| Member | Definition | Role |
|---|
| 2,3-dihydro-3beta-methoxy withaferin A | A withanolide that is 2,3-dihydrowithaferin A substituted by a beta-methoxy group at position 3. It has been isolated from the aerial parts of Physalis longifolia. | 2,3-dihydro-3beta-methoxy withaferin A |
| 2,3-dihydro-3beta-O-sulfate withaferin A | A withanolide that is 2,3-dihydrowithaferin A substituted by a sulfoxy group at position 3. Isolated from Physalis longifolia, it exhibits antineoplastic activity. | 2,3-dihydro-3beta-O-sulfate withaferin A |
| 2,3-dihydrowithaferin A | A withanolide that is the 2,3-dihydro derivative of withaferin A. It has been isolated from the aerial parts of Physalis longifolia. | 2,3-dihydrowithaferin A |
| 22,23-dihydroergosterol | A phytosterol consiting of ergostane having double bonds at the 5,6- and 7,8-positions as well as a 3beta-hydroxy group. | ergosta-5,7-dien-3beta-ol |
| 4alpha-methylergosta-8,24(28)-dien-3,7,11-trione-26-oic acid | A steroid acid that is ergosta-8,24(28)-dien-26-oic acid substituted by a methyl group at position 4 and oxo groups at positions 3, 7 and 11 (the 4alpha,5alpha stereoisomer). Isolated from Antrodia cinnamomea and Antrodia camphorata, it exhibits cytotoxic and anti-inflammatory activity. | zhankuic acid A |
| antcin a | | antcin A |
| brassicasterol | An 3beta-sterol that is (22E)-ergosta-5,22-diene substituted by a hydroxy group at position 3beta. It is a phytosterol found in marine algae, fish, and rapeseed oil. | brassicasterol |
| cerevisterol | An ergostanoid that is (22E)-ergosta-7,22-diene substituted by hydroxy groups at positions 3, 5 and 6 (the 3beta,5alpha,6beta stereoisomer). It has been isolated from the fungus, Xylaria species. | cerevisterol |
| dehydroergosterol | A phytosterol consiting of ergostane having double bonds at the 5,6-, 7,8- 9,11- and 22,23-positions as well as a 3beta-hydroxy group. | dehydroergosterol |
| ergosta-4,6,8(14),22-tetraen-3-one | An ergostanoid that is (22E)-ergosta-4,6,8(14),22-tetraene substituted by an oxo group at position 3. It has been isolated from the mycelia of Cordyceps sinensis. | ergosta-4,6,8(14),22-tetraen-3-one |
| ergosterol | A phytosterol consisting of ergostane having double bonds at the 5,6-, 7,8- and 22,23-positions as well as a 3beta-hydroxy group. | ergosterol |
| ergosterol-5,8-peroxide | An ergostanoid that is ergosta-6,22-dien-3-ol with a peroxy group between positions 5 and 8 (the 3beta,5alpha,8alpha,22E stereoisomer). Isolated from Ganoderma lucidum and Cordyceps sinensis, it exhibits antimycobacterial, trypanocidal and antineoplastic activities. | ergosterol peroxide |
| halistanol trisulfate | | Halistanol sulfate |
| tubocapsanolide a | A withanolide that is 5beta,6beta:16alpha,17alpha-diepoxywitha-2,24-dienolide substituted by a hydroxy group at position 4 and an oxo group at position 1. Isolated from Tubocapsicum anomalum, it exhibits cytotoxic activity. | tubocapsanolide A |
| withaferin a | A withanolide that is 5,6:22,26-diepoxyergosta-2,24-diene-1,26-dione substituted by hydroxy groups at positions 4 and 27 (the 4beta,5beta,6beta,22R stereoisomer). Isolated from Physalis longifolia, it exhibits cytotoxic activity. | withaferin A |
| withanolide d | A withanolide that is 5,6:22,26-diepoxyergosta-2,24-diene-1,26-dione substituted by hydroxy groups at positions 4 and 22 (the 4beta,5beta,6beta,22R stereoisomer). Isolated from Tubocapsicum anomalum and Withania somnifera, it exhibits cytotoxic activity. | withanolide D |