3α-Acetyl-4β,7α-diacetoxy-5aα,5bβ,8,8,11aβ,13bα-hexamethyl-3aβ,7aα,11bα,13aβ-perhydro-cyclopentachrysen 在
乙酸酐 作用下,
以
溶剂黄146 为溶剂,
生成 Acetic acid (3R,3aS,4S,5aR,5bR,7S,7aS,11aR,11bR,13aR,13bR)-4-acetoxy-3-acetyl-5a,5b,8,8,11a,13b-hexamethyl-icosahydro-cyclopenta[a]chrysen-7-yl ester