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J Am Chem Soc. 2005 Jun 15;127(23):8278-9.

A simple structural-based approach to prevent aminoglycoside inactivation by bacterial defense proteins. Conformational restriction provides effective protection against neomycin-B nucleotidylation by ANT4.

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  • 1Instituto de Química Orgánica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain. iqoa110@iqog.csic.es


Herein, we describe how the conformational differences exhibited by aminoglycosides in the binding pockets of the ribosome and those enzymes involved in bacterial resistance can be exploited in the design of new antibiotic derivatives with improved activity in resistant strains. The simple modification shown in the figure, leading to the conformationally restricted 5, provides an effective protection against aminoglycoside inactivation by Staphylococcus aureus ANT4, both in vivo and in vitro.

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