Streptogramin derivatives, preparation method and compositions containing same

摘要

Group B streptogramin derivatives of general formula (I) are disclosed: wherein Ra, Rb, Rc, Rd, R₁, R₂ and Y are as defined in the description, including preparation methods and compositions containing the same. Such derivatives are particularly useful as antimicrobial agents, optionally combined with at least one group A streptogramin derivative.