(4aS,6aR,6bS,8aR,12aS)-N'-acetyl-11-cyano-2,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-1,3,4,5,6,7,8,8a,14a,14b-decahydropicene-4a-carbohydrazide 在
对甲苯磺酸 作用下,
以
甲苯 为溶剂,
反应 1.5h,
以74%的产率得到(4aR,6aS,6bR,8aS,14bS)-4,4,6a,6b,11,11,14b-heptamethyl-8a-(5-methyl-1,3,4-oxadiazol-2-yl)-3,13-dioxo-4a,5,6,6a,7,8,9,10,12,12a-decahydropicene-2-carbonitrile