(2S,E)-1-tert-butyl 2-methyl 4-hydroxy-4-methyl-3-(3-phenylpropylidene)pyrrolidine-1,2-dicarboxylate 在
三乙基硅烷 、 palladium on activated charcoal 作用下,
以
甲醇 为溶剂,
以50%的产率得到(S)-1-tert-butyl 2-methyl 4-methyl-3-(3-phenylpropyl)-1H-pyrrole-1,2(2H,5H)-dicarboxylate