A New Class of Linezolid-Based Molecules as Potential Antimicrobial and Antitubercular Agents: A Rational Approach

A total of 19 linezolid-based novel molecules (6 a–d, 8 a–d and 10 a–k) were synthesized by utilizing a simple and convenient synthetic method. Structures of all the novel derivatives were established by ¹H, ¹³C NMR, FT-IR and mass spectroscopic methods. In addition, structural elucidation of some representative compounds by ¹⁹F, 2D NMR and single crystal X-ray experiment's (6 d and 8 b) further confirmed the structures of the desired compounds. All the final compounds were evaluated for their in vitro antitubercular (Mycobacterium tuberculosis H₃₇RV strain), antibacterial (S. aureus, B. subtilis, E. coli and P. aeruginosa) and antifungal (C. neoformans, C. albicans and A. niger) activities. The docking study of most active compounds were also performed towards 50S ribosomal unit of Haloarcula marismortui. The Lipinski's rule of five and significant ADME pharmacokinetic parameters were also analysed indicating potential to develop good oral antimicrobial and antitubercular drug candidates.