(3-{[(S)-1-Benzyl-3-((S)-2-tert-butoxycarbonylamino-3-methyl-butyryl)-2-oxo-imidazolidine-4-carbonyl]-amino}-2-hydroxy-hexanoylamino)-acetic acid allyl ester 在
戴斯-马丁氧化剂 作用下,
以83%的产率得到(3-{[(S)-1-Benzyl-3-((S)-2-tert-butoxycarbonylamino-3-methyl-butyryl)-2-oxo-imidazolidine-4-carbonyl]-amino}-2-oxo-hexanoylamino)-acetic acid allyl ester