Monitoring the DNA by ruthenium complexes of heterocyclic N,S-donor ligands and evaluation of biological activities
摘要:
Neutral N,S-donor bidentate ligands have been synthesized and characterized by NMR and IR spectroscopic techniques. The ligands have been used to synthesized ruthenium(II) complexes ([Ru(L-1-L-6)PPh3)(2)Cl-2]) and ruthenium(III) complexes ([Ru(L-1-L-6)PPh3)Cl-3]). Synthesized complexes have been characterized using elemental analysis, UV-Vis spectroscopy, magnetic measurements, LC-MS, and IR spectroscopy. Broth dilution technique was used to investigate antibacterial activity against two Gram-positive and three Gram-negative microorganisms and results show that all complexes are more potent than the respective ligands. UV-Vis absorption titration and viscosity measurements have been carried out to investigate the binding mode and binding strength of complexes with herring sperm DNA. The quantitative binding strength (K (b)) of the complexes was found in the range of 0.521 x 10(5)-2.94 x 10(5) M-1 and indicate intercalative mode of binding. Gel electrophoresis study was carried out to study the cleavage of pUC19 supercoiled DNA. DNA nuclease activity data for the complexes are found higher than respective ligands and metal salt. Brine shrimp bioassay was carried out to perform cytotoxicity study. IC50 values of the complexes were found in the range of 5.69 +/- 1.06-14.62 +/- 0.87 mu g cm(-3).
Synthesis, characterization of 4,6-disubstituted aminopyrimidines and their sulphonamide derivatives as anti-amoebic agents
作者:Shadab Miyan Siddiqui、Amir Azam
DOI:10.1007/s00044-013-0877-9
日期:2014.6
histolytica. In vitro anti-amoebicactivity was performed by microdilution method and the results were compared with standard drug metronidazole. The results revealed that sulphonamide derivatives (1–20) showed better activity than 4,6-disubstituted aminopyrimidines (1b–10b). 5 pyrimidine and 12 sulphonamide derivatives were better inhibitors of the growth of E. histolytica than the reference drug metronidazole
Popat; Nimavat; Kachhadia, Journal of the Indian Chemical Society, 2003, vol. 80, # 7, p. 707 - 708
作者:Popat、Nimavat、Kachhadia、Joshi
DOI:——
日期:——
Synthesis and spectral analysis of novel 3-(4,6-diarylpyrimidin-2-yl)-2-phenylthiazolidin-4-ones
作者:M. Gopalakrishnan、J. Thanusu、V. Kanagarajan
DOI:10.1007/s10593-010-0462-9
日期:2009.12
Novel 3-(4,6-diarylpyrimidin-2-yl)-2-phenylthiazolidin-4-ones are synthesized by the multicomponent cyclocondensation reaction of the appropriate 2-amino-4,6-diarylpyrimidines, benzaldehyde, and thioglycolic acid catalyzed by dicyclohexylcarbodiimide. The synthesized compounds have been characterized by melting point, elemental analysis, MS, FT-IR, H-1 and (13) NMR spectroscopic data.
Miquel,J.F., Bulletin de la Societe Chimique de France, 1961, p. 1369 - 1376
作者:Miquel,J.F.
DOI:——
日期:——
Annapoorna; Prasad Rao; Sethuram, Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 2002, vol. 41, # 7, p. 1341 - 1345