[(S)-1-{[(Azidocarbonylmethyl-carbamoyl)-methyl]-carbamoyl}-2-(4-tert-butoxy-phenyl)-ethyl]-carbamic acid 9H-fluoren-9-ylmethyl ester 以
甲苯 为溶剂,
以94%的产率得到((S)-2-(4-tert-Butoxy-phenyl)-1-{[(isocyanatomethyl-carbamoyl)-methyl]-carbamoyl}-ethyl)-carbamic acid 9H-fluoren-9-ylmethyl ester