HRID1708789

反应详情

EQUATION

反应方程式

HRID 1708789 的结构方程式

PROCEDURE

实验过程

The procedure of Example 24 was repeated except that 3.4 mg (0. 00887 mmole) of 1α,2α-epoxy-21,21-dimethoxy-20-methylpregna-5,7-dien-3β-ol was used in lieu of 3.8 mg of 20-(5,5-dimethyl-1,3-dioxan-2-yl)-1α,2α -epoxypregna-5,7-dien-3β-ol to give 2.6 mg of 21,21-dimethoxy-20-methylpregna-5,7-diene-1α,3β-diol (yield: ca. 75%).