申请人:KYORIN PHARMACEUTICAL CO., LTD.
公开号:EP0310096A2
公开(公告)日:1989-04-05
Cyclic anthranilic acid derivatives of the following formula,
wherein R¹, R² and R³ each independently indicate a hydrogen atom, lower alkyl group having 1 to 3 carbon atoms, lower alkoxy group having 1 to 3 carbon atoms, amino group, nitro group, hydroxy group, sulfonamide group, trifluoromethyl group, cyano group, carboxyl group, carbamoyl group, acetyl group, benzoylmethyl group which may be substituted, methylthio group, phenylethynyl group which may be substituted, ethynyl group which may be substituted, alkanoylamino group having 1 to 3 carbon atoms, benzoylamino group which may be substituted, alkylsulfonylamino group having 1 to 3 carbon atoms or phenylsulfonylamino group which may be substituted; R⁴ and R⁵ each independently indicate a hydrogen atom, lower alkyl group having 1 to 3 carbon atoms, cyano group, carboxyl group, hydroxymethyl group, phenyl group which may be substituted or benzyl group; R⁶ indicates a hydrogen atom, lower alkyl group having 1 to 3 carbon atoms or benzyl group; X indicates a methylene group, oxygen atom, sulfur atom, sulfinyl group or sulfonyl group; their acid or alkali salts thereof are useful as antirheumatoid agents.
下式的环状蒽酸衍生物、
其中 R¹、R² 和 R³ 各自独立地表示氢原子、具有 1 至 3 个碳原子的低级烷基、具有 1 至 3 个碳原子的低级烷氧基、氨基、硝基、羟基、磺酰胺基、三氟甲基、氰基、羧基、氨基甲酰基、乙酰基、可被取代的苯甲酰甲基、甲硫基、可被取代的苯乙炔基、可被取代的乙炔基、具有 1 至 3 个碳原子的烷酰氨基、可被取代的苯甲酰氨基、具有 1 至 3 个碳原子的烷磺酰氨基或可被取代的苯磺酰氨基;R⁴ 和 R⁵ 各自独立地表示氢原子、具有 1 至 3 个碳原子的低级烷基、氰基、羧基、羟甲基、可被取代的苯基或苄基;R⁶ 表示氢原子、具有 1 至 3 个碳原子的低级烷基或苄基;X 表示亚甲基、氧原子、硫原子、亚磺酰基或磺酰基;它们的酸盐或碱盐可用作抗类风湿剂。