(E)-4-(6-methoxy-1-oxo-tetralin-2-yl)but-2-enal   、                                                                                      
4-(o-tolylmethylamino)pent-3-en-2-one                                                                                                                                                              在
                                                                                                                                                                                 
2-[[3-acetyl-2-methyl-1-(o-tolylmethyl)-4H-pyridin-4-yl]methyl]-6-methoxy-tetralin-1-one   、                                                                                                  SiO2   、                                                                                                  Petroleum Ether EtOAc                                                                                                                                  作用下,
                                                                                                                                                                                                                            以afford the title compound 71 as a yellow solid的产率得到2-[[3-acetyl-2-methyl-1-(o-tolylmethyl)-4H-pyridin-4-yl]methyl]-6-methoxy-tetralin-1-one