三氟乙酸 、
4-tert-butoxycarbonylamino-4-(1-tert-butoxycarbonylethylcarbamoyl)butyric acid 4-[4-(4-chlorophenyl)-6,7-dihydro-4H-thieno[3,2-c]pyridine-5-carbonyl]-benzyl ester 以
二氯甲烷 为溶剂,
反应 3.0h,
以100%的产率得到1-(1-carboxyethylcarbamoyl)-3-{4-[4-(4-chlorophenyl)-4,5,6,7-tetrahydro-4H-thieno[3,2-c]pyridine-5-carbonyl]benzyloxycarbonyl}propylammonium trifluoroacetate