Synthesis and biological evaluation of 5,7-diaryl-4,4-dimethyl-4,5,6,7-tetrahydropyridino[3,4-d]-1,2,3-thiadiazoles
作者:M. Gopalakrishnan、J. Thanusu、V. Kanagarajan
DOI:10.1007/s00044-007-9051-6
日期:2007.12
New 5,7-diaryl-4,4-dimethyl-4,5,6,7-tetrahydropyridino[3,4-d]-1,2,3-thiadiazoles 23-27 are synthesized, characterized by melting point, elemental analysis, magnetic spectroscopy (MS), Fourier-transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR)(H-1 and C-13) spectra and evaluated for their in vitro antibacterial and antifungal activities. Compounds 23-27 are more potent against Gram-positive bacterial strains, namely Staphylococcus aureus and beta-Haemolytic streptococcus. However compounds 23-27 possess potent activity against Klebsiella pneumonia, a Gram-negative bacterial strain, compared to the standard drug used, ciprofloxacin. In general, all the synthesized compounds exert a wide range of modest in vitro antifungal activity against Rhizopus and Microsporum gypsuem than the standard drug, fluconazole.