{(S)-1-[(S)-1-((S)-1-Azidocarbonyl-3-methyl-butylcarbamoyl)-ethylcarbamoyl]-2-methyl-propyl}-carbamic acid 9H-fluoren-9-ylmethyl ester 以
甲苯 为溶剂,
以92%的产率得到{(S)-1-[(S)-1-((R)-1-Isocyanato-3-methyl-butylcarbamoyl)-ethylcarbamoyl]-2-methyl-propyl}-carbamic acid 9H-fluoren-9-ylmethyl ester