The present invention belongs to the technical field of medicine, relating in particular to: a fused ring compound as represented by Formula (I) for use as a mineralocorticoid receptor antagonist, a pharmaceutically acceptable salt thereof, and an isomer thereof; a preparation method for these compounds; a pharmaceutical preparation containing these compounds; and an application of these compounds, the pharmaceutically acceptable salt thereof, or the isomers thereof in the preparation of medicants for the treatment and/or prevention of kidney injury, cardiovascular diseases such as hypertension, and/or endocrine disease. The definitions of X, Y
1
, Y
2
, Y
3
, R
1
, R
2a
, R
2b
, R
3a
, R
3b
, R
4
, Cy and n are as presented in the description.
本发明属于医学技术领域,特别涉及以下内容:用于作为矿物质皮质激素受体拮抗剂的融合环化合物,其
化学式为(I),以及其药学上可接受的盐和异构体;这些化合物的制备方法;含有这些化合物的制药制剂;以及这些化合物、其药学上可接受的盐或异构体在制备用于治疗和/或预防肾损伤、心血管疾病(如高血压)和/或内分泌疾病的药物中的应用。其中,X、Y1、Y2、Y3、R1、R2a、R2b、R3a、R3b、R4、Cy 和 n 的定义如说明书中所述。