申请人:KYORIN PHARMACEUTICAL CO., LTD.
公开号:EP0434844A1
公开(公告)日:1991-07-03
Cyclic anthranilic acid derivatives of general formula (I) and acid addition salts and alkali salts thereof, useful for treating rheumatism, autoimmune diseases and metabolic bone diseases, wherein R¹, R² and R³ may be the same of different from one another and each represents hydrogen, halogen, lower (C₁ to C₃) alkyl, lower (C₁ to C₃) alkoxy, amino, nitro, hydroxy, sulfonamide, trifluoromethyl, cyano, carboxyl, carbamoyl, acetyl, optionally substituted benzoylmethyl, methylthio, optionally substituted phenylethynyl, optionally substituted ethynyl, lower (C₁ to C₃) alkanoylamino, optionally substituted benzoylamino, lower (C₁ to C₃) alkylsulfonylamino, or optionally substituted phenylsulfonylamino; R⁴ and R⁵ may be the same or different from each other and each represents hydrogen, lower (C₁ to C₃) alkyl, cyano, carboxyl, hydroxylmethyl, optionally substituted phenyl, or benzyl; R⁶ represents hydrogen, lower (C₁ to C₃) alkyl or benzyl; X represents a single bond, -CHR⁷-CHR⁸-(CHR⁹)m-, -O-CHR⁸-(CHR⁹)m-, -S(O)n-CHR⁸-(CHR⁹)m- or -CO(CHR⁸)p-(CHR⁸)m-; R⁷, R⁸ and R⁹ may be the same or different from one another and each represents hydrogen, lower (C₁ to C₃) alkyl, cyano, carboxyl, hydroxymethyl, or optionally substituted phenyl; m and p are each 0 or 1; and n is an integer of 0 to 2; provided that R² represents neither chlorine nor hydrogen when both of R⁷ and R⁸ are hydrogen atoms and m is 0.
通式(I)的环状蒽酸衍生物及其酸加成盐和碱式盐,可用于治疗风湿病、自身免疫性疾病和代谢性骨病,其中R¹、R²和R³可以相同也可以不同,各自代表氢、卤素、低级(C₁至C₃)烷基、低级(C₁至C₃)烷氧基、氨基、硝基、羟基、磺酰胺、三氟甲基、氰基、羧基、氨基甲酰基、乙酰基、任选取代的苯甲酰甲基、甲硫基、任选取代的苯乙基、硝基、羟基、磺酰胺基、三氟甲基、氰基、羧基、氨基甲酰基、乙酰基、任选取代的苯甲酰甲基、甲硫基、任选取代的苯乙炔基、任选取代的乙炔基、低级(C₁至 C₃)烷酰氨基、任选取代的苯甲酰氨基、低级(C₁至 C₃)烷基磺酰基氨基或任选取代的苯磺酰基氨基;R⁴ 和 R⁵ 可以相同或互不相同,各自代表氢、低级(C₁ 至 C₃)烷基、氰基、羧基、羟甲基、任选取代的苯基或苄基;R⁶ 代表氢、低级 (C₁ 至 C₃) 烷基或苄基;X 代表单键、-CHR⁸-(CHR⁹)m-、-O-CHR⁸-(CHR⁹)m-、-S(O)n-CHR⁸-(CHR⁹)m- 或 -CO(CHR⁸)p-(CHR⁸)m-;R⁷、R⁸ 和 R𠞙 可以相同或不同,各自代表氢、低级 (C₁ 至 C₃) 烷基、氰基、羧基、羟甲基或任选取代的苯基;当 R⁷ 和 R⁸ 均为氢原子且 m 为 0 时,R² 既不代表氯,也不代表氢。