| 摘要 |
<p>A compound offormula (I) or a pharmaceutically acceptable salt or in vivo hydrolysable ester thereof:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="44" wi="75" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein R is phenyl 4-hydroxy phenyl, or a 5- 6- membered heterocyclic ring containing up to three heteroatoms selected from oxygen, sulphur or nitrogen, optionally substituted with hydroxy, amino, halogen or C<Sub>1-6</Sub> alkoxy;
<UnorderedLists id="ula01" listStyle="none"><ListItem>R<Sup>1</Sup> represents hydrogen or C<Sub>1-6</Sub> alkyl;</ListItem><ListItem>R<Sup>2</Sup> and R<Sup>3</Sup> are the same or different and represent hydrogen, C<Sub>1-6</Sub>alkyl, halogen, amino, hydroxy, or C<Sub>1-6</Sub> alkoxy.</ListItem></UnorderedLists></p><p>Their preparation and use is described.</p> |
