| Member | Definition | Role |
|---|
| 1-azakenpaullone | An organic heterotetracyclic compound that is 7,12-dihydropyrido[3',2':2,3]azepino[4,5-b]indole substituted at positions 6 and 9 by oxo and bromo groups respectively. | 1-azakenpaullone |
| 2-tert-butyl-9-fluoro-3,6-dihydro-7h-benz(h)imidazo(4,5-f)isoquinoline-7-one | An organic heterotetracyclic compound that is 1,6-dihydrobenzo[h]imidazo[4,5-f]isoquinolin-7-one bearing additional tert-butyl and fluoro substituents at positions 2 and 9 respectively. | 2-tert-butyl-9-fluoro-1,6-dihydrobenzo[h]imidazo[4,5-f]isoquinolin-7-one |
| 3-[(6aR,9R,10aR)-7-methyl-6,6a,8,9,10,10a-hexahydro-4H-indolo[4,3-fg]quinoline-9-yl]-1,1-diethylurea | | 3-[(6aR,9R,10aR)-7-methyl-6,6a,8,9,10,10a-hexahydro-4H-indolo[4,3-fg]quinoline-9-yl]-1,1-diethylurea |
| 4'-demethylepipodophyllotoxin | An organic heterotetracyclic compound that is the 9- epimer of 4'-demethylpodophyllotoxin. | 4'-demethylepipodophyllotoxin |
| 4'-demethylpodophyllotoxin | An organic heterotetracyclic compound that is podophyllotoxin in which the methyl ether group at position 4 of the trimethoxyphenyl group has been cleaved to afford the corresponding phenol. | 4'-demethylpodophyllotoxin |
| 5-methoxycanthin-6-one | | 5-Methoxycanthin-6-one |
| 5,6-didehydrosparteine | A quinolizidine alkaloid obtained by formal dehydrogenation at the 5,6-position of sparteine. It is a metabolite of sparteine found in human urine and plasma. | 5,6-didehydrosparteine |
| 6-methyl-12-indolo[1,2-c]quinazolinamine | | 6-methyl-12-indolo[1,2-c]quinazolinamine |
| 8,5'-cyclo-2'-deoxyadenosine | An organic heterotetracyclic compound obtained by intramolecular formation of a C-C bond between positions 8 and 5' of 2'-deoxyadenosine. | 8,5'-cyclo-2'-deoxyadenosine |
| 8,5'-cyclo-2'-deoxyguanosine | An organic heterotetracyclic compound obtained by intramolecular formation of a C-C bond between positions 8 and 5' of 2'-deoxyguanosine. | 8,5'-cyclo-2'-deoxyguanosine |
| 9-hydroxyellipticine | A organic heterotetracyclic compound that is ellipticine in which the hydrogen at position 9 has been replaced by a hydroxy group. | 9-hydroxyellipticine |
| 9-methoxycanthin-6-one | An indole alkaloid that is the 9-methoxy derivative of canthin-6-one. Isolated from Eurycoma longifolia and Simaba multiflora, it exhibits cytotoxic activity towards human cancer cell lines. | 9-methoxycanthin-6-one |
| afidopyropen | An organic heterotetracyclic compound that is 1,3,4,4a,5,6,6a,12,12a,12b-decahydro-2H,11H-benzo[f]pyrano[4,3-b]chromen-11-one which is substituted by methyl groups at positions 4, 6a, and 12b; hydroxy groups at positions 3, 6, and 9; and a cyclopropycarbonyloxymethyl group and a cyclopropylcarbonyloxy group at positions 17 and 18 respectively, and a pyridin-3-yl group at position 14 (the (3S,4R,4aR,6S,6aS,12R,12aS,12bS stereoisomer). It is an insecticide that is effective against sucking insects on fruit, vegetables and nuts. | afidopyropen |
| alectinib | An organic heterotetracyclic compound that is 6,6-dimethyl-5,6-dihydro-11H-benzo[b]carbazol-11-one carrying additional cyano, 4-(morpholin-4-yl)piperidin-1-yl and ethyl substituents at positions 3, 8 and 9 respectively. Used (as the hydrochloride salt) for the treatment of patients with anaplastic lymphoma kinase-positive, metastatic non-small cell lung cancer. | alectinib |
| allocryptopine | | allocryptopine |
| alpha-peltatin | An organic heterotetracyclic compound that is 4'-demethylpodophyllotoxin which is substituted by a hydroxy group at position 10 but which is lacking the hydroxy group at position 9. It is found as a glucoside in the rhizomes of Podophyllum peltatum. | alpha-peltatin |
| alsterpaullone | An organic heterotetracyclic compound that is 1,3-dihydro-2H-1-benzazepin-2-one which shares its 4-5 bond with the 3-2 bond of 5-nitro-1H-indole. | alsterpaullone |
| Amalorin | | Amalorin |
| arglabin | An organic heterotetracyclic compound and guaianolide sesquiterpene lactone that is acrylic acid which is substituted at position 2 by a 4-hydroxy-3,8-dimethyl-1,3a,4,5,6,7-hexahydroazulen-5-yl group in which the double bond in the 7-membered ring has been epoxidised and in which the hydroxy group and the carboxy group have undergone formal condensation to give the corresponding gamma-lactone. It is found in Artemisia glabella. Arglabin-DMA HCl, the hydrochloride salt of the adduct resulting from the conjugate addition of dimethylamine to the ene-lactone moiety, has been successfully used in Khazakhstan for the treatment of breast, colon, ovarian and lung cancers. | arglabin |
| aristolochic acid c | An aristolochic acid that is phenanthrene-1-carboxylic acid substituted by a methylenedioxy group at the 3,4 positions, by an hydroxy group at position 6, and by a nitro group at position 10. | aristolochic acid C |
| aristolochic acid D | An aristolochic acid that is phenanthrene-1-carboxylic acid substituted by a methylenedioxy group at the 3,4 positions, by an hydroxy group at position 6, by a methoxy group at position 8, and by a nitro group at position 10. | aristolochic acid D |
| aristolochic acid i | An aristolochic acid that is phenanthrene-1-carboxylic acid that is substituted by a methylenedioxy group at the 3,4 positions, by a methoxy group at position 8, and by a nitro group at position 10. It is the most abundant of the aristolochic acids and is found in almost all Aristolochia (birthworts or pipevines) species. It has been tried in a number of treatments for inflammatory disorders, mainly in Chinese and folk medicine. However, there is concern over their use as aristolochic acid is both carcinogenic and nephrotoxic. | aristolochic acid A |
| aristolochic acid ii | An aristolochic acid that is phenanthrene-1-carboxylic acid substituted by a methylenedioxy group at the 3,4 positions and by a nitro group at position 10. | aristolochic acid B |
| arisugacin | An organic heterotetracyclic compound that is 4a,12a-dihydroxy-4,4,6a,12b-tetramethyl-4a,6,6a,12,12a,12b-hexahydro-4H,11H-benzo[f]pyrano[4,3-b]chromene-1,11(5H)-dione substituted by 3,4-dimethoxyphenyl group at position 9 (the 4aR,6aR,12aS,12bS steroisomer). Isolated from the culture broth of Penicillium, it acts as a selective inhibitor of acetylcholinesterase. | arisugacin A |
| asperlicin c | A member of the class of asperlicins in which the core 6,7-dihydroquinazolino[3,2-a][1,4]benzodiazepine-5,13-dione skeleton is substituted at the 7 pro-S position by an indol-3-ylmethyl group. It is a cholecystokinin antagonist. | asperlicin C |
| aspirochlorine | | Aspirochlorine |
| atogepant | A secondary carboxamide resulting from the formal condensation of the carboxy group of (3'S)-2'-oxo-1',2',5,7-tetrahydrospiro[cyclopenta[b]pyridine-6,3'-pyrrolo[2,3-b]pyridine]-3-carboxylic acid with the amino group of (3S,5S,6R)-3-amino-6-methyl-1-(2,2,2-trifluoroethyl)-5-(2,3,6-trifluorophenyl)piperidin-2-one. It is a selective oral, small-molecule antagonist of calcitonin gene-related peptide (CGRP) receptor that has been approved for the treatment of migraine. | atogepant |
| azadirachtin | A member of the family of azadirachtins that is isolated from the neem tree (Azadirachta indica). | azadirachtin A |
| berbine | | berbine |
| berkeleydione | A meroterpenoid found in Penicillium rubrum. It has been shown to exhibit inhibitory activity against caspase-1. | berkeleydione |
| beta-erythroidine | An organic heterotetracyclic indole alkaloid isolated from the seeds and other parts of Erythrina species. It differs from the alpha isomer in having the double bond of the dihydropyranone ring located beta,gamma- to the lactone carbonyl group instead of alpha,beta-. | beta-erythroidine |
| beta-peltatin | An organic heterotetracyclic compound that is alpha-peltatin in which the phenolic hydroxy group of the 4-hydroxy-3,5-dimethoxyphenyl substitutent had been converted into the corresponding methyl ether. | beta-peltatin |
| bictegravir | A monocarboxylic acid amide obtained by formal condensation of the carboxy group of (2R,5S,13aR)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxylic acid with the amino group of 2,4,6-trifluorobenzylamine. It is a second-generation integrase strand transfer inhibitor (INSTI) and used (as its sodium salt) for the treatment of HIV-1. | bictegravir |
| brazilin | A organic heterotetracyclic compound that is a red pigment obtained from the wood of Caesalpinia echinata (Brazil-wood) or Caesalpinia sappan (sappan-wood). | brazilin |
| bryostatin 1 | A member of the class of bryostatins that is (17E)-2-oxooxacyclohexacos-17-ene which is substituted by hydroxy groups at positions 4, 10, and 20; an acetoxy group at position 8; methyl groups at positions 9, 9, 18, and 19; 2-methoxy-2-oxoethylidene groups at positions 14 and 24; an (E,E)-octa-2,4-dienoyloxy group at position 21; and with oxygen bridges linking positions 6 to 10, 12 to 16, and 20 to 24. It is one of the most abundant member of the class of bryostatins. | bryostatin 1 |
| bryostatin 2 | A member of the class of bryostatins that is bryostatin 1 in which the acetoxy group has been replaced by a hydroxy group. | bryostatin 2 |
| calanolide a | An organic heterotetracyclic compound that is 11,12-dihydro-2H,6H,10H-dipyrano[2,3-f:2',3'-h]chromen-2-one substituted by a hydroxy group at position 12, methyl groups at positions 6, 6, 10 and 11 and a propyl group at position 4 (the 10R,11S,12S stereoisomer). Isolated from Calophyllum lanigerum var austrocoriaceum and Calophyllum brasiliense, it exhibits potent activity against HIV-1 reverse transcriptase. | (+)-calanolide A |
| canthin-6-one | An indole alkaloid that is 6H-indolo[3,2,1-de][1,5]naphthyridine substituted by an oxo group at position 6. | canthin-6-one |
| caribenol a | A terpene lactone that is 3,4,5,5a,6,7,7a,10,10a,10b-decahydro-2H-1-oxabenzo[cd]cyclopenta[h]azulen-2-one substituted by a hydroxy group at position 10b and methyl groups at positions 3, 6, 9 and 10a. It is isolated from the West Indian gorgonian octocoral Pseudopterogorgia elisabethae and exhibits antitubercular and antimalarial activity. | caribenol A |
| chaetominine | An organic heterotetracyclic compound that consists of 4,5,5a,9c-tetrahydro-3H-2a,9b-diazacyclopenta[jk]fluorene-1,3(2H)-dione substituted by a hydroxy group at position 5, a methyl group at position 2 and a 4-oxoquinazolin-3(4H)-yl group at position 4 (the 2S,4R,5aS,9cS stereoisomer). It is a cytotoxic alkaloid isolated from the endophytic fungus Chaetomium. | chaetominine |
| columbamine | | columbamine |
| corytuberine | An aporphine alkaloid that is aporphine which is substituted by hydroxy groups at positions 1 and 11, and by methoxy groups at positions 2 and 10 (the S enantiomer). | (S)-corytuberine |
| costatolide | An organic heterotetracyclic compound that is 11,12-dihydro-2H,6H,10H-dipyrano[2,3-f:2',3'-h]chromen-2-one substituted by a hydroxy group at position 12, methyl groups at positions 6, 6, 10 and 11 and a propyl group at position 4 (the 10S,11R,12S stereoisomer). Isolated from Calophyllum lanigerum var austrocoriaceum and Calophyllum brasiliense, it exhibits potent activity against HIV-1 reverse transcriptase. | (-)-calanolide B |
| cryptolepine | An organic heterotetracyclic compound that is 5H-indolo[3,2-b]quinoline in which the hydrogen at position N-5 is replaced by a methyl group. | cryptolepine |
| cx 5461 | An organic heterotetracyclic compound that is 5-oxo-5H-[1,3]benzothiazolo[3,2-a][1,8]naphthyridine-6-carboxylic acid substituted by a 4-methyl-1,4-diazepan-1-yl group at position 2 and in which the carboxy group at position 6 is substituted by a [(5-methylpyrazin-2-yl)methyl]nitrilo group. An inhibitor of ribosomal RNA (rRNA) synthesis which specifically inhibits RNA polymerase I-driven transcription of rRNA in several cancer cell lines. It is currently in phase I/II clinical trials for advanced hematologic malignancies and triple-negative breast cancer with BRCA1/2 mutation. | CX-5461 |
| dihydro-beta-erythroidine | An organic heterotetracyclic compound resulting from the partial hydrogenation of the 1,3-diene moiety of beta-erythroidine to give the corresponding 2-ene. | dihydro-beta-erythroidine |
| discretamine | A berberine alkaloid isolated from Corydalis saxicola. | (S)-scoulerine |
| drymaritin | An indole alkaloid that is canthin-6-one substituted by a methoxy group at position 4. Isolated from the whole plants of Drymaria diandra, it exhibits anti-HIV activity. | drymaritin |
| ellagic acid | An organic heterotetracyclic compound resulting from the formal dimerisation of gallic acid by oxidative aromatic coupling with intramolecular lactonisation of both carboxylic acid groups of the resulting biaryl. It is found in many fruits and vegetables, including raspberries, strawberries, cranberries, and pomegranates. | ellagic acid |
| ellipticine | A organic heterotetracyclic compound that is pyrido[4,3-b]carbazole carrying two methyl substituents at positions 5 and 11. | ellipticine |
| ergoline | An indole alkaloid whose structural skeleton is found in many naturally occurring and synthetic ergolines which are known to bind to neurotransmitter receptors, such as dopamine, noradrenaline and serotonin receptors and function as unselective agonists or antagonists at these receptors. | ergoline |
| ergonovine | A monocarboxylic acid amide that is lysergamide in which one of the hydrogens attached to the amide nitrogen is substituted by a 1-hydroxypropan-2-yl group (S-configuration). An ergot alkaloid that has a particularly powerful action on the uterus, its maleate (and formerly tartrate) salt is used in the active management of the third stage of labour, and to prevent or treat postpartum of postabortal haemorrhage caused by uterine atony: by maintaining uterine contraction and tone, blood vessels in the uterine wall are compressed and blood flow reduced. | ergometrine |
| erysodine | An erythrina alkaloid with formula C18H21NO3 isolated from several erythrina plant species. It is a competitive antagonist of nicotinic acetylcholine receptors and exhibits antiparasitic and insecticidal activities. | erysodine |
| etoposide | | etoposide |
| galantamine | A benzazepine alkaloid isolated from certain species of daffodils. | galanthamine |
| geissospermine | A indole alkaloid comprising two indole-derived polycyclic moieties joined by a cyclic ether linkage. | geissospermine |
| glaucine | An aporphine alkaloid that is (S)-1,2,9,10-tetrahydroxy-6-methyl-5,6,6a,7-tetrahydro-4H-dibenzo[de,g]quinoline in which the four phenolic hydrogens have been replaced by methyl groups. | (S)-glaucine |
| gliotoxin | A pyrazinoindole with a disulfide bridge spanning a dioxo-substituted pyrazine ring; mycotoxin produced by several species of fungi. | gliotoxin |
| hapalindole u | A hapalindole that is hapalindole H in which the octahydronaphthalene ring junction carbons both have S configuration instead of R. | hapalindole U |
| hematoxylin | An organic heterotetracyclic compound 7,11b-dihydroindeno[2,1-c]chromene carrying five hydroxy substituents at positions 3, 4, 6a, 9 and 10. The most important and most used dye in histology, histochemistry, histopathology and in cytology. | haematoxylin |
| HT-2 toxin | A trichothecene mycotoxin that is T-2 toxin in which the acetyloxy group at position 4S has been hydrolysed to the corresponding hydroxy group. It is the major metabolite of T-2 toxin. | HT-2 toxin |
| lergotrile | | lergotrile |
| liphagal | A meroterpenoid isolated from the marine sponge Aka coralliphaga and has been shown to exhibit inhibitory activity against phosphatidylinositol-3-OH kinase. | liphagal |
| lycojapodine a | An alkaloid isolated from the club moss Lycopodium japonicum and has been shown to exhibit acetylcholinesterase inhibitory and anti-HIV-1 activity. | lycojapodine A |
| lysergic acid diethylamide | An ergoline alkaloid arising from formal condensation of lysergic acid with diethylamine. | lysergic acid diethylamide |
| maytansine | An organic heterotetracyclic compound and 19-membered macrocyclic lactam antibiotic originally isolated from the Ethiopian shrub Maytenus serrata but also found in other Maytenus species. It exhibits cytotoxicity against many tumour cell lines. | maytansine |
| megestrol acetate | A sesquiterpene lactone with formula C15H20O8. It is a neurotoxic natural product found in plants of the family Illiciaceae. | anisatin |
| mk-8742 | A complex organic heterotetracyclic compound that is a hepatitis C virus nonstructural protein 5A inhibitor used in combination with grazoprevir (under the brand name Zepatier) for treatment of chronic HCV genotypes 1 or 4 infection in adults. | elbasvir |
| muconomycin a | A trichothecene antibiotic which incorporates a triester macrocyclic structure and an exocyclic methylene epoxide group. | verrucarin A |
| mycocyclosin | An organic heterotetracyclic compound obtained via intramolecular oxidative aromatic coupling of cyclo(L-tyrosyl-L-tyrosyl). | mycocyclosin |
| nicergoline | | Nicergoline |
| nile red | An organic heterotetracyclic compound that is 5H-benzo[a]phenoxazin-5-one substituted at position 9 by a diethylamino group. | nile red |
| ossamycin | A macrolide antibiotic that was originally isolated from the culture broths of Streptomyces hygroscopicus var. ossamyceticus. | ossamycin |
| palmatine | | palmatine |
| pd 146176 | An organic heterotetracyclic compound that is 1H-indole which is ortho-fused to a 2H-1-benzothiopyran group at positions 2-3. It is an inhibitor of 15-lipoxygenase that limits atherosclerotic lesion development in rabbits. | PD-146176 |
| pergolide | A diamine that is ergoline in which the beta-hydrogen at position 8 is replaced by a (methylthio)methyl group and the hydrogen attached to the piperidine nitrogen (position 6) is replaced by a propyl group. A dopamine D2 receptor agonist which also has D1 and D2 agonist properties, it is used as the mesylate salt in the management of Parkinson's disease, although it was withdrawn from the U.S. and Canadian markets in 2007 due to an increased risk of cardiac valve dysfunction. | pergolide |
| pf-06463922 | A cyclic ether that is 16,17-dihydro-2H-8,4-(metheno)pyrazolo[4,3-h][2,5,11]benzoxadiazacyclotetradecin-15(10H)-one substituted by methyl groups at positions 2 and 10R, and by cyano, amino and fluoro groups at positions 3, 7 and 12 respectively. It is a small molecule inhibitor of ALK and ROS1 kinase developed by Pfizer for the treatment of ALK-positive non-small cell lung cancer. | lorlatinib |
| picropodophyllin | An organic heterotetracyclic compound that has a furonaphthodioxole skeleton bearing 3,4,5-trimethoxyphenyl and hydroxy substituents. | picropodophyllotoxin |
| piperlactam s | An organic heterotetracyclic compound that is dibenzo[cd,f]indol-4(5H)-one carrying two methoxy substituents at positions 1 and 5 as well as a hydroxy substituent at position 2. | piperlactam S |
| podophyllotoxin | An organic heterotetracyclic compound that has a furonaphthodioxole skeleton bearing a 3,4,5-trimethoxyphenyl substituent. It is found in the roots and rhizomes of Podophyllum species and is used for the topical treatment of genital warts. | podophyllotoxin |
| pronuciferine | An isoquinoline alkaloid isolated from Berberis coletioides. | (+)-pronuciferine |
| psorospermin | An organic heterotetracyclic compound that is 1,2-dihydro-6H-furo[2,3-c]xanthene substituted by a hydroxy group at position 10, a methoxy group at position 5 nad a 2-methyloxiran-2-yl group at position 2. | psorospermin |
| px-866 | An organic heterotetracyclic compound that is obtained from wortmanin via aminolysis of its furan ring by diallyl amine. | PX-866 |
| pyripyropene a | A sesquiterpenoid that consists of (3S,4R,4aR,6S,6aS,12R,12aS,12bS)-4-(acetoxymethyl)-12-hydroxy-4,6a,12b-trimethyl-11-oxo-9-(pyridin-3-yl)-1,3,4,4a,5,6,6a,12,12a,12b-decahydro-2H,11H-benzo[f]pyrano[4,3-b]chromene-3,6-diol in which the hydrogens of the 3- and 6-hydroxy functions are substituted by acetyl groups. | pyripyropene A |
| quinacridone | | Quinacridone |
| racemethorphan | An organic heterotetracyclic compound that is 1,3,4,9,10,10a-hexahydro-2H-10,4a-(epiminoethano)phenanthrene which is substituted by a methoxy group at position 6 and a methyl group at position 11. | 6-methoxy-11-methyl-1,3,4,9,10,10a-hexahydro-2H-10,4a-(epiminoethano)phenanthrene |
| rifamycin b | | rifamycin B |
| rifamycin sv | A member of the class of rifamycins that exhibits antibiotic and antitubercular properties. | rifamycin SV |
| sampangine | A copyrine alkaloid with formula C15H8N2O, extracted from several plants including the stem bark of Cananga odorata. It is a heme biosynthesis inhibitor and exhibits antifungal and anticancer properties. | sampangine |
| sb-224289 | A member of the class of benzamides obtained by formal condensation of the carboxy group of 2'-methyl-4'-(5-methyl-1,2,4-oxadiazol-3-yl)biphenyl-4-carboxylic acid with the secondary amino group of 1'-methyl-6,7-dihydro-5H-spiro[furo[2,3-f]indole-3,4'-piperidine]. Selective 5-HT1B receptor antagonist (pKi = 8.2). Displays >60-fold selectivity over 5-HT1D, 5-HT1A, 5-HT1E, 5-HT1F, 5-HT2A and 5-HT2C receptors in radioligand binding and functional assays. Centrally active following oral administration in vivo. | SB 224289 |
| schizandrin b | An organic heterotetracyclic compound that is found in Fructus Schisandrae and Schisandra chinensis. | (+)-schisandrin B; Deoxygomisin A |
| stemmadenine | A monoterpenoid indole alkaloid with formula C21H26N2O3, isolated from several plant species including Rhazya stricta, Tabernaemontana dichotoma and Aspidosperma pyricollum. | 15alpha-stemmadenine |
| stephenanthrine | An organic heterotetracyclic compound that is 2-(2H-phenanthro[3,4-d][1,3]dioxole in which the hydrogen at position 5 has been replaced by a 2-(dimethylamino)ethyl group. | stephanthrine |
| t-2 toxin | A trichothecene mycotoxin produced by fungi of the genus Fusarium. It is a common contaminant in food and feedstuffs of cereal origin and is known to cause a range of toxic effects in humans and animals. | T-2 toxin |
| tetrahydrocolumbamine | A berberine alkaloid consisting of columbamine having four extra hydrogens at positions 5, 8, 13 and 13a and (S)-configuration. | (S)-tetrahydrocolumbamine |
| tetrahydropalmatine | A berberine alkaloid obtained by formal addition of two molecules of hydrogen to the pyridine ring of palmatine. | tetrahydropalmatine |
| top 53 | A furonaphthodioxole that is 4'-demethyldeoxypodophyllotoxin which is substituted at position 4 of the C-ring by a 2-{[2-(dimethylamino)ethyl](methyl)amino}ethyl group. While structurally related to etoposide, TOP-53 is significantly more toxic to non-small cell lung cancer cells, more active at generating chromosomal breaks, and displays improved cellular uptake and pharmacokinetics in animal lung tissues. | TOP-53 |
| tryptanthrine | | Tryptanthrine |
| vincaleukoblastine | | vincaleukoblastine |
| vincristine | A vinca alkaloid with formula C46H56N4O10 found in the Madagascar periwinkle, Catharanthus roseus. It is used (commonly as the corresponding sulfate salt)as a chemotherapy drug for the treatment of leukaemia, lymphoma, myeloma, breast cancer and head and neck cancer. | vincristine |
| vindesine | | vindesine |
| vinflunine | An organic heteropentacyclic compound and an organic heterotetracyclic compound that is vinorelbine in which the tetrahydropyridine moiety of the heterotetracyclic part of the molecule has been redced to the corresponding piperidine, and in which the ethyl group attached to this ring has been replaced by a 1,1-difluoroethyl group. | vinflunine |
| vinorelbine | A vinca alkaloid with a norvinblastine skeleton. | vinorelbine |
| xenovulene a | A sesquiterpenoid based on a humulene skeleton. It is isolated from Sarocladium strictum and has been shown to exhibit inhibitory activity against GABA receptor. | xenovulene A |