Benzoic acid 6-[(S)-((1R,4S,7R,8R,9S)-5-hydroxy-7-methoxy-10-methyl-2-oxo-6-oxa-3,10-diaza-tricyclo[6.2.1.0
4,9]undec-3-yl)-methoxycarbonyl-methyl]-2,4-dimethoxy-3-methyl-phenyl ester 在
四氯化碳 、
三(二甲胺基)膦 作用下,
以
二氯甲烷 为溶剂,
生成
Benzoic acid 6-[(S)-((1R,4S,5R,7R,8R,9S)-5-chloro-7-methoxy-10-methyl-2-oxo-6-oxa-3,10-diaza-tricyclo[6.2.1.04,9]undec-3-yl)-methoxycarbonyl-methyl]-2,4-dimethoxy-3-methyl-phenyl ester