3-[N-(tert-butoxycarbonyl)-N-[2-[5-(4-cyclopropyl-3-trifluoromethylbenzyloxy)indolin-1-yl]-2-oxoethyl]amino]propionic acid tert-butyl ester 、
三氟乙酸 在
resultant mixture 作用下,
以
二氯甲烷 为溶剂,
反应 3.5h,
以whereby the title compound (284 mg) was yielded的产率得到3-[N-[2-[5-(4-cyclopropyl-3-trifluoromethylbenzyloxy)indolin-1-yl]-2-oxoethyl]amino]propionic acid trifluoroacetate