N-邻苯二甲酰甘氨酰氯 、
(2S,3R)-3-(tert-Butyl-dimethyl-silanyloxy)-2-{[1-methoxycarbonyl-meth-(E)-ylidene]-amino}-butyric acid methyl ester 在
TEA 作用下,
以
二氯甲烷 为溶剂,
生成 (2R,3R)-1-[(1S,2R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-methoxycarbonyl-propyl]-3-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-4-oxo-azetidine-2-carboxylic acid methyl ester 、 (2S,3S)-1-[(1S,2R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-methoxycarbonyl-propyl]-3-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-4-oxo-azetidine-2-carboxylic acid methyl ester