3-benzyloxy-4-((S)-2-tert-butoxycarbonyl-1-carbamoyl-ethylsulfamoyl)-benzoic acid methyl ester 在
钯 氢气 作用下,
以
乙醇 为溶剂,
反应 1.5h,
以4-((S)-2-tert-Butoxycarbonyl-1-carbamoyl-ethylsulfamoyl)-3-hydroxy-benzoic acid methyl ester was obtained (6.03 g, 99%) as an off white foam的产率得到4-((S)-2-tert-Butoxycarbonyl-1-carbamoyl-ethylsulfamoyl)-3-hydroxy-benzoic acid methyl ester