Journal
BIOMEDICINES
Volume 11, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/biomedicines11071975
Keywords
anti-tubercular agents; DprE1 inhibitor; structure activity relationship; in vivo activity
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Compound 37, an analogue of benzothiazinone (BTZ), inhibits the essential enzyme DprE1 and shows improved solubility and bioavailability compared to the lead compound. It exhibits bactericidal activity against Mycobacterium tuberculosis (Mtb) in an acute infection mouse model.
Tuberculosis (TB) is a leading infectious disease with serious antibiotic resistance. The benzothiazinone (BTZ) scaffold PBTZ169 kills Mycobacterium tuberculosis (Mtb) through the inhibition of the essential cell wall enzyme decaprenylphosphoryl-& beta;-D-ribose 2'-oxidase (DprE1). PBTZ169 shows anti-TB potential in animal models and pilot clinical tests. Although highly potent, the BTZ type DprE1 inhibitors in general show extremely low aqueous solubility, which adversely affects the drug-like properties. To improve the compounds physicochemical properties, we generated a series of BTZ analogues. Several optimized compounds had MIC values against Mtb lower than 0.01 & mu;M. The representative compound 37 displays improved solubility and bioavailability compared to the lead compound. Additionally, compound 37 shows Mtb-killing ability in an acute infection mouse model.
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