(4R)-4-[(3R,5S,7R,8R,9S,10S,13R,14S,17R)-3,7-bis(acetyloxy)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoic acid -Drug Synthesis Database

【结构式】

【分子编号】53729

【品名】(4R)-4-[(3R,5S,7R,8R,9S,10S,13R,14S,17R)-3,7-bis(acetyloxy)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoic acid

【CA登记号】n/a

【分子式】C₂₈H₄₄O₆

【分子量】476.65376

【元素组成】C 70.56% H 9.3% O 20.14%

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：(XLV)

Preparation of the key intermediate (XIII) starting from chenodeoxycholic acid (XLIV) was also reported. Diacetylation of (XLIV), followed by selective hydrolysis of diacetate (XLV), gave the C-3 alcohol (XLVI). This was oxidized to dienone (XLVII) following a previously reported procedure. Reduction of (XLVII) by lithium in liquid ammonia yielded the saturated ketone (XLVIII). Protection of the 7-hydroxyl group of (XLVIII) using methoxymethyl chloride, followed by ketalization of the 3-ketone, afforded (XLIX). Side-chain elongation in (XLIX) as in Scheme 20248401a produced (L), which was then deprotected giving (XIII).

参考文献中间体

合成目标

【1】 Moriarty, R.M.; Guo, L.; Tuladhar, S.M. (Genaera Corp.); Chemical synthesis of squalamine. WO 9419366 .

中间体序号	中间体编号	品名	CAS号	分子式	供应商	用于合成
(IL)	53733		n/a	C₂₈H₄₆O₆	详情	详情
(VIII)	53699	(5S,7R,8R,9S,10S,13R,14S,17R)-17-((1R)-4-{[tert-butyl(dimethyl)silyl]oxy}-1,5-dimethylhexyl)-7-hydroxy-10,13-dimethylhexadecahydro-3H-cyclopenta[a]phenanthren-3-one	n/a	C₃₃H₆₀O₃Si	详情	详情
(XLIV)	53728	(4R)-4-[(3R,5S,7R,8R,9S,10S,13R,14S,17R)-3,7-dihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoic acid	n/a	C₂₄H₄₀O₄	详情	详情
(XLV)	53729	(4R)-4-[(3R,5S,7R,8R,9S,10S,13R,14S,17R)-3,7-bis(acetyloxy)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoic acid	n/a	C₂₈H₄₄O₆	详情	详情
(XLVI)	53730	(4R)-4-[(3R,5S,7R,8R,9S,10S,13R,14S,17R)-7-(acetyloxy)-3-hydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoic acid	n/a	C₂₆H₄₂O₅	详情	详情
(XLVII)	53731	(4R)-4-[(7R,8S,9S,10S,13R,14S,17R)-7-(acetyloxy)-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl]pentanoic acid	n/a	C₂₆H₃₆O₅	详情	详情
(XLVIII)	53732	(4R)-4-[(5S,7R,8R,9S,10S,13R,14S,17R)-7-hydroxy-10,13-dimethyl-3-oxohexadecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoic acid	n/a	C₂₄H₃₈O₄	详情	详情
(L)	53734		n/a	C₃₁H₅₄O₅	详情	详情

Extended Information