摘要 |
<p>Group A streptogramin derivatives of general formula (I) in which: R<SUB>1 </SUB>represents a halogen atom or an azido or thiocyanato radical, R<SUB>2 </SUB>represents a hydrogen atom or a methyl or ethyl radical, R<SUB>3 </SUB>represents a hydrogen atom, or the residue of an aliphatic, cycloaliphatic, aromatic, araliphatic, heterocyclic or heterocyclylaliphatic ester which may be substituted, and the bond <U STYLE="SINGLE">--- represents a single bond (stereochemistry 27R) or a double bond, as well as its salts when they exist</p> |