The present invention provides a production intermediate of an atropisomer of a pyrrole derivative having excellent mineralocorticoid receptor antagonistic activity, a method for producing the same, and a crystal thereof. A method for producing an atropisomer of a pyrrole derivative including a step of resolving a compound represented by the following general formula (I) [wherein R1 represents a methyl group or a trifluoromethyl group, R2 represents a hydrogen atom or a C1-C3 alkoxy group, and n represents an integer selected from 1 to 3] into its atropisomers, characterized by using an optically active amine having a cinchonine skeletal formula, and a crystal of (S)-1-(2-hydroxyethyl)-4-methyl-N-[4-(methylsulfonyl)pheny l]-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxamide.
本发明提供了一种具有优异的矿质皮质激素受体拮抗活性的
吡咯衍
生物的阿托异构体的生产中间体、生产该中间体的方法及其晶体。一种生产
吡咯衍
生物的阿托异构体的方法,包括一个步骤,即分解由以下通式 (I) [其中 R1 代表甲基或三
氟甲基,R2 代表氢原子或 C1-C3 烷氧基、和 n 代表选自 1 至 3 的整数]的异构体,其特征在于使用具有
辛可宁骨架式的光学活性胺,以及 (S)-1-(2- 羟乙基)-4-甲基-N-[4-(甲磺酰基)苯基]-5-[2-(三
氟甲基)苯基]-1H-
吡咯-3-甲酰胺的晶体。