在
palladium on activated charcoal
氢气 、 xylene 作用下,
以
甲醇 为溶剂,
反应 48.0h,
生成 tert-butyl (3S,6R,8aR)-6-[(2-methylpropan-2-yl)oxycarbonylamino]-5-oxospiro[2,3,6,7,8,8a-hexahydroindolizine-1,1'-cyclohexane]-3-carboxylate 、 tert-butyl (3S,6S,8aR)-6-[(2-methylpropan-2-yl)oxycarbonylamino]-5-oxospiro[2,3,6,7,8,8a-hexahydroindolizine-1,1'-cyclohexane]-3-carboxylate