7-{1,1-dimethyl-2-[2-(trifluoromethyl)-2-oxiranyl]ethyl}-2,3-dihydro-1-benzofurane 、
methyl 3-(4-amino-6-ethyl-1H-pyrazolo[3,4-d]pyrimidin-1-yl)benzoate 生成 methyl 3-(4-{[4-(2,3-dihydro-1-benzofuran-7-yl)-2-hydroxy-4-methyl-2-(trifluoromethyl)pentyl]amino}-6-ethyl-1H-pyrazolo[3,4-d]pyrimidin-1-yl)benzoate