(R)-4-Carbamoyl-4-((S)-2-{[(2S,4R,5R,6R)-6-((R)-1,2-dihydroxy-ethyl)-4,5-dihydroxy-tetrahydro-pyran-2-carbonyl]-amino}-propionylamino)-butyric acid benzyl ester 在
钯 氢气 作用下,
以91%的产率得到(R)-4-Carbamoyl-4-((S)-2-{[(2S,4R,5R,6R)-6-((R)-1,2-dihydroxy-ethyl)-4,5-dihydroxy-tetrahydro-pyran-2-carbonyl]-amino}-propionylamino)-butyric acid