학술논문
Streptogramin derivatives, their preparation and compositions containing them
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Patent
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Abstract
Group A streptogramin derivatives of general formula (I) in which: R1 represents a halogen atom or an azido or thiocyanato radical, R2 represents a hydrogen atom or a methyl or ethyl radical, R3 represents a hydrogen atom, or the residue of an aliphatic, cycloaliphatic, aromatic, araliphatic, heterocyclic or heterocyclylaliphatic ester which may be substituted, and the bond --- represents a single bond (stereochemistry 27R) or a double bond, as well as its salts when they exist [chemical expression included]