An acetal in the molecule of which the acetal carbon and one or both oxygen atoms thereon are members of a ring.
| Member | Definition | Role |
|---|
| allocryptopine | | allocryptopine |
| aprepitant | A morpholine-based antiemetic, which is or the prevention of acute and delayed nausea and vomiting associated with initial and repeat courses of highly emetogenic cancer chemotherapy. Aprepitant is a selective high-affinity antagonist of human substance P/neurokinin 1 (NK1) receptors. | aprepitant |
| 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 |
| artemether | An artemisinin derivative that is artemisinin in which the lactone has been converted to the corresponding lactol methyl ether. It is used in combination with lumefantrine as an antimalarial for the treatment of multi-drug resistant strains of falciparum malaria. | artemether |
| artesunate | An artemisinin derivative that is the hemisuccinate ester of the lactol resulting from the reduction of the lactone carbonyl group of artemisinin. It is used, generally as the sodium salt, for the treatment of malaria. | artesunate |
| avilamycin a | An oligosaccharide derivative that is produced by Streptomyces viridochromogenes and exhibits antibiotic properties. | avilamycin A |
| bielschowskysin | A diterpenoid that is isolated from Pseudopterogorgia kallos and exhibits antimalarial and anticancer activity. | bielschowskysin |
| carlactone | A gamma-lactone that is furan-2(5H)-one which is substituted by a methyl group at position 3 and by a [(1Z,3E)-2-methyl-4-(2,6,6-trimethylcyclohex-1-en-1-yl)buta-1,3-dien-1-yl]oxy group at position 5. | carlactone |
| cephalotaxine | A benzazepine alkaloid isolated from Cephalotaxus harringtonia. | cephalotaxine |
| corynoline | A benzophenanthridine alkaloid that is chelidonine substituted by a methyl group at position 13. Isolated from the aerial parts of Corydalis incisa, it acts as an acetylcholinesterase inhibitor and also exhibits antineoplastic and hepatoprotective activity. | corynoline |
| cubebin | A lignan that consists of tetrahydrofuran-2-ol substituted by two 1,3-benzodioxol-5-ylmethyl groups at positions 3 and 4 respectively (the 2S,3R,4R stereoisomer). It is isolated from the leaves of Piper nigrum and exhibits analgesic, anti-inflammatory, antimicrobial and trypanocidal activities. | (-)-cubebin |
| deltaline | | deltaline |
| everolimus | A macrocyclic lactone that is rapamycin in which the hydroxy group attached to the cyclohexyl moiety has been converted into the corresponding 2-hydroxyethyl ether. It is an immunosuppressant and antineoplastic agent. | everolimus |
| formal glycol | A cyclic acetal that is pentane in which the carbon atoms at positions 1 and 3 are replaced by oxygen atoms respectively. | 1,3-dioxolane |
| fosaprepitant | A morpholine derivative that is the (1R)-1-[3,5-bis(trifluoromethyl)phenyl]ethyl ether of (3-{[(2R,3S)-3-(4-fluorophenyl)-2-hydroxymorpholin-4-yl]methyl}-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl)phosphonic acid. | fosaprepitant |
| LSM-1290 | | LSM-1290 |
| noscapine | A benzylisoquinoline alkaloid that is 1,2,3,4-tetrahydroisoquinoline which is substituted by a 4,5-dimethoxy-3-oxo-1,3-dihydro-2-benzofuran-1-yl group at position 1, a methylenedioxy group at positions 6-7 and a methoxy group at position 8. Obtained from plants of the Papaveraceae family, it lacks significant painkilling properties and is primarily used for its antitussive (cough-suppressing) effects. | (-)-noscapine |
| oxypaeoniflora | A monoterpene glycoside with formula C23H28O12, isolated from several species of Paeoniae. | oxypaeoniflorin |
| paeoniflorigenone | A terpenoid with formula C17H18O6, isolated from several species of Paeoniae. | paeoniflorigenone |
| pulmicort | A glucocorticoid steroid having a highly oxygenated pregna-1,4-diene structure. It is used mainly in the treatment of asthma and non-infectious rhinitis and for treatment and prevention of nasal polyposis. | budesonide |
| schizandrin b | An organic heterotetracyclic compound that is found in Fructus Schisandrae and Schisandra chinensis. | (+)-schisandrin B; Deoxygomisin A |
| sirolimus | A macrolide lactam isolated from Streptomyces hygroscopicus consisting of a 29-membered ring containing 4 trans double bonds, three of which are conjugated. It is an antibiotic, immunosupressive and antineoplastic agent. | sirolimus |
| spectinomycin | A pyranobenzodioxin and antibiotic that is active against gram-negative bacteria and used (as its dihydrochloride pentahydrate) to treat gonorrhea. It is produced by the bacterium Streptomyces spectabilis. | spectinomycin |
| 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 |
| teniposide | A furonaphthodioxole that is a synthetic derivative of podophyllotoxin with anti-tumour activity; causes single- and double-stranded breaks in DNA and DNA-protein cross-links and prevents repair by topoisomerase II binding. | teniposide |
| versicolorin a | An organic heteropentacyclic compound that is 3a,12a-dihydroanthra[2,3-b]furo[3,2-d]furan-5,10-dione carrying three hydroxy substituents at positions 4, 6 and 8. | versicolorin A |
| versicolorin c | An organic heteropentacyclic compound that is 2,3,3a,12a-tetrahydroanthra[2,3-b]furo[3,2-d]furan-5,10-dione carrying three hydroxy substituents at positions 4, 6 and 8. | versicolorin B |