dimethyl (2RS,8aRS,10aRS)-10,12-dioxo-2,3,4,5,6,7,8,8a,9,10-decahydro-1H-2,10a-ethanophenanthrene-8,8-dicarboxylate 在
lithium thiopropiolate 作用下,
以
六甲基磷酰三胺 为溶剂,
反应 18.0h,
以78%的产率得到(2RS,8aRS,10aRS)-10,12-dioxo-2,3,4,5,6,7,8,8a,9,10-decahydro-1H-2,10a-ethanophenanthrene-8,8-dicarboxylic acid