N2-[(2-chloro-4-fluorophenyl)sulfonyl]-N5-{[(1,1-dimethylethyl)oxy]carbonyl}-D-ornithine 、
三甲基硅烷化重氮甲烷 以
Toluol, Methanol 、
正庚烷 为溶剂,
反应 0.5h,
以to provide 1.3 g of the desired product (70%)的产率得到methyl N2-[(2-chloro-4-fluorophenyl)sulfonyl]-N5-{[(1,1-dimethylethyl)oxy]carbonyl}-D-ornithinate