[EN] PROCESS FOR THE PREPARATION OF 3ALPHA-HYDROXY-5ΑLPHA-PREGNAN-20-ONE (BREXANOLONE) [FR] PROCÉDÉ DE PRÉPARATION DE 3ALPHA-HYDROXY-5ΑLPHA-PRÉGNAN-20-ONE (BREXANOLONE)
Novel Steroid Inhibitors of Glucose 6-Phosphate Dehydrogenase
作者:Niall M. Hamilton、Martin Dawson、Emma E. Fairweather、Nicola S. Hamilton、James R. Hitchin、Dominic I. James、Stuart D. Jones、Allan M. Jordan、Amanda J. Lyons、Helen F. Small、Graeme J. Thomson、Ian D. Waddell、Donald J. Ogilvie
DOI:10.1021/jm300317k
日期:2012.5.10
Novel derivatives of the steroid DHEA 1, a known uncompetitive inhibitor of G6PD, were designed, synthesized, and tested for their ability to inhibit this dehydrogenase enzyme. Several compounds with approximately 10-fold improved potency in an enzyme assay were identified, and this improved activity translated to efficacy in a cellular assay. The SAR for steroid inhibition of G6PD has been substantially
A novel scalable and stereospecific synthesis of 3α- and 3β-amino-5α-androstan-17-ones and 3α- and 3β-amino-5α-pregnan-20-ones
作者:James R. Hitchin、Niall M. Hamilton、Allan M. Jordan、Amanda J. Lyons、Donald J. Ogilvie
DOI:10.1016/j.tetlet.2012.03.124
日期:2012.6
A novel scalable stereoselective synthesis of 3 alpha- and 3 beta-amino-5 alpha-androstan-17-ones and 3 alpha- and 3 beta-amino-5 alpha-pregnan-20-ones has been developed using phthalimide based Mitsunobu chemistry. In all four cases, the products were isolated as single diastereoisomers in high chemical yield and purity without the need for chromatography at any stage in their syntheses. (C) 2012 Elsevier Ltd. All rights reserved.
DERIVATIVES OF ALLOPREGNANOLONE AND OF EPIALLOPREGNANOLONE AND USES THEREOF FOR TREATING A NEUROPATHOLOGICAL CONDITION
申请人:Mensah-Nyagan Ayikoe Guy
公开号:US20140058079A1
公开(公告)日:2014-02-27
The présent invention relates to novel neurosteroids, especially derivatives of allopregnanolone and of epiallopregnanolone of formula (I) and the uses thereof as médicament for the treatment of neuropathologies, in particular neuropathies induced by the chemotherapy of a cancer. Thèse molécules according to the invention have both preventative and curative effects. The neurosteroids according to the invention may also be of use in the treatment of neurodegenerative disorders, in particular for preventing neuronal cell death. They may thus be used as neuroprotectants and/or as an agent that stimulâtes neuronal prolifération.
[EN] PROCESS FOR THE PREPARATION OF 3ALPHA-HYDROXY-5ΑLPHA-PREGNAN-20-ONE (BREXANOLONE)<br/>[FR] PROCÉDÉ DE PRÉPARATION DE 3ALPHA-HYDROXY-5ΑLPHA-PRÉGNAN-20-ONE (BREXANOLONE)
申请人:IND CHIMICA SRL
公开号:WO2020083839A1
公开(公告)日:2020-04-30
The present invention relates to a new process for the synthesis of 3a-hydroxy-5a-pregnan-20-one, commonly known as brexanolone, wherein the corresponding cyclic 20-ketal or cyclic 20-thioketal compound of formula (IV) is deprotected with the use or iodine in an organic solvent: (I).