Authors Reddyrajula, R; Dalimba, U in PERGAMON-ELSEVIER SCIENCE LTD published article about ANTI-TUBERCULAR ACTIVITY; DESIGN; HYBRIDS; 1,2,3-TRIAZOLE; HYBRIDIZATION; ANTIMYCOBACTERIAL; DIARYLQUINOLINE in [Reddyrajula, Rajkumar; Dalimba, Udayakumar] Natl Inst Technol Karnataka, Dept Chem, Organ Chem Lab, Mangalore 575025, India in 2020, Cited 38. HPLC of Formula: C5H4N2O2. The Name is Pyrazine-2-carboxylic acid. Through research, I have a further understanding and discovery of 98-97-5
Tuberculosis remains as a major public health risk which causes the highest mortality rate globally and an improved regimen is required to treat the drug-resistant strains. Pyrazinamide is a first-line antitubercular drug used in combination therapy with other anti-TB drugs. Herein, we describe the modification of pyrazinamide structure using bioisosterism and rational approaches by incorporating the 1,2,3-triazole moiety. Three sets of pyrazine-1,2,3-triazoles (3a-o, 5a-o and 9a-l) are designed, synthesized and evaluated for their in vitro inhibitory potency against mycobacterium tuberculosis H(37)Rv. The pyrazine-1,2,3-triazoles synthesized through the bioisosteric modification displayed improved activity as compared to rationally modified pyrazine-1,2,3-triazoles. Among 42 title compounds, seven derivatives demonstrated significant anti-tubercular activity with the MIC of 1.56 mu g/mL, which are two-fold more potent than the parent compound pyrazinamide. Further, the synthesized pyrazinamide analogs demonstrated moderate inhibition activity against several bacterial strains and possessed an acceptable in vitro cytotoxicity profile as well. Additionally, the activity profile of pyrazine-1,2,3-triazoles was validated by performing the molecular docking studies against the Inh A enzyme. Furthermore, in silico ADME prediction revealed good oral bioavailability for the potent molecules.
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Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem