(E)-4-(6-methoxy-1-oxo-tetralin-2-yl)but-2-enal 、
methyl 3-(benzylamino)but-2-enoate 在
methyl 1-benzyl-4-[(6-methoxy-1-oxo-tetralin-2-yl)methyl]-2-methyl-4H-pyridin-3-carboxylate 、 SiO2 、 Petroleum Ether EtOAc 作用下,
以afford the title compound 69 as a yellow oil的产率得到methyl 1-benzyl-4-[(6-methoxy-1-oxo-tetralin-2-yl)methyl]-2-methyl-4H-pyridin-3-carboxylate