02099nas a2200205   4500008004100000022001500041245009900056210006900155260000900224300001700233490000600250520137800256100002601634700002001660700001901680700002701699700001801726700002401744856012501768       2018                        eng d  a 2365-654900aDesign, synthesis and biological screening of novel 1,3,4-oxadiazoles as antitubercular agents0 aDesign synthesis and biological screening of novel 134oxadiazole  c DEC  a 13304-133100 v33 aA series of novel 2,5-disubstitued 1,3,4-oxadiazole derivatives bearing 2,2-dimethyl-2,3-dihydrobenzofuran scaffold has been synthesized and screened for antitubercular activity. All the synthesized compounds were characterized by IR, H-1 NMR, C-13-NMR and Mass spectral study. The in vitro antitubercular activity of the synthesized compounds was evaluated against Mycobacterium tuberculosis H37Ra(ATCC 25177) strain. Among the synthesized compounds, four compound displayed good antitubercular activity IC50 values in low micro-gram range (<10 mu g/mL). The antitubercular data suggested that growth inhibition MTB can be imparted by the introduction of a 4- trifluoromethyl phenyl acetylene substituent. Specificity of these compounds was checked by screening them for their anti-bacterial activity against four bacterial strains (Gram-negative strains: E. coli, S. aureus; Gram-positive strains: P. aeruginosa and B. subtilis). None of the compound displayed antibacterial activity against any of the seleted strain. Molecular docking studies were carried out on InhA (FabI/ENR) which shows that the synthesized compounds bind at the catalytic site in a most favourable manner suggesting their potential as anti-mycobacterial agents. The research presented here was found to be adventitious for the development of new therapeutic agents against Mycobacterium infection.1 aTambe, Macchindra, S.1 aChoudhari, Amit1 aSarkar, Dhiman1 aSangshetti, Jaiprakash1 aPatil, Rajesh1 aGholap, Somnath, S.  uhttps://library.ncl.res.in/content/design-synthesis-and-biological-screening-novel-134-oxadiazoles-antitubercular-agents01926nas a2200313   4500008004100000022001400041245010800055210006900163260000800232300001200240490000700252520093700259653000601196653000601202653001701208653002001225653001701245653001801262653002201280100002601302700002401328700002501352700002201377700002301399700001901422700002001441700001901461856013201480       2019                        eng d  a0045-206800aDesign, synthesis and biological evaluation of (E)-5-styryl-1,2,4-oxadiazoles as anti-tubercular agents0 aDesign synthesis and biological evaluation of E5styryl124oxadiaz  cMAY  a507-5120 v863 a<p>Cinnamic acid and its derivatives are known for anti-tubercular activity. The present study reports the synthesis of cinnamic acid derivatives via bioisosteric replacement of terminal carboxylic acid with ``oxadiazole''. A series of cinnamic acid derivatives (styryl oxadiazoles) were designed and synthesized in good yields by reaction of substituted cinnamic acids (2, 15a-15s) with amidoximes. The synthesized styryl oxadiazoles were evaluated in vitro for anti-tubercular activity against Mycobacterium tuberculosis (Mtb) H37Ra strain. The structure-activity relationship (SAR) study has identified several compounds with mixed anti-tubercular profiles. The compound 32 displayed potent anti-tubercular activity (IC50= 0.045 mu g/mL). Molecular docking studies on mycobacterial enoyl-ACP reductase enzyme corroborated well with the experimental findings providing a platform for structure based hit-to-lead development.</p>
10a110a210a4-Oxadiazole10aAnti-tubercular10aBioisosteres10aCinnamic acid10aMolecular docking1 aUpare, Abhay, Atmaram1 aGadekar, Pradip, K.1 aSivaramakrishnan, H.1 aNaik, Nishigandha1 aKhedkar, Vijay, M.1 aSarkar, Dhiman1 aChoudhari, Amit1 aRoopan, Mohana  uhttps://library.ncl.res.in/content/design-synthesis-and-biological-evaluation-e-5-styryl-124-oxadiazoles-anti-tubercular-agents