Abstract
A series of enmein-type derivatives were synthesized and assayed for their antimycobacterial effects. The structures of the synthesized compounds were established by 1H NMR, 13C NMR and mass spectral analysis. All the compounds were screened for their antimycobacterial properties against Mycobacterium phlei, Mycobacterium smegmatis and Mycobacterium marinum. Compounds 2, 6g and 6i were found to exhibit potent antimycobacterial activity against M. phlei at a concentration of 0.5μg/mL, which was comparable to that of positive drug streptomycin. Furthermore, five compounds were tested against Mycobacterium tuberculosis H37Rv based on the promising preliminary screening results. Among them, compound 10 showed potent activity with IC50 value of 17.1μg/mL against M. tuberculosis H37Rv strain. Thus, compound 10 could emerge as a promising lead for further research work.
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