Neuroactive steroids, compositions, and uses thereof

Provided are compounds according to Formula (I), and pharmaceutically acceptable salts thereof, wherein Z is a group of the formula (i), (ii), (iii), (iv), or (v): and wherein L1, L2, L3, X1, X2, Y, RZ4, RZ5, RZ6, n, R1, R2, R3a, R3b, R4a, R4b, R6a, R6b, R7a, R7b, R11a, R11b, R14, R17, R19, R20, R23a, R23b, and R24 are as defined herein, and pharmaceutical compositions thereof. Compounds of the present invention are contemplated useful for the prevention and treatment of a variety of CNS-related conditions in mammals. 提供根据式(I)的化合物和其药学上可接受的盐、及其药物组合物，其中Z为式(i)、(ii)、(iii)、(iv)或(v)的基团，且其中L1、L2、L3、X1、X2、Y、RZ4、RZ5、RZ6、n、R1、R2、R3a、R3b、R4a、R4b、R6a、R6b、R7a、R7b、R11a、R11b、R14、R17、R19、R20、R23a、R23b和R24如在本文中所定义的。预期本发明的化合物对于哺乳动物中的多种CNS相关病症的预防和治疗是有用的。