Abstract
Novel 2-heteroaryl-N-[4-(substituted aryl)thiazol-2-yl]propanamide derivatives (7a–7o) were synthesized and investigated for their antimicrobial activity. Among the tested compounds, 2-[(1H-Benzimidazol-2-yl)thio]-N-[4-(naphthalen-2-yl)thiazol-2-yl]propanamide (7e) and N-[4-(4-Chlorophenyl)thiazol-2-yl]-2-[(1-methyl-1H-tetrazol-5-yl)thio]propanamide (7f) showed the highest antibacterial activity, whereas 2-[Benzothiazol-2-ylthio]-N-[4-(4-chlorophenyl)thiazol-2-yl]propanamide (7i) and 2-[(1H-Benzimidazol-2-yl)thio]-N-[4-(4-chlorophenyl)thiazol-2-yl]propanamide (7j) displayed anticandidal effect against C. parapsilosis and C. glabrata. The cytotoxic activity of the compounds (7a–7o) was also tested against HL-60 human leukemia cells, THP-1 human monocytic leukemia cells, and NIH/3T3 mouse embryonic fibroblast cells. Compound N-[4-(4-Chlorophenyl)thiazol-2-yl]-2-[(1-methyl-1H-imidazol-2-yl)thio]propanamide (7 g) and compound 7j exhibited high cytotoxicity against HL-60; and compounds 2-[(1-Methyl-1H-imidazol-2-yl)thio]-N-[4-(naphthalen-2-yl)thiazol-2-yl]propanamide (7b), 7 g and N-[4-(4-Methoxyphenyl)thiazol-2-yl]-2-[(4-methyl-4H-1,2,4-triazol-3-yl)thio]propanamide (7 m) also had cytotoxic activity against THP-1 compared with standard drug with selective profile. Additionally, in silico physicochemical properties of the compounds were described.
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