{(2R,3R)-2-Acetoxy-3-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-oxo-azetidin-1-yl}-oxo-acetic acid 4-nitro-benzyl ester 反应 10.0h,
生成 {(2R,3R)-2-Acetoxy-3-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-oxo-azetidin-1-yl}-(diethoxy-phosphoryl)-acetic acid 4-nitro-benzyl ester