| 摘要 |
<p>The present invention relates to compounds of general formula (I) wherein R?1 and R2¿, which may be the same or different, represent (C¿1?-C4)alkyl, and R?3¿ represents hydrogen, halogen, (C¿1?-C4)alkyl, or O-(C1-C4)alkyl, and in-vivo hydrolysable esters thereof with pharmaceutically acceptable acids. The present compounds are of value in the human and veterinary practice.</p> |
