2-(3-(trifluoromethyl)-6,7-dihydropyrano[4,3-c]pyrazol-1(4H)-yl)acetic acid   、                                                                                      
2-吡嗪羧酰胺                                                                                                                                                                                                                                                                                                          以the titled compound was obtained in the same manner as in Example 249的产率得到1-[(3-Pyrazin-2-yl-1,2,4-oxadiazol-5-yl)methyl]-3-(trifluoromethyl)-1,4,6,7-tetrahydropyrano[4, 3-c]pyrazole