Streptogramin derivatives, their preparation and compositions containing them
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United States of America Patent
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Jan 23, 2007
Grant Date -
Aug 7, 2003
app pub date -
Dec 6, 2002
filing date -
Jun 30, 1999
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Abstract
Group A streptogramin derivatives of general formula (I) in which: R.sub.1 represents a halogen atom or an azido or thiocyanato radical, R.sub.2 represents a hydrogen atom or a methyl or ethyl radical, R.sub.3 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 ##STR00001##
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