Chalcone derivatives and their use to treat diseases
申请人:Ni Liming
公开号:US20060189549A1
公开(公告)日:2006-08-24
The invention relates to compounds, pharmaceutical compositions and methods of using compounds of the general formula
or its pharmaceutically acceptable salt or ester, wherein the substituents are defined in the application.
This invention is a novel methods of manufacturing chalcones that includes reacting a carbon-linked heteroaryl or heterocyclic substituted benzaldehyde with an acetophenone in a solvent or mixture of solvents in the presence of LiOMe. Also provided are new chalcones for the treatment of medical conditions.
Alkanenitriles having a heteroatom such as nitrogen, oxygen, and sulfur at the gamma-position are found to add across alkynes stereo- and regioselectively by nickel/Lewis acid catalysis to give highly substituted acrylonitriles. The heteroatom functionalities likely coordinate to the nickel center to make oxidative addition of the C-CN bonds of the alkyl cyanides kinetically favorable, forming a five-membered nickelacycle intermediate and, thus, preventing beta-hydride elimination to allow the alkylcyanation reaction.