The present invention provides compounds of the formula: ##STR1## and pharmaceutically acceptable salts thereof.
本发明提供了以下式的化合物:##STR1##及其药学上可接受的盐。
Silver-Catalyzed Late-Stage Fluorination
作者:Pingping Tang、Takeru Furuya、Tobias Ritter
DOI:10.1021/ja105834t
日期:2010.9.1
Carbon-fluorine bond formation by transition metal catalysis is difficult, and only a few methods for the synthesis of aryl fluorides have been developed. All reported transition-metal-catalyzed fluorination reactions for the synthesis of functionalized arenes are based on palladium. Here we present silver catalysis for carbon-fluorine bond formation. Our report is the first example of the use of the transition metal silver to form carbon-heteroatom bonds by cross-coupling catalysis. The functional group tolerance and substrate scope presented here have not been demonstrated for any other fluorination reaction to date.
Fused pyridine derivatives
申请人:Eisai Co., Ltd.
公开号:US06340759B1
公开(公告)日:2002-01-22
The present provides a condensed pyridine compound (I) represented by the following formula:
(wherein, R2 represents
ring A represents benzene ring, pyridine ring, thiophene ring or furan ring; and
B represents
its pharmaceutically acceptable salt or hydrates thereof, which is a clinically useful medicament having a serotonin antagonism, in particular, that for treating, ameliorating or preventing spastic paralysis or central muscle relaxants for ameliorating myotonia.
Copper-Mediated Oxidative Fluorination of Aryl Stannanes with Fluoride
作者:Raymond F. Gamache、Christopher Waldmann、Jennifer M. Murphy
DOI:10.1021/acs.orglett.6b02125
日期:2016.9.16
A regiospecific method for the oxidative fluorination of aryl stannanes using tetrabutylammonium triphenyldifluorosilicate (TBAT) and copper(II) triflate is described. This reaction is robust, uses readily available reagents, and proceeds via a stepwise protocol under mild conditions (60 °C, 3.2 h). Broad functional group tolerance, including arenes containing protic and nucleophilic groups, is demonstrated