2-cyano-2-[(8S,10R,13S,14S,17R)-17-hydroxy-10,13-dimethyl-3-oxo-2,3,6,7,8,10,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]ethyl acetate -Drug Synthesis Database

【结构式】

【分子编号】56616

【品名】2-cyano-2-[(8S,10R,13S,14S,17R)-17-hydroxy-10,13-dimethyl-3-oxo-2,3,6,7,8,10,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]ethyl acetate

【CA登记号】

【分子式】C₂₄H₃₁NO₄

【分子量】397.51448

【元素组成】C 72.52% H 7.86% N 3.52% O 16.1%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号：(XXVII)

Condensation of 3-methoxyandrosta-3,5,9(11)-trien-17-one (XI) with 3-hydroxypropionitrile (XXV) by means of LDA in THF provides 17a-(1-cyano-2- hydroxyethyl)-17b-hydroxyandrosta-4,9(11)-dien-3-one (XXVI), which is selectively monoacetylated by means of Ac2O in pyridine to yield monoacetate (XXVII). Dehydration of (XXVII) by means of SOCl2 in pyridine gives 20-cyano-21-acetoxypregna-4,9(11),17(20)-trien-3-one (XXVIII), which is treated with ethylene glycol, trimethyl orthoformate and TsOH in dichloromethane to afford the ethylene ketal (XXIX). Finally, compound (XXIX) is oxidized with KMnO4 in acetone/ethylene glycol and treated with NaHSO3 and HCOOH.

参考文献中间体

合成目标

【1】 Castaner, J.; Sorbera, L.A.; Leeson, P.A.; Bayes, M.; Anecortave Acetate. Drugs Fut 2002, 27, 11, 1039.
【2】 Walker, J.A. (Pharmacia Corp.); Corticosteroids from 17-keto steroids via 20-cyano-DELTA17(20)-pregnanes. US 4600538 .

中间体序号	中间体编号	品名	CAS号	分子式	供应商	用于合成
	11295	Polyethylene glycol;1,2-Ethanediol;Monoethylene glycol; Ethylene glycol	107-21-1	C₂H₆O₂	详情	详情
(XI)	18040	(8S,10R,13S,14S)-3-methoxy-10,13-dimethyl-1,2,7,8,10,12,13,14,15,16-decahydro-17H-cyclopenta[a]phenanthren-17-one		C₂₀H₂₆O₂	详情	详情
(XXV)	14029	Ethylene cyanohydrin; ECN; 3-Hydroxypropanenitrile	109-78-4	C₃H₅NO	详情	详情
(XXVI)	56615	3-hydroxy-2-[(8S,10R,13S,14S,17R)-17-hydroxy-10,13-dimethyl-3-oxo-2,3,6,7,8,10,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]propanenitrile		C₂₂H₂₉NO₃	详情	详情
(XXVII)	56616	2-cyano-2-[(8S,10R,13S,14S,17R)-17-hydroxy-10,13-dimethyl-3-oxo-2,3,6,7,8,10,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]ethyl acetate		C₂₄H₃₁NO₄	详情	详情
(XXVIII)	56617	2-cyano-2-[(8S,10R,13S,14S)-10,13-dimethyl-3-oxo-1,2,3,6,7,8,10,12,13,14,15,16-dodecahydro-17H-cyclopenta[a]phenanthren-17-ylidene]ethyl acetate		C₂₄H₂₉NO₃	详情	详情
(XXIX)	56618			C₂₆H₃₃NO₄	详情	详情

Extended Information