申请人:MEIJI SEIKA KAISHA LTD.
公开号:EP0621271A1
公开(公告)日:1994-10-26
A benzoxazole derivative of the formula (1) or (2) which has an alicyclic diamine group at the 2-position:
wherein R¹, R², R³ and R⁴ may be the same or different and each represents hydrogen, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkenyl, halogen, hydroxyl, amino, lower alkoxy, carboxyl, carbamoyl and nitro, or any two of R¹ to R⁴ may be linked together to form a three to seven-membered ring structure comprising carbon atoms alone or carbon atoms and 1 to 2 hetero atoms, which may be substituted; R⁵ and R⁶ may be the same or different and each represents substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkenyl, substituted or unsubstituted aralkyl group or an alkoxycarbonyl group, or R⁵ and R⁶ may be linked together to form a three to seven-membered ring structure comprising carbon atoms and 1 to 2 nitrogen atoms, which may be substituted; X⁻ is a pharmaceutically acceptable anion; and m and n may be the same or different and each is an integer of 1 to 3. The compound shows excellent 5-HT₃ receptor antagonism and is useful as an antiemetic agent and also as a peristalsis controlling agent, an analgesic agent, an antianxiety agent and a schizophrenia treating agent.
式(1)或(2)的苯并恶唑衍生物,其 2 位上有脂环二胺基团:
其中 R¹、R²、R³ 和 R⁴ 可以相同或不同,各自代表氢、取代或未取代的低级烷基、取代或未取代的低级烯基、卤素、羟基、氨基、低级烷氧基、羧基、氨基甲酰基和硝基,或者 R¹ 至 R⁴ 中的任意两个可以连接在一起,形成由单独的碳原子或碳原子和 1 至 2 个杂原子组成的三至七元环结构,这些杂原子可以被取代;R⁵和R⁶可以相同或不同,并且各自代表取代或未取代的低级烷基、取代或未取代的低级烯基、取代或未取代的芳烷基或烷氧基羰基,或者R⁵和R⁶可以连接在一起形成由碳原子和 1 至 2 个氮原子组成的三至七元环结构,该结构可以被取代;X- 是药学上可接受的阴离子;m 和 n 可以相同或不同,且各自为 1 至 3 的整数。该化合物具有优异的 5-HT₃ 受体拮抗作用,可用作止吐药,也可用作肠蠕动控制剂、镇痛剂、抗焦虑剂和精神分裂症治疗剂。