6-(cyclopropylmethoxy)-5-(3,3-difluoroazetidin-1-yl)pyridine-2-carboxylic acid 、 3-三氟甲基3-羟基吡咯烷盐酸盐 以to obtain the title compound (28 mg, 47%) as off-white solid, MS (EI)的产率得到[6-(cyclopropylmethoxy)-5-(3,3-difluoroazetidin-1-yl)pyridin-2-yl]-[3-hydroxy-3-(trifluoromethyl)pyrrolidin-1-yl]methanone