Objects of the present invention are to study on the synthesis of a novel pyrrole derivative having a ureido group and an aminocarbonyl group as substituents or a salt thereof, to find a pharmacological effect of the derivative or a salt thereof, and to find a medicinal agent which has a prophylactic and/or therapeutic effect on a retinal disease or the like through oral administration. A compound represented by the general formula (1) or a salt thereof has an inhibitory activity against the production of interleukin-6 and/or an inhibitory effect on choroidal neovascularization, and is therefore useful as a prophylactic and/or therapeutic agent for a disease associated with interleukin-6, an ocular inflammatory disease and/or a retinal disease. In the formula, the ring A represents a benzene ring or the like; R1 represents a halogen atom, a hydrogen atom, a lower alkyl group or the like; R2 represents a halogen atom, a lower alkyl group which may have a substituent, a lower alkenyl group, a lower alkynyl group which may have a substituent, a lower cycloalkyl group, an aryl group, a hydroxy group, a lower alkoxy group which may have a substituent or the like; and n represents 0, 1, 2, 3 or the like.
本发明的目的是研究具有
脲基和
氨基羰基作为取代基的新型
吡咯衍
生物或其盐的合成,找到该衍
生物或其盐的药理作用,并找到一种通过口服对视网膜疾病或类似疾病具有预防和/或治疗作用的药剂。通式(1)代表的化合物或其盐具有抑制白细胞介素-6 生成的活性和/或对脉络膜新生血管的抑制作用,因此可作为白细胞介素-6 相关疾病、眼部炎症性疾病和/或视网膜疾病的预防和/或治疗药物。在式中,环 A 代表
苯环或类似物;R1 代表卤素原子、
氢原子、低级烷基或类似物;R2 代表卤素原子、可能具有取代基的低级烷基、低级
烯基、可能具有取代基的低级炔基、低级
环烷基、芳基、羟基、可能具有取代基的低级烷
氧基或类似物;n 代表 0、1、2、3 或类似物。