Acceleration of Enantioselective Cycloadditions Catalyzed by Second-Generation Chiral Oxazaborolidinium Triflimidates by Biscoordinating Lewis Acids
作者:Barla Thirupathi、Simon Breitler、Karla Mahender Reddy、E. J. Corey
DOI:10.1021/jacs.6b08018
日期:2016.8.31
oxazaborolidines by the strong acid triflimide (Tf2NH) in CH2Cl2 solution leads to highly active chiralLewis acids that are very effective catalysts for (4 + 2) cycloaddition. We report herein that this catalytic activity can be further enhanced by the use of Tf2NH in combination with the biscoordinating Lewis acid TiCl4 or SnCl4 as a coactivator. The effective increase in acidity of an exceedingly strong
[EN] THIOPHEN-2-CARBOXYLIC ACID DERIVATIVES USEFUL AS INHIBITORS OF FLAVIVIRIDAE VIRUSES<br/>[FR] DÉRIVÉS DE L'ACIDE THIOPHÈNE-2-CARBOXYLIQUE UTILES EN TANT QU'INHIBITEURS DES VIRUS FLAVIVIRIDAE
申请人:GILEAD SCIENCES INC
公开号:WO2013010112A1
公开(公告)日:2013-01-17
Provided are compounds of Formula I: and pharmaceutically acceptable salts and esters thereof. The compounds, compositions, and methods provided are useful for the treatment of Flaviviridae virus infections (e.g. hepatitis C infections), particularly drug resistant Flaviviridae virus infections.
Provided are compounds of Formula I:
and pharmaceutically acceptable salts and esters thereof. The compounds, compositions, and methods provided are useful for the treatment of
Flaviviridae
virus infections, particularly hepatitis C infections.