Efficient synthesis of an α-trifluoromethyl-α-tosyloxymethyl epoxide enabling stepwise double functionalisation to afford CF3-substituted tertiary alcohols
摘要:
The efficient synthesis of an alpha-trifluoromethyl-alpha-tosyloxymethyl epoxide is reported. This highly versatile building block may be reacted sequentially with two different nucleophiles to furnish alpha-trifluoromethyl tertiary alcohols. Furthermore, the two enantiomers of this key intermediate have been separated using chiral HPLC and the stereochemistry shown to be conserved during subsequent chemical manipulations. Finally, an enzyme-driven desymmetrisation approach has been successfully employed to confer chirality on an intermediate in the sequence. (c) 2008 Elsevier Ltd. All rights reserved.
PYRAZOLE DERIVATIVES AS NON-STEROIDAL GLUCOCORTICOID RECEPTOR LIGANDS
申请人:Campbell Ian Baxter
公开号:US20100035926A1
公开(公告)日:2010-02-11
The present invention provides compounds of formula (I):
a process for their preparation, to pharmaceutical compositions comprising the compounds and the preparation of said compositions, to intermediates, and to use of the compounds for the manufacture of a medicament for therapeutic treatment, particularly for the treatment of inflammation.
[EN] PYRAZOLE DERIVATIVES AS NON-STEROIDAL GLUCOCORTICOID RECEPTOR LIGANDS<br/>[FR] DÉRIVÉS DE PYRAZOLE EN TANT QUE LIGANDS DES RÉCEPTEURS DES GLUCOCORTICOÏDES NON STÉROÏDIENS
申请人:GLAXO GROUP LTD
公开号:WO2008074814A1
公开(公告)日:2008-06-26
[EN] The present invention provides compounds of formula (I), a process for their preparation, to pharmaceutical compositions comprising the compounds and the preparation of said compositions, to intermediates, and to use of the compounds for the manufacture of a medicament for therapeutic treatment, particularly for the treatment of inflammation. [FR] La présente invention concerne des composés de formule (I), leur procédé de préparation, des compositions pharmaceutiques comprenant les composés, la préparation desdites compositions, les intermédiaires et l'utilisation des composés dans la fabrication d'un médicament destiné à un traitement thérapeutique, en particulier destiné au traitement de l'inflammation.
Efficient synthesis of an α-trifluoromethyl-α-tosyloxymethyl epoxide enabling stepwise double functionalisation to afford CF3-substituted tertiary alcohols
作者:Steven P. Keeling、Ian B. Campbell、Diane M. Coe、Tony W.J. Cooper、George W. Hardy、Torquil I. Jack、Haydn T. Jones、Deborah Needham、Tracy J. Shipley、Philip A. Skone、Peter W. Sutton、Gordon A. Weingarten、Simon J.F. Macdonald
DOI:10.1016/j.tetlet.2008.06.011
日期:2008.8
The efficient synthesis of an alpha-trifluoromethyl-alpha-tosyloxymethyl epoxide is reported. This highly versatile building block may be reacted sequentially with two different nucleophiles to furnish alpha-trifluoromethyl tertiary alcohols. Furthermore, the two enantiomers of this key intermediate have been separated using chiral HPLC and the stereochemistry shown to be conserved during subsequent chemical manipulations. Finally, an enzyme-driven desymmetrisation approach has been successfully employed to confer chirality on an intermediate in the sequence. (c) 2008 Elsevier Ltd. All rights reserved.