HRID1196345

反应详情

EQUATION

反应方程式

HRID 1196345 的结构方程式

PROCEDURE

实验过程

The procedure of Example 12 was repeated except that 44.6 mg (0.1 mmole) of 20-(1,3-dioxolan-2-yl)-1α,2 -epoxy-7α-hydroxypregn-5-en-3β-yl acetate was used in lieu of 49.0 mg of 20-(5,5-dimethyl-1,3-dioxan-2-yl)-1α,2α-epoxy-7α-hydroxypregn-5-en-3β-yl acetate to give 37.8 mg of 20-(1,3-dioxolan-2-yl)-1α,2α-epoxy-7α-methoxycarbonyloxypregn-5-en-3β-yl acetate (yield: 75%)