Syntheses of Siderophore-Drug Conjugates Using a Convergent Thiol-Maleimide System

[摘要]：Three siderophore-drug conjugates (sideromycins) were synthesized by preparation of a maleimide linked derivative of the siderophore desferrioxamine B and reacting the corresponding Ga3+-complex with freshly prepared thiol-containing antibiotics: loracarbef, ciprofloxacin, and nadifloxacin. The conjugates and their synthetic precursors were tested against a broad panel of bacteria and were found to display Gram-positive selective, growth inhibitory activity (mu M), indicating that this approach is suitable for the convergent syntheses and screening of novel sideromycins.

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