title: [C21 steroidal constituents from Cynanchum hancockianum].
abstract: Two new compounds hancogenin B (V) and hancoside A (VI) and four known compounds glucogenin C (I), cynatratoside A (II), glaucogenin A (III) and anhydrohirundigenin (IV) were isolated from the roots of Cynanchum hancockianum (Maxim) Al. Iljinski. Their structures were identified on the basis of spectral evidence. The fragmentation ways of 13:14, 14:15-secopregnenes in EIMS were outlined and the antitumor activity of II and the antiendotoxic activity of VI were also preliminarily tested in vitro.
authors: Division of Natural Product Research Shenyang College of Pharmacy.
authors: H X
authors: HX
authors: Lou
authors: X
authors: X
authors: Li
authors: T R
authors: TR
authors: Zhu
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D001643:Bridged Bicyclo Compounds / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D006801:Humans; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D011284:Pregnenolone / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D012632:Secosteroids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D001643:Bridged Bicyclo Compounds; D004365:Drugs, Chinese Herbal; D009281:Naphthalenes; D012503:Saponins; D012632:Secosteroids; C078991:hancoside A; C078992:hancogenin B; D011284:Pregnenolone; C078993:cynatratoside A