(3S,4aS,6aS,6bR,8aR,10S,12aR,12bR,14bS)-3,10-Diacetoxy-2,2,6a,6b,9,9,12a-heptamethyl-1,3,4,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14b-hexadecahydro-2H-picene-4a-carboxylic acid methyl ester 在
platinum(IV) oxide 氢气 、
溶剂黄146 作用下,
生成
3β,21β-Diacetoxy-olean-12-en-28-carbonsaeure-methylester