NOVEL PIPERAZINE DERIVATIVES AS INHIBITORS OF STEAROYL-CoA DESATURASE
申请人:Sundaresan Kumar
公开号:US20090239810A1
公开(公告)日:2009-09-24
The present invention relates to piperidine derivatives that act as inhibitors of stearoyl-CoA desaturase. The invention also relates to methods of preparing the compounds, compositions containing the compounds, and to methods of treatment using the compounds.
Piperazine derivatives as inhibitors of stearoyl-CoA desaturase
申请人:Forest Laboratories Holdings Limited
公开号:US07842696B2
公开(公告)日:2010-11-30
The present invention relates to piperazine derivatives that act as inhibitors of stearoyl-CoA desaturase. The invention also relates to methods of preparing the compounds, compositions containing the compounds, and to methods of treatment using the compounds.
Piperidine derivatives as inhibitors of stearoyl-CoA desaturase
申请人:——
公开号:US08129376B2
公开(公告)日:2012-03-06
The present invention relates to piperidine derivatives that act as inhibitors of stearoyl-CoA desaturase. The invention also relates to methods of preparing the compounds, compositions containing the compounds, and to methods of treatment using the compounds.
A general procedure for the synthesis of 4-aryl-1H-pyrazoles by the Suzuki-Miyaura cross coupling reaction between 4-bromo-1H-1-tritylpyrazole and commercially available arylboronic acids was developed. Using this procedure, a direct synthesis of 4-aryl-1H-pyrazoles possessing functional groups, such as hydroxyl, nitro, and amino groups, on the aryl ring was realized. Those molecules could not be prepared by our previous synthesis of 4-aryl-1H-pyrazoles via the Kumada cross coupling reaction.
Synthesis of 4-Arylpyrazoles via PdCl2(dppf)-Catalyzed Cross Coupling Reaction with Grignard Reagents
4-Aryl-1-tritylpyrazoles were prepared from the cross coupling reaction of aryl Grignard reagents with 4-bromo-1-tritylpyrazoles in the presence of 0.2 mo1% PdCl2(dppf) as catalyst. To deprotect the trityl group, 4-phenyl-1-tritylpyrazole was reacted with TFA to produce 4-arylpyrazole in quantitative yield.