The Regioselective Synthesis of Tepoxalin, 3-[5-(4-Chlorophenyl)-1-(4-methoxyphenyl)-3-pyrazolyl]-N-hydroxy-N-methylpropanamide and Related 1,5-Diarylpyrazole Anti-inflammatory Agents
The Regioselective Synthesis of Tepoxalin, 3-[5-(4-Chlorophenyl)-1-(4-methoxyphenyl)-3-pyrazolyl]-N-hydroxy-N-methylpropanamide and Related 1,5-Diarylpyrazole Anti-inflammatory Agents
Synthesis and properties of aryl-1,3-dioxo carboxylic acids
作者:William V. Murray、Michael P. Wachter
DOI:10.1021/jo00297a091
日期:1990.5
MURRAY, WILLIAM V.;WACHTER, MICHAEL P., J. ORG. CHEM., 55,(1990) N0, C. 3424-3426
作者:MURRAY, WILLIAM V.、WACHTER, MICHAEL P.
DOI:——
日期:——
US5242940A
申请人:——
公开号:US5242940A
公开(公告)日:1993-09-07
The Regioselective Synthesis of Tepoxalin, 3-[5-(4-Chlorophenyl)-1-(4-methoxyphenyl)-3-pyrazolyl]-<i>N</i>-hydroxy-<i>N</i>-methylpropanamide and Related 1,5-Diarylpyrazole Anti-inflammatory Agents
Tepoxalin, a potent anti-inflammatory agent, and its analogs can be synthesized by condensing an appropriate arylhydrazine hydrochloride and a 6-aryl-4,6-dioxohexanoic acid in alcohol with a base catalyst. These diarylpyrazolylpropanoic acids can be converted to their N-methylhydroxamic acids by generating the requisite acid chloride, and allowing it to react with N-methylhydroxylamine.