(3R,4R,4aS)-1-[(E)-tert-Butoxycarbonylimino]-3-[9-(4-methoxy-benzyloxy)-nonyl]-hexahydro-pyrrolo[1,2-c]pyrimidine-2,4-dicarboxylic acid 2-tert-butyl ester 、
三甲基硅烷化重氮甲烷 以
甲醇 、
苯 为溶剂,
生成 (3R,4R,4aS)-1-[(E)-tert-Butoxycarbonylimino]-3-[9-(4-methoxy-benzyloxy)-nonyl]-hexahydro-pyrrolo[1,2-c]pyrimidine-2,4-dicarboxylic acid 2-tert-butyl ester 4-methyl ester