申请人:KYORIN PHARMACEUTICAL CO., LTD.
公开号:EP0456835A1
公开(公告)日:1991-11-21
A quinazoline-3-alkanoic acid derivative of general formula (I), which has both of platelet agglutination inhibition and aldose reductase inhibition activities, salts thereof, process for producing the same, and a medicine containing the same, wherein R represents hydrogen or a protective group of the carboxyl group; R' represents lower alkyl, alkenyl, alkynyl, lower alkoxy, lower alkylthio, halogen, phenyl (which may be substituted with 1 to 3 substituents selected from among lower alkyl, lower alkoxy, halogen, trifluoromethyl, carboxyethylene, and ethoxy-carbonylethylene groups), naphthyl, heterocycle (which may be substituted with 1 to 3 lower alkyl groups), cycloalkyl, or benzoyl (which may be substituted with lower alkyl or halogen); R² and R³ may be the same or different from each other and each represents hydrogen, halogen, lower alkyl, lower alkoxy, optionally substituted aralkyl, nitro, imidazolyl, imidazolylmethyl, or -NR⁴R⁵ wherein R⁴ and R⁵ may be the same or different from each other and each represents hydrogen or lower alkyl, or they are combined with each other to form a 5- or 6-membered heterocycle which may contain other heteroatom(s); X represents carbonyl, thiocarbonyl or methylene (which may be substituted with lower alkyl); A represents lower alkylene or lower alkenylene; and n is an integer of 1 to 3.
一种同时具有血小板凝集抑制活性和醛糖还原酶抑制活性的通式(I)的喹唑啉-3-烷酸衍生物、其盐类、生产工艺以及含有该衍生物的药物,其中 R 代表氢或羧基的保护基团;R'代表低级烷基、烯基、炔基、低级烷氧基、低级烷硫基、卤素、苯基(可被 1 至 3 个选自低级烷基、低级烷氧基、卤素、三氟甲基、羧基乙烯和乙氧基羰基乙烯基团的取代基取代)、萘基、杂环(可被 1 至 3 个低级烷基取代)、环烷基或苯甲酰基(可被低级烷基或卤素取代);R² 和 R³ 可以相同或互不相同,各自代表氢、卤素、低级烷基、低级烷氧基、任选取代的芳烷基、硝基、咪唑基、咪唑甲基或 -NR⁴R⁵,其中 R⁴ 和 R⁵ 可以相同或互不相同,各自代表氢或低级烷基,或者它们相互结合形成 5 或 6 元杂环,该杂环可含有其他杂原子;X 代表羰基、硫代羰基或亚甲基(可被低级烷基取代);A 代表低级亚烷基或低级亚烯基;n 是 1 至 3 的整数。