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.
[EN] INHIBITORS OF FLAVIVIRIDAE VIRUSES<br/>[FR] INHIBITEURS DE VIRUS DE LA FAMILLE DES FLAVIVIRIDAE
申请人:GILEAD SCIENCES INC
公开号:WO2011031669A1
公开(公告)日:2011-03-17
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, particularly hepatitis C infections.
In situ prepared Cp2ZrCl⊕ catalyzes the formation of dioxolenium ions from α,β-unsaturated epoxy esters. As a consequence of this activation process, acrylate, methacrylate and crotonate derivatives undergo a rapid and stereoselective cationic [4+2] cycloaddition with a wide range of dienes. Ring-extended carboxylic acid derivatives are formed in 1–7 h at 0–21 °C and in 50–90% yield after saponification