7-(4-Fluoro-phenyl)-5-isopropyl-2-phenyl-pyrazolo[1,5-a]pyrimidine-6-carbaldehyde                                                                                                                                                              在
                                                                                                                                                                                 
正丁基锂   、                                                                                                  sodium hydride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 (E)-7-[7-(4-Fluoro-phenyl)-5-isopropyl-2-phenyl-pyrazolo[1,5-a]pyrimidin-6-yl]-5-hydroxy-3-oxo-hept-6-enoic acid ethyl ester