[(S)-1-((1S,2R)-2-Hydroxy-1-methylcarbamoyl-propylcarbamoyl)-2-methyl-propyl]-carbamic acid benzyl ester 在
伯吉斯试剂 作用下,
以
四氢呋喃 为溶剂,
以73%的产率得到[(S)-2-Methyl-1-((4S,5S)-5-methyl-4-methylcarbamoyl-4,5-dihydro-oxazol-2-yl)-propyl]-carbamic acid benzyl ester