| 摘要 |
<p>A compound of formula (I) or a pharmaceutically acceptable salt or in vivo hydrolysable ester thereof: <CHEM> wherein R is phenyl, 4-hydroxyphenyl, 2- or 3-thienyl, cyclohexyl, cyclohexan-1-yl, cyclohexa-1,4-dien-1-yl, or 3,4-disubstituted phenyl wherein the substituents may be the same or different and are selected from chlorine, hydroxy and methoxy; and R<1> represents hydrogen, an alkyl, alkenyl, cycloalkyl or cycloalkenyl group, an optionally substituted phenyl, a cyclopropyl alkyl group, a hydroxy group optionally substituted by alkyl, alkenyl, cycloalkyl, phenyl or benzyl, an optionally substituted mercapto group, an alkylsulphenyl group, a free or substituted amino group, an optionally substituted piperazino or phenylalkylamino group, an acylamino group or an alkyl, aralkyl or arylsulphonyl amino group.</p> |
