[(1Z,3aR,4S,4aR,8R,8aS,8bR)-8b-hydroxy-8-(hydroxymethyl)-2,2,4a-trimethyl-1-[2-(2-methyl-1,3-dioxolan-2-yl)ethylidene]-7-oxo-3a,4,8,8a-tetrahydro-3H-cyclopenta[a]inden-4-yl] acetate 在
4-二甲氨基吡啶 、 sodium tetrahydroborate 、 cerium(III) chloride 、
potassium carbonate 、
三乙胺 作用下,
以
甲醇 、
乙醇 、
二氯甲烷 为溶剂,
反应 9.84h,
生成 Acetic acid (3aR,3bS,4R,5S,7aR,8S,8aR)-3a,5-dihydroxy-4-hydroxymethyl-2,2,7a-trimethyl-3-[2-(2-methyl-[1,3]dioxolan-2-yl)-eth-(Z)-ylidene]-1,2,3,3a,3b,4,5,7a,8,8a-decahydro-cyclopenta[a]inden-8-yl ester