| 摘要 |
This invention relates to a purified form of streptogramins, having of a combination of one or more group B components of streptogramins, of general formula: <IMAGE> in which A1 is a radical of general formula: <IMAGE> or <IMAGE> for which R' is H or OH and Y is H, a methylamino radical or a dimethylamino radical, R is an ethyl radical or, when R' is H, R can also represent-CH3, and R1 and R2 are H, or alternatively A1 is a radical of formula: <IMAGE> R is an isobutyl radical, and R1 is OH and R2 is -CH3, and one or more group A minority components of streptogramins, of general formula: <IMAGE> in which R'' is H or a methyl or ethyl radical, in the state of cocrystallizate, of a coprecipitate or of a physical mixture of the powders.
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