The present invention is directed to compounds of formulae (I) and (II) and pharmaceutically acceptable forms thereof; pharmaceutical compositions thereof; and methods of treating a viral infection, such as a hepatitis C virus (HCV) infection, by administering to a subject diagnosed with or being susceptible to the viral infection a compound of formulae (I) and (II), a pharmaceutically acceptable form thereof, or a pharmaceutical composition thereof. The present invention is also directed to high-throughput methods of identifying compounds able to modulate hepatitis C virus (HCV) replication activity.
Intramolecular cycloaddition in 6,6-spiroepoxycyclohexa-2,4-dienone: simple aromatics to (±)-Platencin
作者:Vishwakarma Singh、Bharat Chandra Sahu、Varsha Bansal、Shaikh M. Mobin
DOI:10.1039/c004316h
日期:——
A formal totalsynthesis of platencin from a simple aromatic precursor is described. Transformation of the aromatic compound into reactive spiroepoxycyclohexa-2,4-dienone and intramolecular cycloaddition are the key features of our methodology. 2-Hydroxymethyl-6-(3-hydroxy-hex-5-enyl)-phenol was oxidized with NaIO4 to give a dimer that, upon a retro-Diels–Alder reaction, generated the spiroepoxycyclohexa-2
A tandem oxidative dearomatization/intramolecular Diels–Alder reaction: a short and efficient entry into tricyclic system of maoecrystal V
作者:Vishwakarma Singh、Pravin Bhalerao、Shaikh M. Mobin
DOI:10.1016/j.tetlet.2010.04.082
日期:2010.6
A short and efficient route to tricyclic ring system containing bridged bicyclo[2.2.2]octanone annulated with a lactone ring present in the maoecrystal is described. In-situ generation of spiroepoxycyclohexa-2,4-dienone and intramolecular cycloaddition are the key features of our approach. (C) 2010 Elsevier Ltd. All rights reserved.
The present invention aims to provide a curable resin composition which gives a cured product having a low linear expansion coefficient. The curable resin composition of the present invention contains, as essential components, (A) an organic compound having at least two carbon-carbon double bonds reactive with SiH groups per molecule, (B) a compound containing at least two SiH groups per molecule, (C) a hydrosilylation catalyst, (D) a silicone compound having at least one carbon-carbon double bond reactive with a SiH group per molecule, and (E) an inorganic filler.