1,3-Thiazolidin-4-one derivatives bearing indole and bi-pyrimidine nucleuses (1–12) was designed and analyzed computationally for bioactivity. The synthesized compounds were characterized using FTIR, NMR and Mass Spectroscopy. The compounds (1–12) were then assessed for antibacterial therapeutic effects against the microbes [S. aureus (ATCC-25923), S. epidermidis (ATCC-29887),E. coli (ATCC-25922), and P. mirabilis (ATCC-25933)] using disk diffusion methods. The percent viability of the cells was analyzed by MTT against HepG2 cells to observe the cytotoxicity. Additionally, the molecular docking was carried out for the compounds (1–12) against the receptor GlcN-6P to assess the extent of H-bonding and the binding affinities. [ABSTRACT FROM AUTHOR]