Synthesis of (4-14C)-labeled and non-labeled 3β,15α-dihydroxy-5-pregnen-20-one and 3β,15α-dihydroxy-5-androsten-17-one
作者:Bhagu R. Bhavnani、Frank Z. Stanczyk
DOI:10.1016/0039-128x(72)90065-7
日期:1972.8
Abstract The synthesis of labeled and non-labeled 3β,15α-dihydroxy-5-pregnen-20-one (V) and 3β, 15α-dihydroxy-5-androsten-17-one (XI) is described. Treatment of 15α-hydroxy-4-pregnene-3,20-dione (I) with acetic anhydride and acetyl chloride gave 3,15α-diacetoxy-3,5-pregnadien-20-one (II). The enol acetate (II) was ketalized by a modification of the general procedure to yield 3,15α-diacetoxy-3,5-pregnadien-20-one
摘要 描述了标记和非标记 3β,15α-dihydroxy-5-pregnen-20-one (V) 和 3β, 15α-dihydroxy-5-androsten-17-one (XI) 的合成。用乙酸酐和乙酰氯处理 15α-羟基-4-孕烯-3,20-二酮 (I),得到 3,15α-二乙酰氧基-3,5-孕二烯-20-酮 (II)。烯醇乙酸酯 (II) 通过修改一般程序进行缩酮化,得到 3,15α-二乙酰氧基-3,5-孕二烯-20-酮环状亚乙基缩酮 (III),然后用 NaBH 4 和 LiAlH 4 还原得到3β, 15α-dihydroxy-5-pregnen-20-one 环状乙烯缩酮 (IV)。IV 的缩酮基团的裂解得到 V。类似地,XI 通过从 15α-羟基-4-雄烯-3,17-二酮 (VII) 开始制备。(4- 14 C)-3β,