The present invention relates to a novel pyrrolidine compound having melanocortin receptor agonist activity or a pharmaceutically acceptable salt thereof, and to pharmaceutical applications thereof. The present invention relates to a pyrrolidine derivative represented by formula [I], wherein ring A represents an optionally substituted aryl group or the like; R1 represents an optionally substituted alkyl group or the like; R2 represents a halogen atom or the like; and R3 is an alkyl group substituted with an optionally substituted aryl group or the like, and R4 is a hydrogen atom or the like; or R3 and R4 are terminally attached to each other, and together with the nitrogen atom to which they are attached, form an optionally substituted nitrogen-containing aliphatic heterocyclic ring that may partially contain a double bond; or to a pharmaceutically acceptable salt thereof.
本发明涉及一种具有
黑色素皮质素受体激动剂活性的新型
吡咯烷化合物或其药学上可接受的盐及其药物应用。本发明涉及由式[I]代表的
吡咯烷衍
生物,其中环 A 代表任选取代的芳基或类似物;R1 代表任选取代的烷基或类似物;R2 代表卤原子或类似物;R3 是被任选取代的芳基或类似物取代的烷基,R4 是氢原子或类似物;或 R3 和 R4 相互末端连接,并与所连接的氮原子一起形成可部分含有双键的任选取代的含氮脂族杂环;或其药学上可接受的盐。