An antimycobacterial pleuromutilin analogue effective against dormant bacilli.

Bioorganic & Medicinal Chemistry
Maddie R LemieuxMichio Kurosu

Abstract

Pleuromutilin is a promising pharmacophore to design new antibacterial agents for Gram-positive bacteria. However, there are limited studies on the development of pleuromutilin analogues that inhibit growth of Mycobacterium tuberculosis (Mtb). In screening of our library of pleuromutilin derivatives, UT-800 (1) was identified to kill replicating- and non-replicating Mtb with the MIC values of 0.83 and 1.20 μg/mL, respectively. UT-800 also kills intracellular Mtb faster than rifampicin at 2× MIC concentrations. Pharmacokinetic studies indicate that 1 has an oral bioavailability with an average F-value of 27.6%. Pleuromutilin may have the potential to be developed into an orally administered anti-TB drug.

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Citations

Feb 23, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xiangyi ZuoYouzhi Tang

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