L-哌啶-2-甲酸 、
methyl 3-deoxy-1,2-O-isopropylidene-D-glyceropent-3-enofuranuronate 、 C
8H
5NO
2 以
甲苯 为溶剂,
反应 14.0h,
以80%的产率得到methyl (3aR,4aS,5R,10aS,10bR,10cR)-2,2-dimethyl-2'-oxo-1',2',3a,7,8,9,10,10a,10b,10c-decahydro-4aH-spiro[1,3-dioxolo[4,5]furo[3,2-a]indolizine-5,3'-indole]-4a-carboxylate