(S)-3-(2-{(S)-2-[2-((S)-2-tert-Butoxycarbonylamino-propionylamino)-2-methyl-propionylamino]-propionylamino}-2-methyl-propionylamino)-N-{(S)-1-[1-((S)-1-methoxycarbonyl-ethylcarbamoyl)-1-methyl-ethylcarbamoyl]-ethyl}-succinamic acid benzyl ester 在
palladium on activated charcoal
氢气 、
溶剂黄146 作用下,
以89%的产率得到(S)-3-(2-{(S)-2-[2-((S)-2-tert-Butoxycarbonylamino-propionylamino)-2-methyl-propionylamino]-propionylamino}-2-methyl-propionylamino)-N-{(S)-1-[1-((S)-1-methoxycarbonyl-ethylcarbamoyl)-1-methyl-ethylcarbamoyl]-ethyl}-succinamic acid