(1S,2S)-2-(2-carbamoyl-5-(6,6-dimethyl-4-oxo-3-(trifluoromethyl)-4,5,6,7-tetrahydro-1H-indazol-1-yl)-3-fluorophenylamino)cyclopentyl 2-(tert-butoxycarbonylamino)acetate 在
甲烷磺酸 、
溶剂黄146 作用下,
反应 3.17h,
以81%的产率得到(1S,2S)-2-(2-carbamoyl-5-(6,6-dimethyl-4-oxo-3-(trifluoromethyl)-4,5,6,7-tetrahydro-1H-indazol-1-yl)-3-fluorophenylamino)cyclopentyl 2-aminoacetate