3β-acetoxy-6,7-dehydro-13α-devinyl-13α-<β-(methoxycarbonyl)ethyl>sandaracopimaradiene 在
氨 、
lithium 作用下,
以
四氢呋喃 为溶剂,
以60 mg的产率得到Acetic acid (3S,5R,9R,10R,13R,14S,15R)-15-hydroxy-4,4,10,13-tetramethyl-2,3,4,5,6,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester