申请人:NIKKEN CHEMICALS CO., LTD.
                            
                            
                                公开号:EP0118120A2
                            
                            
                                公开(公告)日:1984-09-12
                            
                            
1,4-Dihydropyridine compound having the general formula:
wherein R is 2-(5,6-dihydro-p-dioxinyl), 2-(3,5-dimethyl-5,6-dihydro-p-dioxinyl), 2-(3-methyl-5,6-dihydro-p-dioxinyl), 2-(3-methoxymethyl-5,6-dihydro-p-dioxinyl), 5-(3,4-dihydro-2H-pyranyl), or 2-(5,6-dihydro-1,4-dithiinyl); R1 and R2 are independently a cyano group, an acetyl group, or a substituted oxycarbonyl group having the general formula COOR4 wherein R4 is a methyl, isopropyl, allyl, propargyl, methoxymethyl, 2-methoxyethyl, or 1-methyl-2-methoxyethyl group provided that both R' and R2 are nor -COOCH3 in the case of R being 2-(5,6-dihydro-p-dioxinyl) and R3 being hydrogen; and R3 is hydrogen or a methoxymethyl group. This 1,4-dihydropyridine compound has a remarkable liver protective action and a low toxicity.
                            具有通式的 1,4-
二氢吡啶化合物:
其中 R 是 2-(5,6-二氢-对-二恶英基)、2-(3,5-二甲基-5,6-二氢-对-二恶英基)、2-(3-甲基-5,6-二氢-对-二恶英基)、2-(3-甲氧基甲基-5,6-二氢-对-二恶英基)、5-(
3,4-二氢-2H-吡喃基)或 2-(5,6-二氢-1,4-二
硫鎓基);R1 和 R2 独立地是
氰基、乙酰基或具有通式 COOR4 的取代氧羰基,其中 R4 是甲基、异丙基、烯丙基、
丙炔基、甲氧基甲基、2-甲氧基乙基或 1-甲基-2-甲氧基乙基,条件是 R' 和 R2 都不是-COOCH3(在 R 是 2-(5,6-二氢-对-
二噁烷基)和 R3 是氢的情况下);以及 R3 是氢或甲氧基甲基。这种 1,4-
二氢吡啶化合物具有显著的护肝作用,毒性较低。