A corticoid synthesis from 9α-hydroxyandrost-4-ene-3,17-dione via a steroidal allene
作者:David R. Andrews、Robert A. Giusto、Anantha R. Sudhakar
DOI:10.1016/0040-4039(96)00583-7
日期:1996.5
An alternative synthesis of 17α, 21-dihydroxy-16β-methylpregna-4,9(11)-diene-3,20-dione, an intermediate to the potent anti-inflammatory corticoid, Betamethasone, is described. The key reactions are the bis epoxidation of a C-17,20 allene and the regiospecific elimination of a 9α-methyl carbonate.
描述了一种强力消炎皮质类固醇倍他米松的中间体17α,21-二羟基-16β-甲基孕烯-4,9(11)-二烯-3,20-二酮的替代合成方法。关键反应是C-17,20丙二烯的双环氧化和9α-甲基碳酸酯的区域特异性消除。