(2S,3S,4R)-4-[(2S,3R)-2-tert-Butoxycarbonylamino-3-(tert-butyl-dimethyl-silanyloxy)-3-(1-trityl-1H-imidazol-4-yl)-propionylamino]-3-hydroxy-2-methyl-pentanoic acid methyl ester 在
lithium hydroxide 作用下,
以72%的产率得到(2S,3S,4R)-4-[(2S,3R)-2-tert-Butoxycarbonylamino-3-(tert-butyl-dimethyl-silanyloxy)-3-(1-trityl-1H-imidazol-4-yl)-propionylamino]-3-hydroxy-2-methyl-pentanoic acid