(1S,3R,3aS,6aR)-3-[(R)-((2R,3R)-1-Allyl-3-methoxy-4-oxo-azetidin-2-yl)-(tert-butyl-dimethyl-silanyloxy)-methyl]-1-methyl-4,6-dioxo-5-phenyl-octahydro-pyrrolo[3,4-c]pyrrole-1-carboxylic acid methyl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以43%的产率得到(3aR,4S,7R,8R,9S,9aR,9bS)-8-Allylamino-9-(tert-butyl-dimethyl-silanyloxy)-7-methoxy-4-methyl-1,3,6-trioxo-2-phenyl-decahydro-pyrrolo[3,4-a]indolizine-4-carboxylic acid methyl ester