2-{(R)-3-[(5-chloro-thiophene-2-carbonyl)-amino]-pyrrolidin-1-yl}-propionic acid ethyl ester 、
1-(4-氨基-3-氟苯基)吡啶-2(1h)-酮 以to give 5-chloro-thiophene-2-carboxylic acid ((R)-1-{1-[2-fluoro-4-(2-oxo-pyridin-1-yl)-phenylcarbamoyl]-ethyl}-pyrrolidin-3-yl)-amide的产率得到5-chloro-thiophene-2-carboxylic acid ((R)-1-{1-[2-fluoro-4-(2-oxo-pyridin-1-yl)-phenylcarbamoyl]-ethyl}-pyrrolidin-3-yl)-amide