| 摘要 |
<p>A compound of formula (I) or a pharmaceutically acceptable salt or in vivo hydrolysable ester thereof: <CHEM> wherein R<1> is hydrogen or C1-6 alkylcarbonyl or C1-6 alkoxycarbonyl; R<2> is hydrogen, halogen, hydroxy, C1-6 alkoxy, nitro, amino, C1-6 alkyl, C1-6 haloalkyl, C1-6 alkylcarbonyloxy, C1-6 alkyl sulphonylamino, carboxy, cyano, or C1-6 alkoxycarbonyl; R<3> is halogen, hydroxy, C1-6 alkoxy, nitro, amino, C1-6 alkyl, C1-6 haloalkyl, C1-6 alkycarbonyloxy, or C1-6 alkyl sulphonylamino, carboxy, cyano, or C1-6 alkyloxycarbonyl; a process for the preparation of such compounds and pharmaceutical compositions comprising them.</p> |
