Novel thiazolo[3,2-a]benzimidazol derivatives represented by general formula (1), which act specifically on metabotropic glutamate receptors and are useful as drugs; and novel compounds useful as intermediates for the synthesis of the derivatives wherein, R1 is optionally substituted carbamoyl, carbonyl, oxy, amino, carbonylamino, or the like; R2 is hydrogen, lower alkyl, or the like; and R3, R4 and R5 are each independently hydrogen, lower alkyl, or the like.
通式(1)代表的新型
噻唑并[3,2-a]
苯并咪唑衍
生物,可特异性作用于代谢型谷
氨酸受体并可用作药物;以及可用作合成这些衍
生物的中间体的新型化合物,其中,R1 是任选取代的
氨基甲酰基、羰基、氧基、
氨基、羰基
氨基或类似物;R2 是氢、低级烷基或类似物;R3、R4 和 R5 各自独立地是氢、低级烷基或类似物。