Substituted Nitrogen Heterocycles and Synthesis and Uses Thereof
申请人:Petasis Nicos A.
公开号:US20090247766A1
公开(公告)日:2009-10-01
The invention relates to a nitrogen heterocycle compound of formula 1:
Also disclosed are a method of synthesizing the compound and use of the compound for treating various diseases and conditions.
A rhodium-catalyzed highly stereoselective formal [2 + 4]-cycloaddition reaction of α-diazo pyrazoleamides and 2-aminophenyl ketones that produces 4-hydroxy-2-quinolinones in good yields with excellent diastereoselectivities has been developed. A pyrazolium ylide species that is generated from α-diazo pyrazoleamides is used as a C2 synthon for this cycloaddition. This protocol offers an efficient approach