| 摘要 |
The new compounds are compounds of formula (I) <CHEM> and its tautomer and the pharmaceutically acceptable salts thereof, wherein R<1> and R<2> are the same or different and are hydrogen, alkyl, cycloalkyl, alkenyl, alkynyl, aryl; alkyl substituted by cycloalkyl, aryl or heterocyclic radical; R<3> is hydrogen, alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, acyloxyalkyl, oxoalkyl, aryl; alkyl substituted by cycloalkyl, cycloalkenyl, aryl, hydroxy, cyano, halo or heterocyclic radical: -alkyl-X-CnH2n-1 wherein X is O,S,S<+>-O<->, SO2 or -N-CpH2p-1; -(CH2)qC(O)NR<6>R<7> or -(CH2) C(O)OR<8>; R<4> is hydrogen, alkyl, aryl, a heterocyclic radical; or alkyl substituted by cycloalkyl aryl or a heterocyclic radical, R<5> is hydrogen acyl, or alkyl. These compounds are useful as antiinflammatory agents for treating inflammatory conditions such as arthritis, spondylitis, and tendonitis in mammals. |
