Substituted 1-(4-aminophenyl)pyrazoles and their use as anti-inflammatory agents
申请人:Boehringer Ingelheim Pharmaceuticals, Inc.
公开号:US06506747B1
公开(公告)日:2003-01-14
1-(4-aminophenyl)pyrazoles optionally substituted on the 3- and 5-positions of the pyrazole ring and on the amino group at the 4-position of the phenyl ring are disclosed and described, which pyrazoles inhibit IL-2 production in T-lymphocytes.
Practical synthesis of 1,3-diaryl-5-alkylpyrazoles by a highly regioselective N-arylation of 3,5-disubstituted pyrazoles with 4-fluoronitrobenzene
作者:Xiao-jun Wang、Jonathan Tan、Karl Grozinger、Raj Betageri、Tom Kirrane、John R Proudfoot
DOI:10.1016/s0040-4039(00)00849-2
日期:2000.7
3-Aryl-5-alkylpyrazoles undergo a highlyregioselective arylation on N-1 atom with 4-fluoronitrobenzene in the presence of base to yield the corresponding 1-(4-nitrophenyl)pyrazoles.