2-((4-fluorobenzylamino)methyl)-7,8-dihydro-3H-pyrano[4,3-d]pyrimidin-4(5H)-one 、 2-(4-(4-Fluorobenzoyl)piperidin-1-YL)acetic acid 、 生成 2-(4-(4-fluorobenzoyl)piperidin-1-yl)-N-(4-fluorobenzyl)-N-((4-oxo-4,5,7,8-tetrahydro-3H-pyrano[4,3-d]pyrimidin-2-yl)methyl)ethanamide