| Substance | Relationship Strength | Studies | Trials | Classes | Roles |
|---|
agmatine
Agmatine: Decarboxylated arginine, isolated from several plant and animal sources, e.g., pollen, ergot, herring sperm, octopus muscle. | 2.4 | 2 | 0 | guanidines;
primary amino compound | Escherichia coli metabolite;
mouse metabolite |
cirazoline
cirazoline: posseses agonist properties at alpha-adrenoreceptor sites; RN given refers to parent cpd | 2.04 | 1 | 0 | aromatic ether | |
clonidine
Clonidine: An imidazoline sympatholytic agent that stimulates ALPHA-2 ADRENERGIC RECEPTORS and central IMIDAZOLINE RECEPTORS. It is commonly used in the management of HYPERTENSION.. clonidine (amino form) : A clonidine that is 4,5-dihydro-1H-imidazol-2-amine in which one of the amino hydrogens is replaced by a 2,6-dichlorophenyl group. | 3.25 | 6 | 0 | clonidine;
imidazoline | |
guanfacine
Guanfacine: A centrally acting antihypertensive agent with specificity towards ADRENERGIC ALPHA-2 RECEPTORS. | 2.04 | 1 | 0 | acetamides | |
guanidine
Guanidine: A strong organic base existing primarily as guanidium ions at physiological pH. It is found in the urine as a normal product of protein metabolism. It is also used in laboratory research as a protein denaturant. (From Martindale, the Extra Pharmacopoeia, 30th ed and Merck Index, 12th ed) It is also used in the treatment of myasthenia and as a fluorescent probe in HPLC.. guanidine : An aminocarboxamidine, the parent compound of the guanidines. | 2 | 1 | 0 | carboxamidine;
guanidines;
one-carbon compound | |
ifenprodil
ifenprodil: NMDA receptor antagonist | 2 | 1 | 0 | piperidines | |
nordefrin
Nordefrin: A norepinephrine derivative used as a vasoconstrictor agent. | 1.98 | 1 | 0 | catecholamine | |
naphazoline
Naphazoline: An adrenergic vasoconstrictor agent used as a decongestant. | 2.04 | 1 | 0 | naphthalenes | |
nifedipine
Nifedipine: A potent vasodilator agent with calcium antagonistic action. It is a useful anti-anginal agent that also lowers blood pressure. | 1.97 | 1 | 0 | C-nitro compound;
dihydropyridine;
methyl ester | calcium channel blocker;
human metabolite;
tocolytic agent;
vasodilator agent |
oxymetazoline
Oxymetazoline: A direct acting sympathomimetic used as a vasoconstrictor to relieve nasal congestion. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1251). oxymetazoline : A member of the class of phenols that is 2,4-dimethylphenol which is substituted at positions 3 and 6 by 4,5-dihydro-1H-imidazol-2-ylmethyl and tert-butyl groups, respectively. A direct-acting sympathomimetic with marked alpha-adrenergic activity, it is a vasoconstrictor that is used (generally as the hydrochloride salt) to relieve nasal congestion. | 2.41 | 2 | 0 | carboxamidine;
imidazolines;
phenols | alpha-adrenergic agonist;
nasal decongestant;
sympathomimetic agent;
vasoconstrictor agent |
4-iodoclonidine
4-iodoclonidine: structure given in first source | 2.48 | 2 | 0 | | |
phenoxybenzamine
Phenoxybenzamine: An alpha-adrenergic antagonist with long duration of action. It has been used to treat hypertension and as a peripheral vasodilator. | 2.38 | 2 | 0 | aromatic amine | |
moxonidine
moxonidine: structure given in first source | 2.93 | 4 | 0 | organohalogen compound;
pyrimidines | |
prazosin
Prazosin: A selective adrenergic alpha-1 antagonist used in the treatment of HEART FAILURE; HYPERTENSION; PHEOCHROMOCYTOMA; RAYNAUD DISEASE; PROSTATIC HYPERTROPHY; and URINARY RETENTION.. prazosin : A member of the class of piperazines that is piperazine substituted by a furan-2-ylcarbonyl group and a 4-amino-6,7-dimethoxyquinazolin-2-yl group at positions 1 and 4 respectively. | 1.97 | 1 | 0 | aromatic ether;
furans;
monocarboxylic acid amide;
piperazines;
quinazolines | alpha-adrenergic antagonist;
antihypertensive agent;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor |
talipexole
talipexole: dopamine receptor agonist; structure given in first source | 1.97 | 1 | 0 | azepine | |
tizanidine
tizanidine: RN given refers to parent cpd; structure. tizanidine : 2,1,3-Benzothiadiazole substituted at C-4 by a Delta(1)-imidazolin-2-ylamino group and at C-4 by a chloro group. It is an agonist at alpha2-adrenergic receptor sites. | 2.04 | 1 | 0 | benzothiadiazole;
imidazoles | alpha-adrenergic agonist;
muscle relaxant |
tolazoline
Tolazoline: A vasodilator that apparently has direct actions on blood vessels and also increases cardiac output. Tolazoline can interact to some degree with histamine, adrenergic, and cholinergic receptors, but the mechanisms of its therapeutic effects are not clear. It is used in treatment of persistent pulmonary hypertension of the newborn.. tolazoline : A member of the class of imidazoles that is 4,5-dihydro-1H-imidazole substituted by a benzyl group. | 2 | 1 | 0 | imidazoles | alpha-adrenergic antagonist;
antihypertensive agent;
vasodilator agent |
phentolamine
Phentolamine: A nonselective alpha-adrenergic antagonist. It is used in the treatment of hypertension and hypertensive emergencies, pheochromocytoma, vasospasm of RAYNAUD DISEASE and frostbite, clonidine withdrawal syndrome, impotence, and peripheral vascular disease.. phentolamine : A substituted aniline that is 3-aminophenol in which the hydrogens of the amino group are replaced by 4-methylphenyl and 4,5-dihydro-1H-imidazol-2-ylmethyl groups respectively. An alpha-adrenergic antagonist, it is used for the treatment of hypertension. | 2.4 | 2 | 0 | imidazoles;
phenols;
substituted aniline;
tertiary amino compound | alpha-adrenergic antagonist;
vasodilator agent |
phenylephrine
Phenylephrine: An alpha-1 adrenergic agonist used as a mydriatic, nasal decongestant, and cardiotonic agent.. phenylephrine : A member of the class of the class of phenylethanolamines that is (1R)-2-(methylamino)-1-phenylethan-1-ol carrying an additional hydroxy substituent at position 3 on the phenyl ring. | 1.96 | 1 | 0 | phenols;
phenylethanolamines;
secondary amino compound | alpha-adrenergic agonist;
cardiotonic drug;
mydriatic agent;
nasal decongestant;
protective agent;
sympathomimetic agent;
vasoconstrictor agent |
1,3-ditolylguanidine
1,3-ditolylguanidine: structure given in first source; a selective ligand for the sigma binding sites in the brain | 1.99 | 1 | 0 | toluenes | |
yohimbine
Yohimbine: A plant alkaloid with alpha-2-adrenergic blocking activity. Yohimbine has been used as a mydriatic and in the treatment of ERECTILE DYSFUNCTION.. yohimbine : An indole alkaloid with alpha2-adrenoceptor antagonist activity. It is produced by Corynanthe johimbe and Rauwolfia serpentina. | 3.08 | 5 | 0 | methyl 17-hydroxy-20xi-yohimban-16-carboxylate | alpha-adrenergic antagonist;
dopamine receptor D2 antagonist;
serotonergic antagonist |
lofexidine
lofexidine: reduces narcotic withdrawal symptoms; RN given refers to parent cpd without isomeric designation; structure in Negwer, 5th ed, #6247 | 2.13 | 1 | 0 | aromatic ether;
carboxamidine;
dichlorobenzene;
imidazoles | alpha-adrenergic agonist;
antihypertensive agent |
substance p
[no description available] | 2 | 1 | 0 | peptide | neurokinin-1 receptor agonist;
neurotransmitter;
vasodilator agent |
dobutamine
Dobutamine: A catecholamine derivative with specificity for BETA-1 ADRENERGIC RECEPTORS. It is commonly used as a cardiotonic agent after CARDIAC SURGERY and during DOBUTAMINE STRESS ECHOCARDIOGRAPHY.. dobutamine : A catecholamine that is 4-(3-aminobutyl)phenol in which one of the hydrogens attached to the nitrogen is substituted by a 2-(3,4-dihydroxyphenyl)ethyl group. A beta1-adrenergic receptor agonist that has cardiac stimulant action without evoking vasoconstriction or tachycardia, it is used as the hydrochloride to increase the contractility of the heart in the management of acute heart failure. | 1.97 | 1 | 0 | catecholamine;
secondary amine | beta-adrenergic agonist;
cardiotonic drug;
sympathomimetic agent |
idazoxan
Idazoxan: A benzodioxane-linked imidazole that has alpha-2 adrenoceptor antagonist activity.. idazoxan : A benzodioxine that is 2,3-dihydro-1,4-benzodioxine in which one of the hydrogens at position 2 has been replaced by a 4,5-dihydro-1H-imidazol-2-yl group. | 2.73 | 3 | 0 | benzodioxine;
imidazolines | alpha-adrenergic antagonist |
rilmenidine
Rilmenidine: Oxazole derivative that acts as an agonist for ALPHA-2 ADRENERGIC RECEPTORS and IMIDAZOLINE RECEPTORS. It is used in the treatment of HYPERTENSION. | 2.48 | 2 | 0 | isourea | |
atipamezole
[no description available] | 2.13 | 1 | 0 | | |
efaroxan
efaroxan: RN given refers to parent cpd | 2.48 | 2 | 0 | 1-benzofurans | |
gr 65630
GR 65630: serotonin receptor ligand. GR 65630 : A member of the class of methylindoles that is 1-methylindole substituted at position 3 by a 3-(4-methylimidazol-5-yl)propanoyl group. | 2 | 1 | 0 | | |
dexmedetomidine
[no description available] | 2.13 | 1 | 0 | medetomidine | alpha-adrenergic agonist;
analgesic;
non-narcotic analgesic;
sedative |
guanabenz
Guanabenz: An alpha-2 selective adrenergic agonist used as an antihypertensive agent. | 2.04 | 1 | 0 | dichlorobenzene | |
tracizoline
tracizoline: RN given for (R-(R*,R*))-2,3-dihydroxybutanedionate (1:1); ligand for imidazoline receptor; structure in first source | 2.13 | 1 | 0 | | |
2-(2-fluoro-5-methylphenyl)-4,5-dihydro-1h-imidazole
2-(2-fluoro-5-methylphenyl)-4,5-dihydro-1H-imidazole: structure in first source | 2.13 | 1 | 0 | | |
piperidines
Piperidines: A family of hexahydropyridines. | 2 | 1 | 0 | | |