L-苯丙氨醇   、                                                                                      
4-Chloro-pyridine-3-sulfonic acid {(S)-2-[4-(2-fluoro-ethyl)-piperidin-1-yl]-2-oxo-1-pyridin-2-ylmethyl-ethyl}-amide                                                                                                                                                                                              以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 4-((S)-1-Hydroxymethyl-2-phenyl-ethylamino)-pyridine-3-sulfonic acid {(S)-2-[4-(2-fluoro-ethyl)-piperidin-1-yl]-2-oxo-1-pyridin-2-ylmethyl-ethyl}-amide