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