(2R,5R)-5-({tert-Butoxycarbonyl-[(R)-1-carboxy-2-(1H-indol-3-yl)-ethyl]-amino}-methyl)-pyrrolidine-2-carboxylic acid methyl ester 在
lithium hydroxide 、 (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 作用下,
以
四氢呋喃 、
二氯甲烷 为溶剂,
生成 (3R,6R,9R)-2-(3-indolylmethyl)-4-(tert-butoxycarbonyl)-1,4-diaza-2-oxobicyclo<4.3.0>nonane-9-carboxylic acid