1,4-Benzothiazine-2-acetic acid derivatives, processes for production thereof and their use
申请人:THE GREEN CROSS CORPORATION
公开号:EP0492667A1
公开(公告)日:1992-07-01
1,4-Benzothiazine-2-acetic acid derivatives represented by general formula (I) below:
wherein R¹ represents a group shown by general formula (II) or (III):
wherein R⁵ and R⁶, which may be the same or different, each represents hydrogen, a halogen atom, a lower alkyl group, a lower alkoxyl group, trifluoromethyl or cyano;
wherein R⁷, R⁸, R⁹ and R¹⁰, which may be the same or different, each represents hydrogen, a halogen atom, a lower alkyl group, a lower alkoxyl group or trifluoromethyl ; R² and R³, which may be the same or different, each represents hydrogen, a halogen atom, a lower alkyl group, a lower alkoxyl group, a lower alkylthio group, trifuloromethyl or trifluoromethoxy; R⁴ represents carboxyl which may optionally be esterified; and X represents oxygen or sulfur; and processes for production thereof, as well as a composition for the treatment of complications associated with diabetes and an aldose reductase inhibitor comprising the same.
由以下通式 (I) 代表的 1,4-苯并噻嗪-2-乙酸衍生物:
其中 R¹ 代表通式 (II) 或 (III) 所示的基团:
其中 R⁵ 和 R⁶ 可以相同或不同,各自代表氢、卤素原子、低级烷基、低级烷氧基、三氟甲基或氰基;
其中 R⁷、R⁸、R⁹ 和 R¹⁰ 可以相同或不同,各自代表氢、卤素原子、低级烷基、低级烷氧基或三氟甲基; R² 和 R³ 可以相同或不同,各自代表氢、卤素原子、低级烷基、低级烷氧基、低级烷硫基、三氟甲基或三氟甲氧基;R⁴代表可任选酯化的羧基;X代表氧或硫;及其生产工艺,以及用于治疗糖尿病相关并发症的组合物和由其组成的醛糖还原酶抑制剂。