(R)-[3-oxo-3-[5-(4-sulfamoylbenzylcarbamoyl)-4,5-dihydropyrazol-1-yl]-1-(2,4,5-trifluorobenzyl)propyl]carbamic acid tert-butyl ester 在
盐酸 作用下,
以
1,4-二氧六环 、
乙酸乙酯 为溶剂,
反应 12.0h,
以76%的产率得到2-[(3R)-3-amino-4-(2,4,5-trifluorophenyl)butanoyl]-N-[(4-sulfamoylphenyl)methyl]-3,4-dihydropyrazole-3-carboxamide;hydrochloride