Synthesis and Characterization of Anguibactin To Reveal Its Competence To Function as a Thermally Stable Surrogate Siderophore for a Gram-Negative Pathogen, Acinetobacter baumannii

Total synthesis of anguibactin was accomplished for the first time, and the following biochemical characterizations allowed for the determination of its Fe(III) binding mode as well as the demonstration of its iron delivery capability for Acinetobacter baumannii. These properties, in addition to the thermal stability over acinetobactin, render anguibactin as a competent surrogate siderophore that can be useful for the future development of a siderophore-based antibiotic delivery system against A. baumannii.