[1-((S)-2-tert-butoxycarbonylamino-3,3-dimethyl-butyryl)-piperidin-4-yl]-(5-methoxy-4-oxo-4H-pyran-2-ylmethyl)-carbamic acid 2,2,2-trichloro-ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 
盐酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙酸乙酯                                                                                  为溶剂,
                                                                                                                                                                                        以100%的产率得到[1-((S)-2-amino-3,3-dimethyl-butyryl)-piperidin-4-yl]-(5-methoxy-4-oxo-4H-pyran-2-ylmethyl)-carbamic acid 2,2,2-trichloro-ethyl ester hydrochloride