Synthesis and GABAA receptor activity of oxygen-bridged neurosteroid analogs
Three analogs of neuroactive steroids were prepared (4-6) in which 1,11- or 11,19-oxygen bridges give a constrained conformation. Their 3D structures were obtained by ab initio calculations and in the case of 3α-hydroxy-11,19-epoxypregn-4-ene-20-one (4), confirmed by X-ray analysis. Biological activ...
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| Autores principales: | , , , , |
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2008
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09680896_v16_n7_p3831_Alvarez http://hdl.handle.net/20.500.12110/paper_09680896_v16_n7_p3831_Alvarez |
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| Sumario: | Three analogs of neuroactive steroids were prepared (4-6) in which 1,11- or 11,19-oxygen bridges give a constrained conformation. Their 3D structures were obtained by ab initio calculations and in the case of 3α-hydroxy-11,19-epoxypregn-4-ene-20-one (4), confirmed by X-ray analysis. Biological activity of the synthetic steroids was assayed in vitro using t-[3H]butylbicycloorthobenzoate as radiolabeled ligand for the GABAA receptor. The activity of compound 4 was similar to that of allopregnanolone (1). 1α,11α-Epoxypregnanolone (6) was more active than pregnanolone (2). © 2008 Elsevier Ltd. All rights reserved. |
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