Calcium Influx:** As the action potential reaches the contractile cardiac muscle cells, it triggers the opening of voltage-gated calcium channels on the sarcolemma (cell membrane). This allows calcium ions to flow into the cell.
* **Calcium-Induced Calcium Release:** The influx of calcium triggers the release of a much larger amount of calcium from intracellular stores, specifically the sarcoplasmic reticulum (SR). This release is mediated by calcium-sensitive ryanodine receptors (RyRs) on the SR membrane.
* **Calcium Binding to Troponin:** The increased intracellular calcium concentration binds to the troponin complex, a protein attached to the thin filament of the sarcomere (the basic contractile unit of muscle). This binding causes a conformational change in troponin, exposing the myosin-binding sites on the actin filament.

**3. Contraction:**
* **Cross-Bridge Cycling:** Myosin, the motor protein of the thick filament, can now bind to the actin filament. This interaction forms a cross-bridge. The binding of ATP to the myosin head breaks the cross-bridge, allowing the myosin head to "cock" and bind to a new site on the actin filament further down the thin filament. This cycle of binding, detachment, and rebinding drives the sliding of the thin filaments past the thick filaments, resulting in muscle shortening and contraction.

**4. Relaxation:**
* **Calcium Removal:** For relaxation to occur, calcium must be removed from the cytoplasm. This is achieved by active transport mechanisms, primarily the calcium ATPase pump, which moves calcium back into the SR.
* **Troponin Dissociation:** As calcium levels decrease, calcium dissociates from troponin. This allows troponin to revert to its original conformation, blocking the myosin-binding sites on actin.
* **Cross-Bridge Detachment:** With myosin-binding sites on actin blocked, the cross-bridges detach, and the sarcomeres return to their relaxed length.

**5. Regulation of Contractile Force:**
* **Calcium Availability:** The amount of calcium released into the cytoplasm directly determines the strength of contraction. Factors influencing calcium availability include the frequency of action potentials, the amount of calcium stored in the SR, and the activity of calcium channels and pumps.
* **Length-Tension Relationship:** The length of the sarcomere at the onset of contraction influences the force generated. There is an optimal length at which maximum force can be produced.
* **Neurohormonal Influences:** The nervous system and hormones can modulate cardiac muscle contraction. For instance, norepinephrine from the sympathetic nervous system increases heart rate and contractility, while acetylcholine from the parasympathetic nervous system slows heart rate.

**In summary, the regulation of cardiac muscle cell contraction is a highly complex process that involves precise coordination of electrical signaling, calcium handling, protein interactions, and neurohormonal influences.**'
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Proteins (5)

ProteinDefinitionTaxonomy
Sodium channel protein type 5 subunit alphaA sodium channel protein type 5 subunit alpha that is encoded in the genome of human. [PRO:WCB, UniProtKB:Q14524]Homo sapiens (human)
cAMP-specific 3',5'-cyclic phosphodiesterase 4DA 3,5-cyclic-AMP phosphodiesterase 4D that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q08499]Homo sapiens (human)
cAMP-specific 3',5'-cyclic phosphodiesterase 4BA 3,5-cyclic-AMP phosphodiesterase 4B that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q07343]Homo sapiens (human)
Sodium/potassium-transporting ATPase subunit alpha-2A sodium/potassium-transporting ATPase subunit alpha-2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P50993]Homo sapiens (human)
Adenosine receptor A1An adenosine receptor A1 that is encoded in the genome of human. [PRO:WCB, UniProtKB:P30542]Homo sapiens (human)

Compounds (308)

CompoundDefinitionClassesRoles
9-ethyladenine
1,3-dipropyl-8-cyclopentylxanthineDPCPX : An oxopurine that is 7H-xanthine substituted at positions 1 and 3 by propyl groups and at position 8 by a cyclohexyl group.oxopurineadenosine A1 receptor antagonist;
EC 3.1.4.* (phosphoric diester hydrolase) inhibitor
enprofyllineenprofylline : Xanthine bearing a propyl substituent at position 3. A bronchodilator, it is used for the symptomatic treatment of asthma and chronic obstructive pulmonary disease, and in the management of cerebrovascular insufficiency, sickle cell disease, and diabetic neuropathy.oxopurineanti-arrhythmia drug;
anti-asthmatic drug;
bronchodilator agent;
non-steroidal anti-inflammatory drug
phenytoinimidazolidine-2,4-dioneanticonvulsant;
drug allergen;
sodium channel blocker;
teratogenic agent
5-(n,n-hexamethylene)amiloride5-(N,N-hexamethylene)amiloride : A member of the class of pyrazines that is amiloride in which the two amino hydrogens at position N-5 are replaced by a hexamethylene moiety, resulting in the formation of an azepane ring.

5-(N,N-hexamethylene)amiloride: inhibitor of Na+-H+ exchange; has anti-HIV-1 activity
aromatic amine;
azepanes;
guanidines;
monocarboxylic acid amide;
organochlorine compound;
pyrazines
antineoplastic agent;
apoptosis inducer;
odorant receptor antagonist;
sodium channel blocker
8-phenyltheophylline8-phenyltheophylline: purinergic P1 receptor antagonist
alfuzosinalfuzosin: structure given in first sourcemonocarboxylic acid amide;
quinazolines;
tetrahydrofuranol
alpha-adrenergic antagonist;
antihypertensive agent;
antineoplastic agent
theophyllinedimethylxanthineadenosine receptor antagonist;
anti-asthmatic drug;
anti-inflammatory agent;
bronchodilator agent;
drug metabolite;
EC 3.1.4.* (phosphoric diester hydrolase) inhibitor;
fungal metabolite;
human blood serum metabolite;
immunomodulator;
muscle relaxant;
vasodilator agent
amiodaroneamiodarone : A member of the class of 1-benzofurans that is 1-benzofuran substituted by a butyl group at position 2 and a 4-[2-(diethylamino)ethoxy]-3,5-diiodobenzoyl group at position 3. It is a cardiovascular drug used for the treatment of cardiac dysrhythmias.

Amiodarone: An antianginal and class III antiarrhythmic drug. It increases the duration of ventricular and atrial muscle action by inhibiting POTASSIUM CHANNELS and VOLTAGE-GATED SODIUM CHANNELS. There is a resulting decrease in heart rate and in vascular resistance.
1-benzofurans;
aromatic ketone;
organoiodine compound;
tertiary amino compound
cardiovascular drug
amitriptylineamitriptyline : An organic tricyclic compound that is 10,11-dihydro-5H-dibenzo[a,d][7]annulene substituted by a 3-(dimethylamino)propylidene group at position 5.

Amitriptyline: Tricyclic antidepressant with anticholinergic and sedative properties. It appears to prevent the re-uptake of norepinephrine and serotonin at nerve terminals, thus potentiating the action of these neurotransmitters. Amitriptyline also appears to antagonize cholinergic and alpha-1 adrenergic responses to bioactive amines.
carbotricyclic compound;
tertiary amine
adrenergic uptake inhibitor;
antidepressant;
environmental contaminant;
tropomyosin-related kinase B receptor agonist;
xenobiotic
bepridilbepridil : A tertiary amine in which the substituents on nitrogen are benzyl, phenyl and 3-(2-methylpropoxy)-2-(pyrrolidin-1-yl)propyl.

Bepridil: A long-acting calcium-blocking agent with significant anti-anginal activity. The drug produces significant coronary vasodilation and modest peripheral effects. It has antihypertensive and selective anti-arrhythmia activities and acts as a calmodulin antagonist.
pyrrolidines;
tertiary amine
anti-arrhythmia drug;
antihypertensive agent;
calcium channel blocker;
vasodilator agent
caffeinepurine alkaloid;
trimethylxanthine
adenosine A2A receptor antagonist;
adenosine receptor antagonist;
adjuvant;
central nervous system stimulant;
diuretic;
EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor;
EC 3.1.4.* (phosphoric diester hydrolase) inhibitor;
environmental contaminant;
food additive;
fungal metabolite;
geroprotector;
human blood serum metabolite;
mouse metabolite;
mutagen;
plant metabolite;
psychotropic drug;
ryanodine receptor agonist;
xenobiotic
verapamil2-(3,4-dimethoxyphenyl)-5-{[2-(3,4-dimethoxyphenyl)ethyl](methyl)amino}-2-(propan-2-yl)pentanenitrile : A tertiary amino compound that is 3,4-dimethoxyphenylethylamine in which the hydrogens attached to the nitrogen are replaced by a methyl group and a 4-cyano-4-(3,4-dimethoxyphenyl)-5-methylhexyl group.

verapamil : A racemate comprising equimolar amounts of dexverapamil and (S)-verapamil. An L-type calcium channel blocker of the phenylalkylamine class, it is used (particularly as the hydrochloride salt) in the treatment of hypertension, angina pectoris and cardiac arrhythmia, and as a preventive medication for migraine.

Verapamil: A calcium channel blocker that is a class IV anti-arrhythmia agent.
aromatic ether;
nitrile;
polyether;
tertiary amino compound
cgs 159439-chloro-2-(2-furyl)-(1,2,4)triazolo(1,5-c)quinazolin-5-imine: non-xanthine triazoloquinazoline adenosine antagonist

CGS 15943 : A member of the class of triazoloquinazolines that is [1,2,4]triazolo[1,5-c]quinazoline substited at positions 2, 5 and 9 by furan-2-yl, amino and chloro groups respectively. A potent antagonist at adenosine A1 and adenosine A2A receptors.
aromatic amine;
biaryl;
furans;
organochlorine compound;
primary amino compound;
quinazolines;
triazoloquinazoline
adenosine A1 receptor antagonist;
adenosine A2A receptor antagonist;
antineoplastic agent;
central nervous system stimulant
chlorpromazinechlorpromazine : A substituted phenothiazine in which the ring nitrogen at position 10 is attached to C-3 of an N,N-dimethylpropanamine moiety.

Chlorpromazine: The prototypical phenothiazine antipsychotic drug. Like the other drugs in this class chlorpromazine's antipsychotic actions are thought to be due to long-term adaptation by the brain to blocking DOPAMINE RECEPTORS. Chlorpromazine has several other actions and therapeutic uses, including as an antiemetic and in the treatment of intractable hiccup.
organochlorine compound;
phenothiazines;
tertiary amine
anticoronaviral agent;
antiemetic;
dopaminergic antagonist;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor;
phenothiazine antipsychotic drug
cifenlinediarylmethane
cilostamidecilostamide: selective inhibitor of cyclic AMP phosphodiesterase & platelet aggregation; structurequinolines
cisapridecisapride : The amide resulting from formal condensation of 4-amino-5-chloro-2-methoxybenzoic acid with cis-1-[3-(4-fluorophenoxy)propyl]-3-methoxypiperidin-4-amine. It has been used (as its monohydrate or as its tartrate) for the treatment of gastro-oesophageal reflux disease and for non-ulcer dyspepsia, but its propensity to cause cardiac arrhythmias resulted in its complete withdrawal from many countries, including the U.K., and restrictions on its use elsewhere.

Cisapride: A substituted benzamide used for its prokinetic properties. It is used in the management of gastroesophageal reflux disease, functional dyspepsia, and other disorders associated with impaired gastrointestinal motility. (Martindale The Extra Pharmacopoeia, 31st ed)
benzamides
5,7-dimethoxycoumarin5,7-dimethoxycoumarin: has photobiological activitycoumarins
clioquinol5-chloro-7-iodoquinolin-8-ol : A monohydroxyquinoline that is quinolin-8-ol in which the hydrogens at positions 5 and 7 are replaced by chlorine and iodine, respectively. It has antibacterial and atifungal properties, and is used in creams for the treatment of skin infections. It has also been investigated as a chelator of copper and zinc ions for the possible treatment of Alzheimer's disease.

Clioquinol: A potentially neurotoxic 8-hydroxyquinoline derivative long used as a topical anti-infective, intestinal antiamebic, and vaginal trichomonacide. The oral preparation has been shown to cause subacute myelo-optic neuropathy and has been banned worldwide.
monohydroxyquinoline;
organochlorine compound;
organoiodine compound
antibacterial agent;
antifungal agent;
antimicrobial agent;
antineoplastic agent;
antiprotozoal drug;
chelator;
copper chelator
clotrimazoleconazole antifungal drug;
imidazole antifungal drug;
imidazoles;
monochlorobenzenes
antiinfective agent;
environmental contaminant;
xenobiotic
denbufyllinedenbufylline: structure given in first sourceoxopurine
desipraminedesipramine : A dibenzoazepine consisting of 10,11-dihydro-5H-dibenzo[b,f]azepine substituted on nitrogen with a 3-(methylamino)propyl group.

Desipramine: A tricyclic dibenzazepine compound that potentiates neurotransmission. Desipramine selectively blocks reuptake of norepinephrine from the neural synapse, and also appears to impair serotonin transport. This compound also possesses minor anticholinergic activity, through its affinity to muscarinic receptors.
dibenzoazepine;
secondary amino compound
adrenergic uptake inhibitor;
alpha-adrenergic antagonist;
antidepressant;
cholinergic antagonist;
drug allergen;
EC 3.1.4.12 (sphingomyelin phosphodiesterase) inhibitor;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor;
H1-receptor antagonist;
serotonin uptake inhibitor
diphenhydramineantitussive : An agent that suppresses cough. Antitussives have a central or a peripheral action on the cough reflex, or a combination of both. Compare with expectorants, which are considered to increase the volume of secretions in the respiratory tract, so facilitating their removal by ciliary action and coughing, and mucolytics, which decrease the viscosity of mucus, facilitating its removal by ciliary action and expectoration.

diphenhydramine : An ether that is the benzhydryl ether of 2-(dimethylamino)ethanol. It is a H1-receptor antagonist used as a antipruritic and antitussive drug.

Diphenhydramine: A histamine H1 antagonist used as an antiemetic, antitussive, for dermatoses and pruritus, for hypersensitivity reactions, as a hypnotic, an antiparkinson, and as an ingredient in common cold preparations. It has some undesired antimuscarinic and sedative effects.
ether;
tertiary amino compound
anti-allergic agent;
antidyskinesia agent;
antiemetic;
antiparkinson drug;
antipruritic drug;
antitussive;
H1-receptor antagonist;
local anaesthetic;
muscarinic antagonist;
oneirogen;
sedative
dipyridamoledipyridamole : A pyrimidopyrimidine that is 2,2',2'',2'''-(pyrimido[5,4-d]pyrimidine-2,6-diyldinitrilo)tetraethanol substituted by piperidin-1-yl groups at positions 4 and 8 respectively. A vasodilator agent, it inhibits the formation of blood clots.

Dipyridamole: A phosphodiesterase inhibitor that blocks uptake and metabolism of adenosine by erythrocytes and vascular endothelial cells. Dipyridamole also potentiates the antiaggregating action of prostacyclin. (From AMA Drug Evaluations Annual, 1994, p752)
piperidines;
pyrimidopyrimidine;
tertiary amino compound;
tetrol
adenosine phosphodiesterase inhibitor;
EC 3.5.4.4 (adenosine deaminase) inhibitor;
platelet aggregation inhibitor;
vasodilator agent
donepezil2-[(1-benzylpiperidin-4-yl)methyl]-5,6-dimethoxyindan-1-one : A member of the class of indanones that is 5,6-dimethoxyindan-1-one which is substituted at position 2 by an (N-benzylpiperidin-4-yl)methyl group.

donepezil : A racemate comprising equimolar amounts of (R)- and (S)-donepezil. A centrally acting reversible acetylcholinesterase inhibitor, its main therapeutic use is in the treatment of Alzheimer's disease where it is used to increase cortical acetylcholine.

Donepezil: An indan and piperidine derivative that acts as a selective and reversible inhibitor of ACETYLCHOLINESTERASE. Donepezil is highly selective for the central nervous system and is used in the management of mild to moderate DEMENTIA in ALZHEIMER DISEASE.
aromatic ether;
indanones;
piperidines;
racemate
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
EC 3.1.1.8 (cholinesterase) inhibitor;
nootropic agent
econazole1-{2-(4-chlorobenzyloxy)-2-(2,4-dichlorophenyl)ethyl}imidazole : A member of the class of imidazoles that is 1-(2,4-dichlorophenyl)-2-(imidazol-1-yl)ethanol in which the hydroxyl hydrogen is replaced by a 4-chlorobenzyl group.

econazole : A racemate composed of equimolar amounts of (R)- and (S)-econazole. Used (as its nitrate salt) to treat skin infections such as athlete's foot, jock itch, ringworm and other fungal skin infections.

Econazole: An imidazole derivative that is commonly used as a topical antifungal agent.
dichlorobenzene;
ether;
imidazoles;
monochlorobenzenes
9-(2-hydroxy-3-nonyl)adenine9-(2-hydroxy-3-nonyl)adenine: specific inhibitor of adenosine deaminase
etazolateetazolate : A pyrazolopyridine that is 1H-pyrazolo[3,4-b]pyridine which is substituted at positions 1, 4, and 5 by ethyl, 2-isopropylidenehydrazino, and ethoxycarbonyl groups, respectively. A phosphodiesterase IV inhibitor with antidepressant and anxiolytic properties.

Etazolate: A potent phosphodiesterase inhibitor proposed as an antipsychotic agent.
ethyl ester;
hydrazone;
pyrazolopyridine
alpha-secretase activator;
antidepressant;
antipsychotic agent;
anxiolytic drug;
GABA agent;
neuroprotective agent;
phosphodiesterase IV inhibitor
flecainideflecainide : A monocarboxylic acid amide obtained by formal condensation of the carboxy group of 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid with the primary amino group of piperidin-2-ylmethylamine. An antiarrhythmic agent used (in the form of its acetate salt) to prevent and treat tachyarrhythmia (abnormal fast rhythm of the heart).

Flecainide: A potent anti-arrhythmia agent, effective in a wide range of ventricular and atrial ARRHYTHMIAS and TACHYCARDIAS.
aromatic ether;
monocarboxylic acid amide;
organofluorine compound;
piperidines
anti-arrhythmia drug
fluoxetinefluoxetine : A racemate comprising equimolar amounts of (R)- and (S)-fluoxetine. A selective serotonin reuptake inhibitor (SSRI), it is used (generally as the hydrochloride salt) for the treatment of depression (and the depressive phase of bipolar disorder), bullimia nervosa, and obsessive-compulsive disorder.

Fluoxetine: The first highly specific serotonin uptake inhibitor. It is used as an antidepressant and often has a more acceptable side-effects profile than traditional antidepressants.

N-methyl-3-phenyl-3-[4-(trifluoromethyl)phenoxy]propan-1-amine : An aromatic ether consisting of 4-trifluoromethylphenol in which the hydrogen of the phenolic hydroxy group is replaced by a 3-(methylamino)-1-phenylpropyl group.
(trifluoromethyl)benzenes;
aromatic ether;
secondary amino compound
haloperidolhaloperidol : A compound composed of a central piperidine structure with hydroxy and p-chlorophenyl substituents at position 4 and an N-linked p-fluorobutyrophenone moiety.

Haloperidol: A phenyl-piperidinyl-butyrophenone that is used primarily to treat SCHIZOPHRENIA and other PSYCHOSES. It is also used in schizoaffective disorder, DELUSIONAL DISORDERS, ballism, and TOURETTE SYNDROME (a drug of choice) and occasionally as adjunctive therapy in INTELLECTUAL DISABILITY and the chorea of HUNTINGTON DISEASE. It is a potent antiemetic and is used in the treatment of intractable HICCUPS. (From AMA Drug Evaluations Annual, 1994, p279)
aromatic ketone;
hydroxypiperidine;
monochlorobenzenes;
organofluorine compound;
tertiary alcohol
antidyskinesia agent;
antiemetic;
dopaminergic antagonist;
first generation antipsychotic;
serotonergic antagonist
ibudilastpyrazolopyridine
lidocainelidocaine : The monocarboxylic acid amide resulting from the formal condensation of N,N-diethylglycine with 2,6-dimethylaniline.

Lidocaine: A local anesthetic and cardiac depressant used as an antiarrhythmia agent. Its actions are more intense and its effects more prolonged than those of PROCAINE but its duration of action is shorter than that of BUPIVACAINE or PRILOCAINE.
benzenes;
monocarboxylic acid amide;
tertiary amino compound
anti-arrhythmia drug;
drug allergen;
environmental contaminant;
local anaesthetic;
xenobiotic
imipramineimipramine : A dibenzoazepine that is 5H-dibenzo[b,f]azepine substituted by a 3-(dimethylamino)propyl group at the nitrogen atom.

Imipramine: The prototypical tricyclic antidepressant. It has been used in major depression, dysthymia, bipolar depression, attention-deficit disorders, agoraphobia, and panic disorders. It has less sedative effect than some other members of this therapeutic group.
dibenzoazepineadrenergic uptake inhibitor;
antidepressant;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor
amrinoneamrinone : A 3,4'-bipyridine substituted at positions 5 and 6 by an amino group and a keto function respectively. A pyridine phosphodiesterase 3 inhibitor, it is a drug that may improve the prognosis in patients with congestive heart failure.

Amrinone: A positive inotropic cardiotonic (CARDIOTONIC AGENTS) with vasodilator properties, phosphodiesterase 3 inhibitory activity, and the ability to stimulate calcium ion influx into the cardiac cell.
bipyridinesEC 3.1.4.* (phosphoric diester hydrolase) inhibitor
1-methyl-3-isobutylxanthine1-Methyl-3-isobutylxanthine: A potent cyclic nucleotide phosphodiesterase inhibitor; due to this action, the compound increases cyclic AMP and cyclic GMP in tissue and thereby activates CYCLIC NUCLEOTIDE-REGULATED PROTEIN KINASES

3-isobutyl-1-methylxanthine : An oxopurine that is xanthine which is substituted at positions 1 and 3 by methyl and isobutyl groups, respectively.
3-isobutyl-1-methylxanthine
lamotrigine1,2,4-triazines;
dichlorobenzene;
primary arylamine
anticonvulsant;
antidepressant;
antimanic drug;
calcium channel blocker;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor;
environmental contaminant;
excitatory amino acid antagonist;
geroprotector;
non-narcotic analgesic;
xenobiotic
lansoprazoleLansoprazole: A 2,2,2-trifluoroethoxypyridyl derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS. Lansoprazole is a racemic mixture of (R)- and (S)-isomers.benzimidazoles;
pyridines;
sulfoxide
anti-ulcer drug;
EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor
loperamideloperamide : A synthetic piperidine derivative, effective against diarrhoea resulting from gastroenteritis or inflammatory bowel disease.

Loperamide: One of the long-acting synthetic ANTIDIARRHEALS; it is not significantly absorbed from the gut, and has no effect on the adrenergic system or central nervous system, but may antagonize histamine and interfere with acetylcholine release locally.
monocarboxylic acid amide;
monochlorobenzenes;
piperidines;
tertiary alcohol
anticoronaviral agent;
antidiarrhoeal drug;
mu-opioid receptor agonist
losartanlosartan : A biphenylyltetrazole where a 1,1'-biphenyl group is attached at the 5-position and has an additional trisubstituted imidazol-1-ylmethyl group at the 4'-position

Losartan: An antagonist of ANGIOTENSIN TYPE 1 RECEPTOR with antihypertensive activity due to the reduced pressor effect of ANGIOTENSIN II.
biphenylyltetrazole;
imidazoles
angiotensin receptor antagonist;
anti-arrhythmia drug;
antihypertensive agent;
endothelin receptor antagonist
nocodazolearomatic ketone;
benzimidazoles;
carbamate ester;
thiophenes
antimitotic;
antineoplastic agent;
microtubule-destabilising agent;
tubulin modulator
mexiletinemexiletine : An aromatic ether which is 2,6-dimethylphenyl ether of 2-aminopropan-1-ol.

Mexiletine: Antiarrhythmic agent pharmacologically similar to LIDOCAINE. It may have some anticonvulsant properties.
aromatic ether;
primary amino compound
anti-arrhythmia drug
miconazole1-[2-(2,4-dichlorobenzyloxy)-2-(2,4-dichlorophenyl)ethyl]imidazole : A member of the class of imidazoles that is 1-(2,4-dichlorophenyl)-2-(imidazol-1-yl)ethanol in which the hydroxyl hydrogen is replaced by a 2,4-dichlorobenzyl group.

miconazole : A racemate composed of equimolar amounts of (R)- and (S)-miconazole. Used (as its nitrate salt) to treat skin infections such as athlete's foot, jock itch, ringworm and other fungal skin infections. It inhibits the synthesis of ergosterol, a critical component of fungal cell membranes.

Miconazole: An imidazole antifungal agent that is used topically and by intravenous infusion.
dichlorobenzene;
ether;
imidazoles
milrinonebipyridines;
nitrile;
pyridone
cardiotonic drug;
EC 3.1.4.17 (3',5'-cyclic-nucleotide phosphodiesterase) inhibitor;
platelet aggregation inhibitor;
vasodilator agent
n 0840N(6)-cyclopentyl-9-methyladenine: selective, orally active A(1) adenosine receptor antagonist
nifedipineNifedipine: A potent vasodilator agent with calcium antagonistic action. It is a useful anti-anginal agent that also lowers blood pressure.C-nitro compound;
dihydropyridine;
methyl ester
calcium channel blocker;
human metabolite;
tocolytic agent;
vasodilator agent
nimodipinenimodipine : A dihydropyridine that is 1,4-dihydropyridine which is substituted by methyl groups at positions 2 and 6, a (2-methoxyethoxy)carbonyl group at position 3, a m-nitrophenyl group at position 4, and an isopropoxycarbonyl group at position 5. An L-type calcium channel blocker, it acts particularly on cerebral circulation, and is used both orally and intravenously for the prevention and treatment of subarachnoid hemorrhage from ruptured intracranial aneurysm.

Nimodipine: A calcium channel blockader with preferential cerebrovascular activity. It has marked cerebrovascular dilating effects and lowers blood pressure.
2-methoxyethyl ester;
C-nitro compound;
dicarboxylic acids and O-substituted derivatives;
diester;
dihydropyridine;
isopropyl ester
antihypertensive agent;
calcium channel blocker;
cardiovascular drug;
vasodilator agent
nitrendipinenitrendipine : A dihydropyridine that is 1,4-dihydropyridine substituted by methyl groups at positions 2 and 6, a 3-nitrophenyl group at position 4, a ethoxycarbonyl group at position 3 and a methoxycarbonyl group at position 5. It is a calcium-channel blocker used in the treatment of hypertension.

Nitrendipine: A calcium channel blocker with marked vasodilator action. It is an effective antihypertensive agent and differs from other calcium channel blockers in that it does not reduce glomerular filtration rate and is mildly natriuretic, rather than sodium retentive.
C-nitro compound;
dicarboxylic acids and O-substituted derivatives;
diester;
dihydropyridine;
ethyl ester;
methyl ester
antihypertensive agent;
calcium channel blocker;
geroprotector;
vasodilator agent
omeprazole5-methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole : A member of the class of benzimidazoles that is 1H-benzimidazole which is substituted by a [4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl group at position 2 and a methoxy group at position 5.

omeprazole : A racemate comprising equimolar amounts of (R)- and (S)-omeprazole.

Omeprazole: A 4-methoxy-3,5-dimethylpyridyl, 5-methoxybenzimidazole derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits an H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS.
aromatic ether;
benzimidazoles;
pyridines;
sulfoxide
pantoprazolepantoprazole : A member of the class of benzimidazoles that is 1H-benzimidazole substituted by a difluoromethoxy group at position 5 and a [(3,4-dimethoxypyridin-2-yl)methyl]sulfinyl group at position 2.

Pantoprazole: 2-pyridinylmethylsulfinylbenzimidazole proton pump inhibitor that is used in the treatment of GASTROESOPHAGEAL REFLUX and PEPTIC ULCER.
aromatic ether;
benzimidazoles;
organofluorine compound;
pyridines;
sulfoxide
anti-ulcer drug;
EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor;
environmental contaminant;
xenobiotic
papaverinepapaverine : A benzylisoquinoline alkaloid that is isoquinoline substituted by methoxy groups at positions 6 and 7 and a 3,4-dimethoxybenzyl group at position 1. It has been isolated from Papaver somniferum.

Papaverine: An alkaloid found in opium but not closely related to the other opium alkaloids in its structure or pharmacological actions. It is a direct-acting smooth muscle relaxant used in the treatment of impotence and as a vasodilator, especially for cerebral vasodilation. The mechanism of its pharmacological actions is not clear, but it apparently can inhibit phosphodiesterases and it may have direct actions on calcium channels.
benzylisoquinoline alkaloid;
dimethoxybenzene;
isoquinolines
antispasmodic drug;
vasodilator agent
pentoxifyllineoxopurine
propafenonepropafenone : An aromatic ketone that is 3-(propylamino)propane-1,2-diol in which the hydrogen of the primary hydroxy group is replaced by a 2-(3-phenylpropanoyl)phenyl group. It is a class 1C antiarrhythmic drug with local anesthetic effects, and is used as the hydrochloride salt in the management of supraventricular and ventricular arrhythmias.

Propafenone: An antiarrhythmia agent that is particularly effective in ventricular arrhythmias. It also has weak beta-blocking activity.
aromatic ketone;
secondary alcohol;
secondary amino compound
anti-arrhythmia drug
propranololpropranolol : A propanolamine that is propan-2-ol substituted by a propan-2-ylamino group at position 1 and a naphthalen-1-yloxy group at position 3.

Propranolol: A widely used non-cardioselective beta-adrenergic antagonist. Propranolol has been used for MYOCARDIAL INFARCTION; ARRHYTHMIA; ANGINA PECTORIS; HYPERTENSION; HYPERTHYROIDISM; MIGRAINE; PHEOCHROMOCYTOMA; and ANXIETY but adverse effects instigate replacement by newer drugs.
naphthalenes;
propanolamine;
secondary amine
anti-arrhythmia drug;
antihypertensive agent;
anxiolytic drug;
beta-adrenergic antagonist;
environmental contaminant;
human blood serum metabolite;
vasodilator agent;
xenobiotic
quetiapinedibenzothiazepine;
N-alkylpiperazine;
N-arylpiperazine
adrenergic antagonist;
dopaminergic antagonist;
histamine antagonist;
second generation antipsychotic;
serotonergic antagonist
risperidonerisperidone : A member of the class of pyridopyrimidines that is 2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimidin-4-one carrying an additional 2-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]ethyl group at position 2.

Risperidone: A selective blocker of DOPAMINE D2 RECEPTORS and SEROTONIN 5-HT2 RECEPTORS that acts as an atypical antipsychotic agent. It has been shown to improve both positive and negative symptoms in the treatment of SCHIZOPHRENIA.
1,2-benzoxazoles;
heteroarylpiperidine;
organofluorine compound;
pyridopyrimidine
alpha-adrenergic antagonist;
dopaminergic antagonist;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor;
H1-receptor antagonist;
psychotropic drug;
second generation antipsychotic;
serotonergic antagonist
4-(3-butoxy-4-methoxybenzyl)-2-imidazolidinone4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinone: Inhibitor of phosphodiesterases.methoxybenzenes
roliprampyrrolidin-2-onesantidepressant;
EC 3.1.4.* (phosphoric diester hydrolase) inhibitor
streptonigrinpyridines;
quinolone
antimicrobial agent;
antineoplastic agent
terfenadineTerfenadine: A selective histamine H1-receptor antagonist devoid of central nervous system depressant activity. The drug was used for ALLERGY but withdrawn due to causing LONG QT SYNDROME.diarylmethane
tetracainetetracaine : A benzoate ester in which 4-N-butylbenzoic acid and 2-(dimethylamino)ethanol have combined to form the ester bond; a local ester anaesthetic (ester caine) used for surface and spinal anaesthesia.

Tetracaine: A potent local anesthetic of the ester type used for surface and spinal anesthesia.
benzoate ester;
tertiary amino compound
local anaesthetic
thalidomide2-(2,6-dioxopiperidin-3-yl)-1H-isoindole-1,3(2H)-dione : A dicarboximide that is isoindole-1,3(2H)-dione in which the hydrogen attached to the nitrogen is substituted by a 2,6-dioxopiperidin-3-yl group.

thalidomide : A racemate comprising equimolar amounts of R- and S-thalidomide.

Thalidomide: A piperidinyl isoindole originally introduced as a non-barbiturate hypnotic, but withdrawn from the market due to teratogenic effects. It has been reintroduced and used for a number of immunological and inflammatory disorders. Thalidomide displays immunosuppressive and anti-angiogenic activity. It inhibits release of TUMOR NECROSIS FACTOR-ALPHA from monocytes, and modulates other cytokine action.
phthalimides;
piperidones
thioridazinethioridazine : A phenothiazine derivative having a methylsulfanyl subsitituent at the 2-position and a (1-methylpiperidin-2-yl)ethyl] group at the N-10 position.

Thioridazine: A phenothiazine antipsychotic used in the management of PHYCOSES, including SCHIZOPHRENIA.
phenothiazines;
piperidines
alpha-adrenergic antagonist;
dopaminergic antagonist;
EC 1.8.1.12 (trypanothione-disulfide reductase) inhibitor;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor;
first generation antipsychotic;
H1-receptor antagonist;
serotonergic antagonist
tinoridinetinoridine: proposed anti-inflammatory agent; minor descriptor (75-86); on-line & INDEX MEDICUS seach PYRIDINES (75-86)thienopyridine
tofisopamtofisopam: structure; dextofisopam is the R-enantiomer of tofisopam & antidiarrhealorganic molecular entity
trequinsintrequinsin: RN given refers to parent cpd; structure given in first sourcepyridopyrimidine
8-(4-((2-aminoethyl)aminocarbonylmethyloxy)phenyl)-1,3-dipropylxanthine8-(4-((2-aminoethyl)aminocarbonylmethyloxy)phenyl)-1,3-dipropylxanthine: adenosine receptor antagonist
zardaverinezardaverine : A pyridazinone derivative in which pyridazin-3(2H)-one is substituted at C-6 with a 4-(difluoromethoxy)-3-methoxyphenyl group. It is a phosphodiesterase inhibitor, selective for PDE3 and 4.

zardaverine: structure given in first source
organofluorine compound;
pyridazinone
anti-asthmatic drug;
bronchodilator agent;
EC 3.1.4.* (phosphoric diester hydrolase) inhibitor;
peripheral nervous system drug
triiodothyronine3,3',5-triiodo-L-thyronine : An iodothyronine compound having iodo substituents at the 3-, 3'- and 5-positions. Although some is produced in the thyroid, most of the 3,3',5-triiodo-L-thyronine in the body is generated by mono-deiodination of L-thyroxine in the peripheral tissues. Its metabolic activity is about 3 to 5 times that of L-thyroxine. The sodium salt is used in the treatment of hypothyroidism.

Triiodothyronine: A T3 thyroid hormone normally synthesized and secreted by the thyroid gland in much smaller quantities than thyroxine (T4). Most T3 is derived from peripheral monodeiodination of T4 at the 5' position of the outer ring of the iodothyronine nucleus. The hormone finally delivered and used by the tissues is mainly T3.
2-halophenol;
amino acid zwitterion;
iodophenol;
iodothyronine
human metabolite;
mouse metabolite;
thyroid hormone
adenosine monophosphateAdenosine Monophosphate: Adenine nucleotide containing one phosphate group esterified to the sugar moiety in the 2'-, 3'-, or 5'-position.adenosine 5'-phosphate;
purine ribonucleoside 5'-monophosphate
adenosine A1 receptor agonist;
cofactor;
EC 3.1.3.1 (alkaline phosphatase) inhibitor;
EC 3.1.3.11 (fructose-bisphosphatase) inhibitor;
fundamental metabolite;
micronutrient;
nutraceutical
6-phenyl-1,3,5-triazine-2,4-diamine6-phenyl-1,3,5-triazine-2,4-diamine: structure in first source
1-hydroxyphthalazine1-hydroxyphthalazine: RN given refers to cpd with unspecified locants; do not confuse with cpd phthalazinol RN: 56611-65-5phthalazines
2-chloroadenosine5-chloroformycin A: structure given in first sourcepurine nucleoside
azacitidine5-azacytidine : An N-glycosyl-1,3,5-triazine that is 4-amino-1,3,5-triazin-2(1H)-one substituted by a beta-D-ribofuranosyl residue via an N-glycosidic linkage. An antineoplastic agent, it is used in the treatment of myeloid leukaemia.

Azacitidine: A pyrimidine analogue that inhibits DNA methyltransferase, impairing DNA methylation. It is also an antimetabolite of cytidine, incorporated primarily into RNA. Azacytidine has been used as an antineoplastic agent.
N-glycosyl-1,3,5-triazine;
nucleoside analogue
antineoplastic agent
prenylaminePrenylamine: A drug formerly used in the treatment of angina pectoris but superseded by less hazardous drugs. Prenylamine depletes myocardial catecholamine stores and has some calcium channel blocking activity. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1406)diarylmethane
alpha-naphthoflavonealpha-naphthoflavone : An extended flavonoid resulting from the formal fusion of a benzene ring with the h side of flavone. A synthetic compound, it is an inhibitor of aromatase (EC 1.14.14.14).

alpha-naphthoflavone: inhibits P4501A1 and P4501A2; stimulates some activities of P4503A4
extended flavonoid;
naphtho-gamma-pyrone;
organic heterotricyclic compound
aryl hydrocarbon receptor agonist;
aryl hydrocarbon receptor antagonist;
EC 1.14.14.14 (aromatase) inhibitor
digoxigenindigoxigenin : A hydroxy steroid that consists of 5beta-cardanolide having a double bond at the 20(22)-position as well as hydroxy groups at the 3beta-, 12beta- and 14beta-positions. It has been isolated from the plant species of the genus Digitalis.

Digoxigenin: 3 beta,12 beta,14-Trihydroxy-5 beta-card-20(22)-enolide. A cardenolide which is the aglycon of digoxin. Can be obtained by hydrolysis of digoxin or from Digitalis orientalis L. and Digitalis lanata Ehrh.
12beta-hydroxy steroid;
14beta-hydroxy steroid;
3beta-hydroxy steroid;
3beta-sterol
hapten;
plant metabolite
amilorideamiloride : A member of the class of pyrazines resulting from the formal monoacylation of guanidine with the carboxy group of 3,5-diamino-6-chloropyrazine-2-carboxylic acid.

Amiloride: A pyrazine compound inhibiting SODIUM reabsorption through SODIUM CHANNELS in renal EPITHELIAL CELLS. This inhibition creates a negative potential in the luminal membranes of principal cells, located in the distal convoluted tubule and collecting duct. Negative potential reduces secretion of potassium and hydrogen ions. Amiloride is used in conjunction with DIURETICS to spare POTASSIUM loss. (From Gilman et al., Goodman and Gilman's The Pharmacological Basis of Therapeutics, 9th ed, p705)
aromatic amine;
guanidines;
organochlorine compound;
pyrazines
diuretic;
sodium channel blocker
pimozidepimozide : A member of the class of benzimidazoles that is 1,3-dihydro-2H-benzimidazol-2-one in which one of the nitrogens is substituted by a piperidin-4-yl group, which in turn is substituted on the nitrogen by a 4,4-bis(p-fluorophenyl)butyl group.

Pimozide: A diphenylbutylpiperidine that is effective as an antipsychotic agent and as an alternative to HALOPERIDOL for the suppression of vocal and motor tics in patients with Tourette syndrome. Although the precise mechanism of action is unknown, blockade of postsynaptic dopamine receptors has been postulated. (From AMA Drug Evaluations Annual, 1994, p403)
benzimidazoles;
heteroarylpiperidine;
organofluorine compound
antidyskinesia agent;
dopaminergic antagonist;
first generation antipsychotic;
H1-receptor antagonist;
serotonergic antagonist
9-benzyladenine
mexiletine hydrochloridemexiletine hydrochloride : A hydrochloride composed of equimolar amounts of mexiletine and hydrogen chloride.hydrochlorideanti-arrhythmia drug
3-deazaadenosine3-deazaadenosine: RN given refers to parent cpd.
8-bromo cyclic adenosine monophosphate8-Br-cAMP : A 3',5'-cyclic purine nucleotide that is 3',5'-cyclic AMP bearing an additional bromo substituent at position 8 on the adenine ring. An activator of cyclic AMP-dependent protein kinase, but resistant to degradation by cyclic AMP phosphodiesterase.

8-Bromo Cyclic Adenosine Monophosphate: A long-acting derivative of cyclic AMP. It is an activator of cyclic AMP-dependent protein kinase, but resistant to degradation by cyclic AMP phosphodiesterase.
3',5'-cyclic purine nucleotide;
adenyl ribonucleotide;
organobromine compound
antidepressant;
protein kinase agonist
cartazolatecartazolate: structure
ribavirinRebetron: Rebetron is tradename1-ribosyltriazole;
aromatic amide;
monocarboxylic acid amide;
primary carboxamide
anticoronaviral agent;
antiinfective agent;
antimetabolite;
antiviral agent;
EC 2.7.7.49 (RNA-directed DNA polymerase) inhibitor
diltiazemdiltiazem : A 5-[2-(dimethylamino)ethyl]-2-(4-methoxyphenyl)-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepin-3-yl acetate in which both stereocentres have S configuration. A calcium-channel blocker and vasodilator, it is used as the hydrochloride in the management of angina pectoris and hypertension.

Diltiazem: A benzothiazepine derivative with vasodilating action due to its antagonism of the actions of CALCIUM ion on membrane functions.
5-[2-(dimethylamino)ethyl]-2-(4-methoxyphenyl)-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepin-3-yl acetateantihypertensive agent;
calcium channel blocker;
vasodilator agent
mefloquine(-)-(11S,2'R)-erythro-mefloquine : An optically active form of [2,8-bis(trifluoromethyl)quinolin-4-yl]-(2-piperidyl)methanol having (-)-(11S,2'R)-erythro-configuration. An antimalarial agent, used in racemic form, which acts as a blood schizonticide; its mechanism of action is unknown.[2,8-bis(trifluoromethyl)quinolin-4-yl]-(2-piperidyl)methanolantimalarial
lidamidinelidamidine: synonym WHR-1142A refers to HCl; structureureas
lovastatinlovastatin : A fatty acid ester that is mevastatin carrying an additional methyl group on the carbobicyclic skeleton. It is used in as an anticholesteremic drug and has been found in fungal species such as Aspergillus terreus and Pleurotus ostreatus (oyster mushroom).

Lovastatin: A fungal metabolite isolated from cultures of Aspergillus terreus. The compound is a potent anticholesteremic agent. It inhibits 3-hydroxy-3-methylglutaryl coenzyme A reductase (HYDROXYMETHYLGLUTARYL COA REDUCTASES), which is the rate-limiting enzyme in cholesterol biosynthesis. It also stimulates the production of low-density lipoprotein receptors in the liver.
delta-lactone;
fatty acid ester;
hexahydronaphthalenes;
polyketide;
statin (naturally occurring)
anticholesteremic drug;
antineoplastic agent;
Aspergillus metabolite;
prodrug
enoximoneEnoximone: A selective phosphodiesterase inhibitor with vasodilating and positive inotropic activity that does not cause changes in myocardial oxygen consumption. It is used in patients with CONGESTIVE HEART FAILURE.aromatic ketone
imazodanimazodan: RN & structure given in first source;
ranolazineN-(2,6-dimethylphenyl)-2-{4-[2-hydroxy-3-(2-methoxyphenoxy)propyl]piperazin-1-yl}acetamide : An aromatic amide obtained by formal condensation of the carboxy group of 2-{4-[2-hydroxy-3-(2-methoxyphenoxy)propyl]piperazin-1-yl}acetic acid with the amino group of 2,6-dimethylaniline.

ranolazine : A racemate comprising equal amounts of (R)- and (S)-ranolazine. Used for treatment of chronic angina.

Ranolazine: An acetanilide and piperazine derivative that functions as a SODIUM CHANNEL BLOCKER and prevents the release of enzymes during MYOCARDIAL ISCHEMIA. It is used in the treatment of ANGINA PECTORIS.
aromatic amide;
monocarboxylic acid amide;
monomethoxybenzene;
N-alkylpiperazine;
secondary alcohol
sertindolesertindole : A phenylindole that is 1H-indole which is substituted on the nitrogen by a p-chlorophenyl group, at position 5 by chlorine, and at position 3 by a piperidin-4-yl group, which is itself substituted on the nitrogen by a 2-(2-oxoimidazolidin-1-yl)ethyl group.heteroarylpiperidine;
imidazolidinone;
organochlorine compound;
organofluorine compound;
phenylindole
alpha-adrenergic antagonist;
H1-receptor antagonist;
second generation antipsychotic;
serotonergic antagonist
mibefradilMibefradil: A benzimidazoyl-substituted tetraline that selectively binds and inhibits CALCIUM CHANNELS, T-TYPE.tetralinsT-type calcium channel blocker
duloxetineduloxetine
adenosinequinquefolan B: isolated from roots of Panax quinquefolium L.; RN not in Chemline 10/87; RN from Toxlitadenosines;
purines D-ribonucleoside
analgesic;
anti-arrhythmia drug;
fundamental metabolite;
human metabolite;
vasodilator agent
nelfinavirnelfinavir : An aryl sulfide that is used (as its mesylate salt) for treatment of HIV and also exhibits some anticancer properties.

Nelfinavir: A potent HIV protease inhibitor. It is used in combination with other antiviral drugs in the treatment of HIV in both adults and children.
aryl sulfide;
benzamides;
organic heterobicyclic compound;
phenols;
secondary alcohol;
tertiary amino compound
antineoplastic agent;
HIV protease inhibitor
rolofyllinerolofylline: selective antagonist for adenosine receptors; a cardiovascular agentoxopurine
metrifudil
tedisamiltedisamil : A member of the class of diazabicyclononanes that is (1s,5s)-3,7-diazaspiro[bicyclo[3.3.1]nonane-9,1'-cyclopentane] in which the hydrogens at positions 3 and 7 are replaced by cyclopropylmethyl groups. It is a potassium channel blocker and an antiarrhythmic agent currently currently in development for the treatment of atrial fibrillation.
tolafentrinetolafentrine: a mixed-type phosphodiesterase (PDE) III/IV inhibitor
nitraquazonenitraquazone: structure given in first source
9-methyladenine9-methyladenine : Adenine substituted with a methyl group at position N-9.methyladeninemetabolite
nebivolol2,2'-iminobis[1-(6-fluoro-3,4-dihydro-2H-chromen-2-yl)ethanol] : A member of the class of chromanes that is 2,2'-iminodiethanol in which one hydrogen attached to each hydroxy-bearing carbon is replaced by a 6-fluorochroman-2-yl group.chromanes;
diol;
organofluorine compound;
secondary alcohol;
secondary amino compound
uk 68798aromatic ether;
sulfonamide;
tertiary amino compound
anti-arrhythmia drug;
potassium channel blocker
cipamfyllinecipamfylline: a PDE type-4 inhibitoroxopurine
7-methyladenine7-methyladenine : Adenine substituted with a methyl group at position N-7.

7-methyladenine: potential marker for monitoring exposure to methylatingcarcinogens
methyladeninemetabolite
9-(2,3-dihydroxypropyl)adenine, (s)-isomer
doripenemDoripenem: A carbapenem derivative antibacterial agent that is more stable to renal dehydropeptidase I than IMIPENEM, but does not need to be given with an enzyme inhibitor such as CILASTATIN. It is used in the treatment of infections such as HOSPITAL-ACQUIRED PNEUMONIA, and complicated intra-abdominal or urinary-tract infections, including PYELONEPHRITIS.carbapenems
8-bromoadenine8-bromoadenine: affects DNA repair
ethyl 3-amino-1h-pyrazole-4-carboxylateethyl 3-amino-1H-pyrazole-4-carboxylate: structure in first source
8-((4-chlorophenyl)thio)cyclic-3',5'-amp8-((4-chlorophenyl)thio)cyclic-3',5'-AMP: lowers cAMP in heart & fat cells; cAMP-dependent kinase inhibitor

8-(4-chlorophenylthio)-cAMP : A 3',5'-cyclic purine nucleotide that is 3',5'-cyclic AMP in which the hydrogen at position 2 on the purine fragment is replaced by a 4-chlorophenylthio group.
3',5'-cyclic purine nucleotide;
adenyl ribonucleotide;
aryl sulfide;
organochlorine compound
protein kinase agonist
n(6)-benzyladenosineN(6)-benzyladenosine: RN given refers to parent cpd
5-methylcytidinemethylcytidine
digoxigenin-bis(digitoxoside)cardenolide glycoside
phenylisopropyladenosinearomatic amine;
benzenes;
hydrocarbyladenosine;
purine nucleoside;
secondary amino compound
adenosine A1 receptor agonist;
neuroprotective agent
8-thio-benzyl cyclic amp8-thio-benzyl cyclic AMP: RN given refers to parent cpd
5'-n-methylcarboxamideadenosine5'-N-methylcarboxamideadenosine: RN given refers to (beta-D)-isomer
8-chloro-cyclic adenosine monophosphate
n(6)-phenyladenosinepurine nucleoside
n-methyladenosineN-methyladenosine: is a inhibitor of cell differentiation

N(6)-methyladenosine : A methyladenosine compound with one methyl group attached to N(6) of the adenine nucleobase.
methyladenosine
2'-o-methyladenosinecordysinin B : A member of the class of adenosines that is adenosine in which the hydroxy group at position 2' is replaced by a methoxy group. It has been isolated from the mycelia of Cordyceps sinensis.adenosines;
ether
fungal metabolite
tadalafilbenzodioxoles;
pyrazinopyridoindole
EC 3.1.4.35 (3',5'-cyclic-GMP phosphodiesterase) inhibitor;
vasodilator agent
paliperidone3-{2-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]ethyl}-9-hydroxy-2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimidin-4-one : A member of the class of pyridopyrimidines that is 9-hydroxy-2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimidin-4-one carrying an additional 2-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]ethyl group at position 2.

paliperidone : A racemate comprising equimolar amounts of (R)- and (S)-paliperidone. Paliperidone is the primary active metabolite of the older antipsychotic risperidone and is used for treatment of schizophrenia.
1,2-benzoxazoles;
heteroarylpiperidine;
organofluorine compound;
pyridopyrimidine;
secondary alcohol
4-phenylpyrrolidone-2
pd 81723PD 81723: adenosine binding enhancer; structure given in first source
n(6)-(3-iodobenzyl)-5'-n-methylcarboxamidoadenosine3-iodobenzyl-5'-N-methylcarboxamidoadenosine : A derivative of adenosine in which the 5'-hydroxymethyl group is replaced by N-ethylcarboxamido and one of the hydrogens of the exocyclic amino function is substituted by a 3-iodobenzyl group.

N(6)-(3-iodobenzyl)-5'-N-methylcarboxamidoadenosine: structure given in first source; a selective A(3) adenosine receptor agonist
adenosines;
monocarboxylic acid amide;
organoiodine compound
adenosine A3 receptor agonist
2-chloro-n(6)cyclopentyladenosine2-chloro-N(6)cyclopentyladenosine: highly selective agonist at A1 adenosine receptors
desvenlafaxineO-desmethylvenlafaxine : A tertiary amino compound that is N,N-dimethylethanamine substituted at position 1 by a 1-hydroxycyclohexyl and 4-hydroxyphenyl group. It is a metabolite of the drug venlafaxine.cyclohexanols;
phenols;
tertiary amino compound
antidepressant;
drug metabolite;
marine xenobiotic metabolite
adenosine amine congeneradenosine amine congener: a highly potent & selective adenosine A1 receptor agonist
8-(4-carboxymethyloxy)phenyl-1,3-dipropylxanthine8-(4-carboxymethyloxy)phenyl-1,3-dipropylxanthine: used to localize adenosine receptors in the brain
cdp 840
7-bromoeudistomine d7-bromoeudistomine D: inducer of calcium release from fragmented sarcoplasmic reticulum
7-benzylamino-6-chloro-2-piperazino-4-pyrrolidinopteridine7-benzylamino-6-chloro-2-piperazino-4-pyrrolidinopteridine: inibits growth of B16 melanoma & MCF-7 mammary carcinoma cells
kfm 19KFM 19: a potential cognitive enhancer and a selective adenosine A1 receptor antagonist
8-cyclopentyl-3-(3-((4-(fluorosulfonyl)benzoyl)oxy)propyl)-1-propylxanthine8-cyclopentyl-3-(3-((4-(fluorosulfonyl)benzoyl)oxy)propyl)-1-propylxanthine: structure given in first source
9-(2-hydroxy-3-nonyl)adenine(2R,3S)-EHNA : EHNA of absolute configuration 2R,3S. Selective inhibitor of cGMP-stimulated phosphodiesterase (PDE2) (IC50 = 0.8 - 4 mM). Also a potent inhibitor of adenosine deaminase.EHNAEC 3.1.4.* (phosphoric diester hydrolase) inhibitor;
EC 3.5.4.4 (adenosine deaminase) inhibitor
9-(2-hydroxy-3-nonyl)adenine(2S,3R)-EHNA : EHNA of absolute configuration 2S,3R.EHNA
cilomilastmethoxybenzenes
moxifloxacinmoxifloxacin : A quinolone that consists of 4-oxo-1,4-dihydroquinoline-3-carboxylic acid bearing a cyclopropyl substituent at position 1, a fluoro substitiuent at position 6, a (4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl group at position 7 and a methoxy substituent at position 8. A member of the fluoroquinolone class of antibacterial agents.

Moxifloxacin: A fluoroquinolone that acts as an inhibitor of DNA TOPOISOMERASE II and is used as a broad-spectrum antibacterial agent.
aromatic ether;
cyclopropanes;
fluoroquinolone antibiotic;
pyrrolidinopiperidine;
quinolinemonocarboxylic acid;
quinolone;
quinolone antibiotic
antibacterial drug
rostafuroxinrostafuroxin: structure in first source
solifenacinisoquinolines
rp 73401piclamilast : A monocarboxylic acid amide resulting from the formal condensation of the carboxy group of 3-(cyclopentyloxy)-4-methoxybenzoic acid with the primary amino group of 3,5-dichloropyridin-4-amine.

piclamilast: an antiasthmatic agent and phosphodiesterase 4 inhibitor; structure in first source
aromatic ether;
benzamides;
chloropyridine;
monocarboxylic acid amide
anti-asthmatic drug;
anti-inflammatory agent;
bronchodilator agent;
phosphodiesterase IV inhibitor
moracin cbenzofurans
(+)-rolipram(+)-rolipram : The (S)-enantiomer of rolipram.rolipram
tecadenosontecadenoson: an A1 adenosine receptor agonist
telbivudinepyrimidine 2'-deoxyribonucleosideantiviral drug;
EC 2.7.7.49 (RNA-directed DNA polymerase) inhibitor
1-deazaadenosine1-deazaadenosine: inhibits nucleic acid & protein synthesis; structure given in first source
n(6)-benzyl-cyclic adenosine 5'-monophosphate
sb 203580imidazoles;
monofluorobenzenes;
pyridines;
sulfoxide
EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor;
EC 2.7.11.24 (mitogen-activated protein kinase) inhibitor;
geroprotector;
Hsp90 inhibitor;
neuroprotective agent
zm 241385ZM 241385: a high affinity radioligand selective for the A2a adenosine receptordiamino-1,3,5-triazine
sch 58261triazolopyrimidines
betulinan abetulinan A: a lipid peroxidation inhibitor; from Lenzites betulina; structure given in first source
moracin mmoracin M: has been isolated from Morus alba L.; structure in first sourcebenzofurans
etravirineaminopyrimidine;
aromatic ether;
dinitrile;
organobromine compound
antiviral agent;
HIV-1 reverse transcriptase inhibitor
lapatinibfurans;
organochlorine compound;
organofluorine compound;
quinazolines
antineoplastic agent;
tyrosine kinase inhibitor
2-(4-morpholinoanilino)-6-cyclohexylaminopurine2-(4-morpholinoanilino)-6-cyclohexylaminopurine: structure in first sourcemorpholines;
purines;
secondary amino compound;
tertiary amino compound
adenosine A3 receptor antagonist;
antineoplastic agent;
Aurora kinase inhibitor;
cell dedifferentiation agent
darunavirdarunavir : An N,N-disubstituted benzenesulfonamide bearing an unsubstituted amino group at the 4-position, used for the treatment of HIV infection. A second-generation HIV protease inhibitor, darunavir was designed to form robust interactions with the protease enzyme from many strains of HIV, including those from treatment-experienced patients with multiple resistance mutations to other protease inhibitors.

Darunavir: An HIV PROTEASE INHIBITOR that is used in the treatment of AIDS and HIV INFECTIONS. Due to the emergence of ANTIVIRAL DRUG RESISTANCE when used alone, it is administered in combination with other ANTI-HIV AGENTS.
carbamate ester;
furofuran;
sulfonamide
antiviral drug;
HIV protease inhibitor
deferasiroxdeferasirox : A member of the class of triazoles, deferasirox is 1,2,4-triazole substituted by a 4-carboxyphenyl group at position 1 and by 2-hydroxyphenyl groups at positions 3 and 5. An orally active iron chelator, it is used to manage chronic iron overload in patients receiving long-term blood transfusions.

Deferasirox: A triazole and benzoate derivative that acts as a selective iron chelator. It is used in the management of chronic IRON OVERLOAD due to blood transfusion or non-transfusion dependent THALASSEMIA.
benzoic acids;
monocarboxylic acid;
phenols;
triazoles
iron chelator
mesembrenonemesembrenone: a psychoactive compound isolated from Sceletium tortuosum; structure in first sourcepyrrolidines
regadenosonpurine nucleoside
lacosamideLacosamide: An acetamide derivative that acts as a blocker of VOLTAGE-GATED SODIUM CHANNELS. It is used as an anticonvulsant, for adjunctive or monotherapy, in the treatment of PARTIAL SEIZURES.N-acyl-amino acid
mrs 10673,6-dichloro-2'-isopropyloxy-4'-methylflavone: structure in first source
mrs 12209-chloro-2-(2-furyl)-5-phenylacetylamino(1,2,4)triazolo(1,5-c)quinazoline: structure in first sourcequinazolines
ouabaincardiac glycoside : Steroid lactones containing sugar residues that act on the contractile force of the cardiac muscles.

ouabain : A steroid hormone that is a multi-hydroxylated alpha-L-rhamnosyl cardenoloide. It binds to and inhibits the plasma membrane Na(+)/K(+)-ATPase (sodium pump). It has been isolated naturally from Strophanthus gratus.

Ouabain: A cardioactive glycoside consisting of rhamnose and ouabagenin, obtained from the seeds of Strophanthus gratus and other plants of the Apocynaceae; used like DIGITALIS. It is commonly used in cell biological studies as an inhibitor of the NA(+)-K(+)-EXCHANGING ATPASE.
11alpha-hydroxy steroid;
14beta-hydroxy steroid;
5beta-hydroxy steroid;
alpha-L-rhamnoside;
cardenolide glycoside;
steroid hormone
anti-arrhythmia drug;
cardiotonic drug;
EC 2.3.3.1 [citrate (Si)-synthase] inhibitor;
EC 3.1.3.41 (4-nitrophenylphosphatase) inhibitor;
EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor;
EC 3.6.3.9 (Na(+)/K(+)-transporting ATPase) inhibitor;
ion transport inhibitor;
plant metabolite
quinidinequinidine : A cinchona alkaloid consisting of cinchonine with the hydrogen at the 6-position of the quinoline ring substituted by methoxy.

Quinidine: An optical isomer of quinine, extracted from the bark of the CHINCHONA tree and similar plant species. This alkaloid dampens the excitability of cardiac and skeletal muscles by blocking sodium and potassium currents across cellular membranes. It prolongs cellular ACTION POTENTIALS, and decreases automaticity. Quinidine also blocks muscarinic and alpha-adrenergic neurotransmission.
cinchona alkaloidalpha-adrenergic antagonist;
anti-arrhythmia drug;
antimalarial;
drug allergen;
EC 1.14.13.181 (13-deoxydaunorubicin hydroxylase) inhibitor;
EC 3.6.3.44 (xenobiotic-transporting ATPase) inhibitor;
muscarinic antagonist;
P450 inhibitor;
potassium channel blocker;
sodium channel blocker
digitoxindigitoxin : A cardenolide glycoside in which the 3beta-hydroxy group of digitoxigenin carries a 2,6-dideoxy-beta-D-ribo-hexopyranosyl-(1->4)-2,6-dideoxy-beta-D-ribo-hexopyranosyl-(1->4)-2,6-dideoxy-beta-D-ribo-hexopyranosyl trisaccharide chain.

Digitoxin: A cardiac glycoside sometimes used in place of DIGOXIN. It has a longer half-life than digoxin; toxic effects, which are similar to those of digoxin, are longer lasting. (From Martindale, The Extra Pharmacopoeia, 30th ed, p665)
cardenolide glycosideEC 3.6.3.9 (Na(+)/K(+)-transporting ATPase) inhibitor
tolterodinetertiary amineantispasmodic drug;
muscarinic antagonist;
muscle relaxant
darifenacindarifenacin : 2-[(3S)-1-Ethylpyrrolidin-3-yl]-2,2-diphenylacetamide in which one of the hydrogens at the 2-position of the ethyl group is substituted by a 2,3-dihydro-1-benzofuran-5-yl group. It is a selective antagonist for the M3 muscarinic acetylcholine receptor, which is primarily responsible for bladder muscle contractions, and is used as the hydrobromide salt in the management of urinary incontinence.1-benzofurans;
monocarboxylic acid amide;
pyrrolidines
antispasmodic drug;
muscarinic antagonist
resveratroltrans-resveratrol : A resveratrol in which the double bond has E configuration.resveratrolantioxidant;
phytoalexin;
plant metabolite;
quorum sensing inhibitor;
radical scavenger
cocainecocaine : A tropane alkaloid obtained from leaves of the South American shrub Erythroxylon coca.

Cocaine: An alkaloid ester extracted from the leaves of plants including coca. It is a local anesthetic and vasoconstrictor and is clinically used for that purpose, particularly in the eye, ear, nose, and throat. It also has powerful central nervous system effects similar to the amphetamines and is a drug of abuse. Cocaine, like amphetamines, acts by multiple mechanisms on brain catecholaminergic neurons; the mechanism of its reinforcing effects is thought to involve inhibition of dopamine uptake.
benzoate ester;
methyl ester;
tertiary amino compound;
tropane alkaloid
adrenergic uptake inhibitor;
central nervous system stimulant;
dopamine uptake inhibitor;
environmental contaminant;
local anaesthetic;
mouse metabolite;
plant metabolite;
serotonin uptake inhibitor;
sodium channel blocker;
sympathomimetic agent;
vasoconstrictor agent;
xenobiotic
rolipram(-)-rolipram : The (R)-enantiomer of rolipram.rolipram
adenosine-5'-(n-ethylcarboxamide)Adenosine-5'-(N-ethylcarboxamide): A stable adenosine A1 and A2 receptor agonist. Experimentally, it inhibits cAMP and cGMP phosphodiesterase activity.

N-ethyl-5'-carboxamidoadenosine : A derivative of adenosine in which the 5'-hydroxymethyl group is replaced by an N-ethylcarboxamido group.
adenosines;
monocarboxylic acid amide
adenosine A1 receptor agonist;
adenosine A2A receptor agonist;
antineoplastic agent;
EC 3.1.4.* (phosphoric diester hydrolase) inhibitor;
vasodilator agent
diethylstilbestroldiethylstilbestrol : An olefinic compound that is trans-hex-3-ene in which the hydrogens at positions 3 and 4 have been replaced by p-hydroxyphenyl groups.

Diethylstilbestrol: A synthetic nonsteroidal estrogen used in the treatment of menopausal and postmenopausal disorders. It was also used formerly as a growth promoter in animals. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), diethylstilbestrol has been listed as a known carcinogen. (Merck, 11th ed)
olefinic compound;
polyphenol
antifungal agent;
antineoplastic agent;
autophagy inducer;
calcium channel blocker;
carcinogenic agent;
EC 1.1.1.146 (11beta-hydroxysteroid dehydrogenase) inhibitor;
EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor;
endocrine disruptor;
xenoestrogen
mesoprammesopram: a potent & selective type IV phosphodiesterase inhibitor
roflumilastaromatic ether;
benzamides;
chloropyridine;
cyclopropanes;
organofluorine compound
anti-asthmatic drug;
phosphodiesterase IV inhibitor
wr-142,490(+)-(11R,2'S)-erythro-mefloquine : An optically active form of [2,8-bis(trifluoromethyl)quinolin-4-yl]-(2-piperidyl)methanol having (+)-(11R,2'S)-erythro-configuration. An antimalarial agent, used in racemic form, which acts as a blood schizonticide; its mechanism of action is unknown.[2,8-bis(trifluoromethyl)quinolin-4-yl]-(2-piperidyl)methanolantimalarial
s 1033(trifluoromethyl)benzenes;
imidazoles;
pyridines;
pyrimidines;
secondary amino compound;
secondary carboxamide
anticoronaviral agent;
antineoplastic agent;
tyrosine kinase inhibitor
cyclic nucleotide phosphodiesterases, type 4
n(6)-cyclopentyladenosine
sch-202676SCH-202676: An allosteric modulator of both agonist and antagonist binding to G protein-coupled receptors; structure in first source
5-amino-3-(4-methoxyphenyl)-4-oxo-1-thieno[3,4-d]pyridazinecarboxylic acid ethyl estermethoxybenzenes;
substituted aniline
ica-121431ICA-121431: structure in first source
hc 0300312-(1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl)-N-(4-isopropylphenyl)acetamide: a TRPA1 channel blocker
eggmanoneeggmanone: a phosphodiesterase-4 inhibitor; structure in first source
digoxindigoxin : A cardenolide glycoside that is digitoxin beta-hydroxylated at C-12. A cardiac glycoside extracted from the foxglove plant, Digitalis lanata, it is used to control ventricular rate in atrial fibrillation and in the management of congestive heart failure with atrial fibrillation, but the margin between toxic and therapeutic doses is small.

Digoxin: A cardiotonic glycoside obtained mainly from Digitalis lanata; it consists of three sugars and the aglycone DIGOXIGENIN. Digoxin has positive inotropic and negative chronotropic activity. It is used to control ventricular rate in ATRIAL FIBRILLATION and in the management of congestive heart failure with atrial fibrillation. Its use in congestive heart failure and sinus rhythm is less certain. The margin between toxic and therapeutic doses is small. (From Martindale, The Extra Pharmacopoeia, 30th ed, p666)
cardenolide glycoside;
steroid saponin
anti-arrhythmia drug;
cardiotonic drug;
EC 3.6.3.9 (Na(+)/K(+)-transporting ATPase) inhibitor;
epitope
tamoxifenstilbenoid;
tertiary amino compound
angiogenesis inhibitor;
antineoplastic agent;
bone density conservation agent;
EC 1.2.3.1 (aldehyde oxidase) inhibitor;
EC 2.7.11.13 (protein kinase C) inhibitor;
estrogen antagonist;
estrogen receptor antagonist;
estrogen receptor modulator
5-(6-aminopurin-9-yl)-N-ethyl-3,4-dihydroxy-2-oxolanecarboxamidepurine nucleoside
3-(n,n-dimethylsulfonamido)-4-methyl-nitrobenzeneBRL-50481 : A C-nitro compound that is benzene substituted by N,N-dimethylaminosulfonyl, methyl and nitro groups at positions 1, 2 and 5, respectively. It is a phosphodiesterase inhibitor selective for the PDE7 subtype (Ki = 180 nM).C-nitro compound;
sulfonamide;
toluenes
bone density conservation agent;
EC 3.1.4.53 (3',5'-cyclic-AMP phosphodiesterase) inhibitor;
geroprotector
maraviroctropane alkaloid
4,5-dihydro-6-(4-(imidazol-1-yl)phenyl)-5-methyl-3(2h)-pyridazinone4,5-dihydro-6-(4-(imidazol-1-yl)phenyl)-5-methyl-3(2H)-pyridazinone: RN & structure given in first source
tetomilast
3-hydroxymexiletine3-hydroxymexiletine: metabolite of mexiletine; structure given in first source
fk 838FK 838: an adenosine subtype-1 receptor antagonist; structure given in first source
2-chloro-n(6)-(3-iodobenzyl)adenosine-5'-n-methyluronamide2-chloro-N(6)-(3-iodobenzyl)adenosine-5'-N-methyluronamide: structure given in first source
adenosine-5'-(N-propyl)carboxamideadenosine-5'-(N-propyl)carboxamide : A monocarboxylic acid amide that is the propyl amide of adenosine 5'-carboxylic acid.adenosines;
monocarboxylic acid amide
dasatinibdasatinib (anhydrous) : An aminopyrimidine that is 2-methylpyrimidine which is substituted at position 4 by the primary amino group of 2-amino-1,3-thiazole-5-carboxylic acid and at position 6 by a 4-(2-hydroxyethyl)piperazin-1-yl group, and in which the carboxylic acid group has been formally condensed with 2-chloro-6-methylaniline to afford the corresponding amide. A multi-targeted kinase inhibitor, it is used, particularly as the monohydrate, for the treatment of chronic, accelerated, or myeloid or lymphoid blast phase chronic myeloid leukemia. Note that the name 'dasatinib' is used to refer to the monohydrate (USAN) as well as to anhydrous dasatinib (INN).

N-(2-chloro-6-methylphenyl)-2-((6-(4-(2-hydroxyethyl)piperazin-1-yl)-2-methylpyrimidin-4-yl)amino)-1,3-thiazole-5-carboxamide: a dasatinib prodrug; structure in first source
1,3-thiazoles;
aminopyrimidine;
monocarboxylic acid amide;
N-(2-hydroxyethyl)piperazine;
N-arylpiperazine;
organochlorine compound;
secondary amino compound;
tertiary amino compound
anticoronaviral agent;
antineoplastic agent;
tyrosine kinase inhibitor
2-(4-(2-carboxyethyl)phenethylamino)-5'-n-ethylcarboxamidoadenosine2-(4-(2-carboxyethyl)phenethylamino)-5'-N-ethylcarboxamidoadenosine: A2 adenosine receptor agonist; structure given in first source

CGS-21680 : A derivative of adenosine in which the 5'-hydroxymethyl group is replaced by N-ethylcarboxamido and the hydrogen at position 2 on the adenine is replaced by a 4-(2-carboxyethyl)phenethylamino group.
adenosines;
dicarboxylic acid monoamide;
monocarboxylic acid
adenosine A2A receptor agonist;
anti-inflammatory agent
mrs 15232,3-diethyl-4,5-dipropyl-6-phenylpyridine-3-thiocarboxylate-5-carboxylate: adenosine A3 receptor antagonist
digitoxigenindigitoxigenin : A 5beta-cardenolide that is 5beta-cardanolide with hydroxy substituents at the 3beta- and 14beta-positions and double bond unsaturation at C(20)-C(22).

Digitoxigenin: 3 beta,14-Dihydroxy-5 beta-card-20(22)enolide. A cardenolide which is the aglycon of digitoxin. Synonyms: Cerberigenin; Echujetin; Evonogenin; Thevetigenin.
14beta-hydroxy steroid;
3beta-hydroxy steroid
sitagliptinsitagliptin : A triazolopyrazine that exhibits hypoglycemic activity.triazolopyrazine;
trifluorobenzene
EC 3.4.14.5 (dipeptidyl-peptidase IV) inhibitor;
environmental contaminant;
hypoglycemic agent;
serine proteinase inhibitor;
xenobiotic
genistein7-hydroxyisoflavonesantineoplastic agent;
EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor;
geroprotector;
human urinary metabolite;
phytoestrogen;
plant metabolite;
tyrosine kinase inhibitor
mangostinalpha-mangostin : A member of the class of xanthones that is 9H-xanthene substituted by hydroxy group at positions 1, 3 and 6, a methoxy group at position 7, an oxo group at position 9 and prenyl groups at positions 2 and 8. Isolated from the stems of Cratoxylum cochinchinense, it exhibits antioxidant, antimicrobial and antitumour activities.

mangostin: xanthone from rind of Garcinia mangostana Linn. fruit
aromatic ether;
phenols;
xanthones
antimicrobial agent;
antineoplastic agent;
antioxidant;
plant metabolite
morusinmorusin : An extended flavonoid that is flavone substituted by hydroxy groups at positions 5, 2' and 4', a prenyl group at position 3 and a 2,2-dimethyl pyran group across positions 7 and 8.

morusin: from Morus root bark; structure given in first source
extended flavonoid;
trihydroxyflavone
antineoplastic agent;
plant metabolite
pterostilbenediether;
methoxybenzenes;
stilbenol
anti-inflammatory agent;
antineoplastic agent;
antioxidant;
apoptosis inducer;
hypoglycemic agent;
neuroprotective agent;
neurotransmitter;
plant metabolite;
radical scavenger
indolidanindolidan: structure given in first source
naloxonenaloxone : A synthetic morphinane alkaloid that is morphinone in which the enone double bond has been reduced to a single bond, the hydrogen at position 14 has been replaced by a hydroxy group, and the methyl group attached to the nitrogen has been replaced by an allyl group. A specific opioid antagonist, it is used (commonly as its hydrochloride salt) to reverse the effects of opioids, both following their use of opioids during surgery and in cases of known or suspected opioid overdose.

Naloxone: A specific opiate antagonist that has no agonist activity. It is a competitive antagonist at mu, delta, and kappa opioid receptors.
morphinane alkaloid;
organic heteropentacyclic compound;
tertiary alcohol
antidote to opioid poisoning;
central nervous system depressant;
mu-opioid receptor antagonist
mre 3008-f20MRE 3008-F20: InChIKey: CJRNHKSLHHWUAB-UHFFFAOYSA-N
istradefyllineoxopurine
osip 339391UCS15A: from Streptomyces; structure in first source
psb 1115oxopurine
n-(1-methyl-2-phenylethyl)adenosine, (s)-isomer
silodosinsilodosin: an alpha(1a)-adrenoceptor-selective antagonist; structure given in first sourceindolecarboxamide
cudraflavone ccudraflavone C : A tetrahydroxyflavone that is flavone substituted by hydroxy groups at positions 5, 7, 2' and 4' and prenyl groups at positions 3 and 6. Isolated from Morus nigra, it exhibits antibacterial and cytotoxic activities.

cudraflavone C: a tyrosinase inhibitor with antimicrobial activity; isolated from Artocarpus integer; structure in first source
tetrahydroxyflavoneantibacterial agent;
antineoplastic agent;
plant metabolite
fluvoxaminefluvoxamine : An oxime O-ether that is benzene substituted by a (1E)-N-(2-aminoethoxy)-5-methoxypentanimidoyl group at position 1 and a trifluoromethyl group at position 4. It is a selective serotonin reuptake inhibitor that is used for the treatment of obsessive-compulsive disorder.

Fluvoxamine: A selective serotonin reuptake inhibitor that is used in the treatment of DEPRESSION and a variety of ANXIETY DISORDERS.
(trifluoromethyl)benzenes;
5-methoxyvalerophenone O-(2-aminoethyl)oxime
antidepressant;
anxiolytic drug;
serotonin uptake inhibitor
su 11248monocarboxylic acid amide;
pyrroles
angiogenesis inhibitor;
antineoplastic agent;
EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor;
immunomodulator;
neuroprotective agent;
vascular endothelial growth factor receptor antagonist
fosbretabulinstilbenoid
8-(3-chlorostyryl)caffeine8-(3-chlorostyryl)caffeine : Caffeine substituted at its 8-position by an (E)-3-chlorostyryl group.

8-(3-chlorostyryl)caffeine: adenosine antagonist
monochlorobenzenes;
trimethylxanthine
adenosine A2A receptor antagonist;
EC 1.4.3.4 (monoamine oxidase) inhibitor
isoalloxazineisoalloxazine: structurebenzo[g]pteridine-2,4-dione
3,4',5-trimethoxystilbene3,4',5-trimethoxystilbene: structure in first source
enkephalin, ala(2)-mephe(4)-gly(5)-peptide
alvimopan anhydrousalvimopan: mu opioid receptor antagonist; intended to treat constipation in patients taking opiates for painpeptide
9-Hydroxycalabaxanthonexanthones
7-chloro-4-hydroxy-2-phenyl-1,8-naphthyridine
palonosetronpalonosetron : An organic heterotricyclic compound that is an antiemetic used (as its hydrochloride salt) in combination with netupitant (under the trade name Akynzeo) to treat nausea and vomiting in patients undergoing cancer chemotherapy.

Palonosetron: Isoquinoline and quinuclidine derivative that acts as a 5-HT3 RECEPTOR antagonist. It is used in the prevention of nausea and vomiting induced by cytotoxic chemotherapy, and for the prevention of post-operative nausea and vomiting.
azabicycloalkane;
delta-lactam;
organic heterotricyclic compound
antiemetic;
serotonergic antagonist
ciproxifanaromatic ketone
bw a1433BW A1433: adenosine receptor antagonist
fk 453FK 453: adenosine A1 receptor antagonist; structure given in first source; a new antihypertensive agent with diuretic action in isolated rabbit aorta; FR113452 is the S-(-) enantiomer of FK 453
everolimuscyclic acetal;
cyclic ketone;
ether;
macrolide lactam;
primary alcohol;
secondary alcohol
anticoronaviral agent;
antineoplastic agent;
geroprotector;
immunosuppressive agent;
mTOR inhibitor
kf 17837
gw 1929GW 1929: activates peroxisome proliferator-activated receptor-gamma; structure in first sourcebenzophenones
mrs 1754oxopurine
lu 208075ambrisentan: an ET(A) receptor antagonist and antihypertensive agent; studied for use in pulmonary arterial hypertensiondiarylmethane
binodenoson
5-amino-4-oxo-3-phenyl-1-thieno[3,4-d]pyridazinecarboxylic acidorganonitrogen heterocyclic compound;
organosulfur heterocyclic compound
sch 351591SCH 351591: a phosphodiesterase 4 inhibitor; structure in first source

SCH-351591 : An aromatic amide resulting from the formal condensation of the carboxy group of 8-methoxy-2-(trifluoromethyl)quinoline-5-carboxylic acid with the primary amino group of 3,5-dichloropyridin-4-amine 1-oxide. It is a potent inhibitor of phosphodiesterase IV (PDE4).
atl 146eBMS-068645: structure in first source
n-demethylloperamidedesmethyl loperamide : A monocarboxylic acid amide that is the methylamide of 4-[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]-2,2-diphenylbutanoic acid.

N-demethylloperamide: loperamide metabolite; structure in first source
monocarboxylic acid amide;
monochlorobenzenes;
piperidines;
tertiary alcohol
drug metabolite
rs 14203RS 14203: a type IV cyclic nucleotide phosphodiesterase inhibitor; structure in first source
rwj 68354
gsk 256066
n(6)-cyclohexyladenosineN(6)-cyclohexyladenosine: structure given in first source; receptors, purinergic P1 agonist
ci 1044CI 1044: inhibits PDE4; structure in first source
l-454,560L-454,560: Phosphodiesterase Inhibitor; structure in first source
st 1535
t 1032T 1032: a cyclic GMP phosphodiesterase-5 inhibitor; structure in first source
n-((1s,trans)-2-hydroxycyclopentyl)adenosineN-((1S,trans)-2-hydroxycyclopentyl)adenosine: structure given in first source; an adenosine A1 receptor agonistpurine nucleoside
2-(2-(4-chlorophenyl)ethoxy)adenosine2-(2-(4-chlorophenyl)ethoxy)adenosine: a adenosine A2A receptor agonist
l-826,141L-826,141: structure in first source
bay-68-4986
4-n-butyl-1-(4-(2-methylphenyl)-4-oxo-1-butyl)-piperidine hydrogen chloride
8-(methylthio)cyclic 3',5'-adenosine monophosphate8-(methylthio)cyclic 3',5'-adenosine monophosphate: structure
2-(2-furanyl)-7-(2-(4-(4-(2-methoxyethoxy)phenyl)-1-piperazinyl)ethyl)-7h-pyrazolo(4,3-e)(1,2,4)triazolo(1,5-c)pyrimidine-5-amine
licoflavone clicoflavone C: Antimutagenic Agent; a naturally occurring prenyl-flavone extracted from Genista ephedroides; structure in first source
vuf 8504
n(6)-(2,2-diphenylethyl)adenosineN(6)-(2,2-diphenylethyl)adenosine: adenosine receptor agonist; structure given in first source
n-cyclopropyl adenosine-5'-carboxamide
phakellistatin 2phakellistatin 2: isolated from the marine sponge Phakellia carteri; structure in first source
sch 442416SCH 442416: an adenosine A2A receptor ligandtriazolopyrimidines
tetrodotoxin
mrs 3558
cvt-68833-ethyl-1-propyl-8-(1-(3-trifluoromethylbenzyl)-1H-pyrazol-4-yl)-3,7-dihydropurine-2,6-dione: structure in first source
oglemilastoglemilast: a PDE4 inhibitor and NSAID; no further info available 1/2006
apremilastaromatic ether;
N-acetylarylamine;
phthalimides;
sulfone
non-steroidal anti-inflammatory drug;
phosphodiesterase IV inhibitor
f-amidineF-amidine: structure in first sourceN-acylglycine
ino-8875INO-8875: structure in first source
tozadenanttozadenant: an adenosine A2A receptor antagonistbenzothiazoles
psb 361-butyl-8-(3-noradamantyl)-3-(3-hydroxypropyl)xanthine: an A1 receptor antagonistoxopurine
lj 529
digitoxigenin monodigitoxosidedigitoxigenin monodigitoxoside: RN given refers to (ribo-3beta,5beta)-isomer
evomonosideevomonoside : A cardenolide glycoside consisting of digitoxigenin having an alpha-L-rhamnosyl moiety attached at the O(3)-position.

evomonoside: a cytotoxic cardiac glycoside from Lepidium apetalum; RN refers to (3beta,5beta)-isomer
cardenolide glycoside
8-benzylthio-n(6)-n-butyladenosine cyclic-3,5'-monophosphate8-benzylthio-N(6)-n-butyladenosine cyclic-3,5'-monophosphate: may be useful as myocardial stimulant; structure given in first source
lyonisidelyoniside: see also eleutherosides & syringin for eleutheroside B: 118-34-3; RN given refers to (3beta)-isomer
a 803467A 803467: an Nav1.8 sodium channel blocker; structure in first source
cnv1014802vixotrigine: a sodium channel blocker
pf 04217903quinolines
3-(2,5-dimethoxyphenyl)-6-(3,4-dimethoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazinetriazoles
zetekitoxin abzetekitoxin AB: a sodium channel blocker; isolated from the frog Atelopus zeteki; structure in first source
v 20063-(4-amino-3-methylbenzyl)-7-(2-furyl)-3H-(1,2,3)triazolo(4,5-d)pyrimidine-5-amine: antiparkinson agent; structure in first source
halisulfate 1halisulfate 1: an isocitrate lyase inhibitor sesterterpene sulfate from sponge, Hippospongia sp.; structure in first sourceorganic molecular entitymetabolite
n-alpha-benzoyl-n5-(2-chloro-1-iminoethyl)-l-ornithine amidebenzenes
psb603PSB603: an adenosine A2B receptor antagonist
nitd 609NITD 609: an antimalarial and coccidiostat; structure in first source
an2728crisaborole : A member of the class of benzoxaboroles that is 5-hydroxy-1,3-dihydro-2,1-benzoxaborole in which the phenolic hydrogen has been replaced by a 4-cyanophenyl group. A phosphodiesterase 4 inhibitor that is used for treatment of mild to moderate atopic dermatitis in children and adults.

crisaborole: NSAID, Dermatologic Agent; structure in first source
aromatic ether;
benzoxaborole;
nitrile
antipsoriatic;
non-steroidal anti-inflammatory drug;
phosphodiesterase IV inhibitor
mk-3102pyrrolopyrazole
bms-911543N,N-dicyclopropyl-4-((1,5-dimethyl-1H-pyrazol-3-yl)amino)-6-ethyl-1-methyl-1,6-dihydroimidazo(4,5-d)pyrrolo(2,3b)pyridine-7-carboxamide: has antineoplastic activity; structure in first source
gsk1210151aGSK1210151A: inhibitor of the BET family of proteins; structure in first sourceimidazoquinoline
n-dodecyl-l-lysine amide
raltegravir1,2,4-oxadiazole;
dicarboxylic acid amide;
hydroxypyrimidine;
monofluorobenzenes;
pyrimidone;
secondary carboxamide
antiviral drug;
HIV-1 integrase inhibitor
mk-8825
saxitoxinsaxitoxin : An alkaloid isolated from the marine dinoflagellates and cyanobacteria that causes paralytic shellfish poisoning.

Saxitoxin: A compound that contains a reduced purine ring system but is not biosynthetically related to the purine alkaloids. It is a poison found in certain edible mollusks at certain times; elaborated by GONYAULAX and consumed by mollusks, fishes, etc. without ill effects. It is neurotoxic and causes RESPIRATORY PARALYSIS and other effects in MAMMALS, known as paralytic SHELLFISH poisoning.
alkaloid;
carbamate ester;
guanidines;
ketone hydrate;
paralytic shellfish toxin;
pyrrolopurine
cyanotoxin;
marine metabolite;
neurotoxin;
sodium channel blocker;
toxin
d159687
gs-4589676-(4-(trifluoromethoxy)phenyl)-3-(trifluoromethyl)(1,2,4)triazolo(4,3-a)pyridine: an anti-arrhythmia agent that inhibits late sodium current; structure in first source
trv130
chf6001tanimilast: a phosphodiesterase-4 inhibitor; structure in first source
ajmaline
sildenafilsildenafil : A pyrazolo[4,3-d]pyrimidin-7-one having a methyl substituent at the 1-position, a propyl substituent at the 3-position and a 2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfonyl]phenyl group at the 5-position.piperazines;
pyrazolopyrimidine;
sulfonamide
EC 3.1.4.35 (3',5'-cyclic-GMP phosphodiesterase) inhibitor;
vasodilator agent
zaprinastzaprinast: anaphylaxis inhibitor; structuretriazolopyrimidines
vardenafilvardenafil : The sulfonamide resulting from formal condensation of the sulfo group of 4-ethoxy-3-(5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one-2-yl)benzenesulfonic acid and the secondary amino group of 4-ethylpiperazine.imidazotriazine;
N-alkylpiperazine;
N-sulfonylpiperazine
EC 3.1.4.* (phosphoric diester hydrolase) inhibitor;
vasodilator agent
Imidazosagatriazinonepyrazolopyrimidine
pelrinonepelrinone: structure given in first source
psb 11
lixazinonelixazinone: structure given in first source
amg531
n-benzo(1,3)dioxol-5-yl-2-(5-(2,6-dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1h-purin-8-yl)-1-methyl-1h-pyrazol-3-yloxy)-acetamide
luf 58342-amino-4-(4-hydroxyphenyl)-6-(1H-imidazol-2-ylmethylsulfanyl)pyridine-3,5-dicarbonitrile: structure in first source
thiamet g