Branched aminoglycosides: Biochemical studies and antibacterial activity of neomycin B derivatives

The C5″-OH group in neomycin B was glycosylated with a variety of mono- and di-saccharides to probe the effect of introduction of additional binding elements on antibacterial activity and interaction with the aminoglycosides modifying enzyme APH(3′)-IIIa. The designed structures show antibacterial activity superior to that of neomycin B against pathogenic and resistant strains, while in parallel they demonstrate poor substrate activity with APH(3′)-IIIa.

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