6-(cyclopropylmethoxy)-5-(3,3-difluoroazetidin-1-yl)pyridine-2-carboxylic acid 、
(3-氟氮杂环丁烷-3-基)甲醇 以to obtain the title compound (11 mg, 42%) as colorless liquid, MS (ESI)的产率得到[6-(cyclopropylmethoxy)-5-(3,3-difluoroazetidin-1-yl)-2-pyridyl]-[3-fluoro-3-(hydroxymethyl)azetidin-1-yl]methanone