The intramolecular 1,3-dipolar cycloaddition of silacarbonyl ylides derived from a silylene and unsaturated aldehydes tethered to unactivated olefinic or acetylenicdipolarophiles successfully proceeded to directly afford bicyclosilaoxolane derivatives in good yields.
producing a library of functionalized trifluoromethylated δ,ϵ- or γ,δ-unsaturatedaldehydes in moderate to excellent yields with good functional group tolerance. The controllable installation of three functional groups, such as CF3, CHO, and a C−C double bond, provides a very attractive protocol for rapid synthesis of complex molecules from simple starting materials.
Neue Megastigman-4,7-oxyde (I) und neue 7-Oxabicyclo(3.3.0)-octane (II), Verfahren zur Herstellung von (I) und (II), Verwendung von (I) und (II) als Riech- und/oder Geschmackstoffe sowie Riech- und/oder Geschmackstoffkompositionen mit einem Gehalt an (I) oder (II)
申请人:L. Givaudan & Cie Société Anonyme
公开号:EP0003515B1
公开(公告)日:1981-02-11
Macrocyclic Inhibitors of Hepatitis C Virus NS3 Serine Protease
申请人:Venkatraman Srikanth
公开号:US20110150835A1
公开(公告)日:2011-06-23
The present invention discloses novel compounds which have HCV protease inhibitory activity as well as methods for preparing such compounds. In another embodiment, the invention discloses pharmaceutical compositions comprising such compounds as well as methods of using them to treat disorders associated with the HCV protease.