(S)-4-[(S)-3-hydroxy-4-((S)-4-hydroxy-6-aza-spiro[2.5]oct-6-yl)-4-oxo-butyl]-2-methyl-3-oxo-piperazine-1-carboxylic acid benzyl ester 在
palladium 10% on activated carbon
盐酸 、
氢气 作用下,
以
水 为溶剂,
反应 1.0h,
以99%的产率得到(S)-1-[(S)-3-hydroxy-4-((S)-4-hydroxy-6-aza-spiro[2.5]oct-6-yl)-4-oxo-butyl]-3-methyl-piperazin-2-one hydrochloride