| 摘要 |
<p>The invention relates to a compound having the formula
<CHEM>
where R represents hydrogen or (C1-C4) alkyl: where A represents chlorine or hydroxyl; and where B represents hydrogen, (C1-C4) alkyl, 7-coumarinyl, phosphono, phenyl, or phenyl substituted with amino, dimethylamino, hydroxyl, methoxyl, carboxyl, carboxymethyl, or 2-carboxyethenyl, which possesses depressant and/or antihypoxia activity. </p> |
