Certain 5-alkyl-2arylaminophenylacetic acids and derivatives
申请人:——
公开号:US20020013369A1
公开(公告)日:2002-01-31
Disclosed are the compounds of formula I
1
wherein R is methyl or ethyl; R
1
is chloro or fluoro; R
2
is hydrogen or fluoro; R
3
is hydrogen, fluoro, chloro, methyl, ethyl, methoxy, ethoxy or hydroxy; R
4
is hydrogen or fluoro; and R
5
is chloro, fluoro, trifluoromethyl or methyl; and pharmaceutically acceptable salts thereof, as selective COX-2 cyclooxygenase inhibitors; and pharmaceutically acceptable prodrug esters thereof.