申请人:Takeda Chemical Industries, Ltd.
公开号:EP0111997A2
公开(公告)日:1984-06-27
Novel compound of the formula:
[wherein R1 is a pyridyl group; R2 is a phenyl, thienyl, furyl, naphthyl, benzothienyl or pyridyl group which may have as a substituent a lower alkoxy, a lower alkyl, a halogen, trifluoromethyl, a lower alkenyl or methylenedioxy; R3 is hydrogen, benzyl or a lower alkyl; one of R4 and R5 is hydrogen or a lower alkyl, and the other is an aryloxy, or lower aliphatic hydrocarbon, an alicyclic hydrocarbon having not more than 6 carbon atoms or an aromatic group which may have a substituent, or a group represented by the formula, -S(O)m-R6 (in which R6 is phenyl or a lower alkyl group; m is an integer of 0 to 2), or R4 and R5 each combine with the other to represent an alkylene group; n is an integer of 2 to 6], or a pharmaceutically acceptable salt thereof, has a selective inhibitory action on bio-synthesis of thromboxane A2(TXA2) and an effect of enhancing the production of prostaglandin I2(PGI2), and can be used for mammals in the prevention and treatment of arterial thrombosis caused by platelet aggregation or ischemic diseases caused by vaso- spasms in cardiac, cerebral and peripheral circulatory systems (e.g. cardian infarction, apoplexy, infarct of blood vessels in kidney, lung and other organs, pectic ulcer, etc.).
式中的新型化合物:
[其中 R1 是吡啶基;R2 是苯基、噻吩基、呋喃基、萘基、苯并噻吩基或吡啶基,其取代基可以是低级烷氧基、低级烷基、卤素、三氟甲基、低级烯基或亚甲二氧基;R3 是氢、苄基或低级烷基;R4 和 R5 中的一个是氢或低级烷基,另一个是芳氧基、低脂烃、碳原子数不超过 6 个的脂环烃或可带有取代基的芳香族基团,或由式 -S(O)m-R6 所代表的基团(其中 R6 是苯基或低级烷基;m为 0 至 2 的整数),或 R4 和 R5 相互结合代表一个亚烷基;n为 2 至 6 的整数],或其药学上可接受的盐,对血栓素 A2(TXA2)的生物合成具有选择性抑制作用,并具有增强前列腺素 I2(PGI2)生成的作用,可用于哺乳动物预防和治疗血小板聚集引起的动脉血栓或心、脑和外周循环系统血管痉挛引起的缺血性疾病(如心肌梗塞、心绞痛、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死、心肌梗死)。如心肌梗塞、脑中风、肾、肺和其他器官的血管梗塞、溃疡等)。