4,5-dibromo-1H-pyrrole-2-carboxylic acid ((S)-1-pyrrolidin-3-ylmethyl)-amide trifluoroacetate 、
[2-fluoro-4-(2-oxo-2H-pyridin-1-yl)-phenyl]-carbamic acid 4-nitro-phenyl ester 以to give 4,5-dibromo-1H-pyrrole-2-carboxylic acid {(R)-1-[2-fluoro-4-(2-oxo-2H-pyridin-1-yl)-phenylcarbamoyl]-pyrrolidin-3-ylmethyl}-amide的产率得到4,5-dibromo-1H-pyrrole-2-carboxylic acid {(R)-1-[2-fluoro-4-(2-oxo-2H-pyridin-1-yl)-phenylcarbamoyl]-pyrrolidin-3-ylmethyl}-amide