Neurosteroid Analogues. 18. Structure–Activity Studies of ent-Steroid Potentiators of γ-Aminobutyric Acid Type A Receptors and Comparison of Their Activities with Those of Alphaxalone and Allopregnanolone
摘要:
A model of the alignment of neurosteroids and ent-neurosteroids at the same binding site on gamma-aminobutyric acid type A (GABA(A)) receptors was evaluated for its ability to identify the structural features in ent-neurosteroids that enhance their activity as positive allosteric modulators of this receptor. Structural features that were identified included: (1) a ketone group at position C-16, (2) an axial 4 alpha-OMe group, and (3) a C-18 methyl group. Two ent-steroids were identified that were more potent than the anesthetic steroid alphaxalone in their threshold for and duration of loss of the righting reflex in mice. In tadpoles, loss of righting reflex for these two ent-steroids 0 occurs with EC50 values similar to those found for allopregnanolone. The results indicate that ent-steroids have considerable potential to be developed as anesthetic agents and as drugs to treat brain disorders that are ameliorated by positive allosteric modulators of GABA(A) receptor function.
Neurosteroid Analogues. 18. Structure–Activity Studies of ent-Steroid Potentiators of γ-Aminobutyric Acid Type A Receptors and Comparison of Their Activities with Those of Alphaxalone and Allopregnanolone
摘要:
A model of the alignment of neurosteroids and ent-neurosteroids at the same binding site on gamma-aminobutyric acid type A (GABA(A)) receptors was evaluated for its ability to identify the structural features in ent-neurosteroids that enhance their activity as positive allosteric modulators of this receptor. Structural features that were identified included: (1) a ketone group at position C-16, (2) an axial 4 alpha-OMe group, and (3) a C-18 methyl group. Two ent-steroids were identified that were more potent than the anesthetic steroid alphaxalone in their threshold for and duration of loss of the righting reflex in mice. In tadpoles, loss of righting reflex for these two ent-steroids 0 occurs with EC50 values similar to those found for allopregnanolone. The results indicate that ent-steroids have considerable potential to be developed as anesthetic agents and as drugs to treat brain disorders that are ameliorated by positive allosteric modulators of GABA(A) receptor function.
NEUROACTIVE ENANTIOMERIC 15-, 16- AND 17-SUBSTITUTED STEROIDS AS MODULATORS FOR GABA TYPE-A RECEPTORS
申请人:WASHINGTON UNIVERSITY
公开号:US20150361125A1
公开(公告)日:2015-12-17
The present disclosure is generally directed to neuroactive enantiomeric 15-, 16- and 17-substituted steroids with additional optional substituents at carbons 3, 4, 6, 7, 10 and 13, and pharmaceutically acceptable salts thereof, for use as, for example, modulators for GABA type-A receptors. The present disclosure is further directed to pharmaceutical compositions comprising such compounds.
Neuroactive enantiomeric 15-, 16- and 17-substituted steroids as modulators for GABA type-A receptors
申请人:Washington University
公开号:US10202413B2
公开(公告)日:2019-02-12
The present disclosure is generally directed to neuroactive enantiomeric 15-, 16- and 17-substituted steroids with additional optional substituents at carbons 3, 4, 6, 7, 10 and 13, and pharmaceutically acceptable salts thereof, for use as, for example, modulators for GABA type-A receptors. The present disclosure is further directed to pharmaceutical compositions comprising such compounds.
[EN] NEUROACTIVE ENANTIOMERIC 15-, 16- AND 17-SUBSTITUTED STEROIDS AS MODULATORS FOR GABA TYPE-A RECEPTORS<br/>[FR] STÉROÏDES ÉNANTIOMÈRES NEUROACTIFS SUSBTITUÉS EN POSITION 15, 16 ET 17, UTILISÉS COMME MODULATEURS DE RÉCEPTEURS GABA DE TYPE A
申请人:UNIV WASHINGTON
公开号:WO2014127201A1
公开(公告)日:2014-08-21
The present disclosure is generally directed to neuroactive enantiomeric 15-, 16- and 17- substituted steroids with additional optional substituents at carbons 3, 4, 6, 7, 10 and 13, and pharmaceutically acceptable salts thereof, for use as, for example, modulators for GABA type-A receptors. The present disclosure is further directed to pharmaceutical compositions comprising such compounds.
Neurosteroid Analogues. 18. Structure–Activity Studies of <i>ent</i>-Steroid Potentiators of γ-Aminobutyric Acid Type A Receptors and Comparison of Their Activities with Those of Alphaxalone and Allopregnanolone
作者:Mingxing Qian、Kathiresan Krishnan、Eva Kudova、Ping Li、Brad D. Manion、Amanda Taylor、George Elias、Gustav Akk、Alex S. Evers、Charles F. Zorumski、Steven Mennerick、Douglas F. Covey
DOI:10.1021/jm401577c
日期:2014.1.9
A model of the alignment of neurosteroids and ent-neurosteroids at the same binding site on gamma-aminobutyric acid type A (GABA(A)) receptors was evaluated for its ability to identify the structural features in ent-neurosteroids that enhance their activity as positive allosteric modulators of this receptor. Structural features that were identified included: (1) a ketone group at position C-16, (2) an axial 4 alpha-OMe group, and (3) a C-18 methyl group. Two ent-steroids were identified that were more potent than the anesthetic steroid alphaxalone in their threshold for and duration of loss of the righting reflex in mice. In tadpoles, loss of righting reflex for these two ent-steroids 0 occurs with EC50 values similar to those found for allopregnanolone. The results indicate that ent-steroids have considerable potential to be developed as anesthetic agents and as drugs to treat brain disorders that are ameliorated by positive allosteric modulators of GABA(A) receptor function.