Various 3,5‐(substituteddiphenyl)‐4,5‐dihydro‐pyrazole‐1‐carbothioic acid phenylamides were synthesized starting from substituted acetophenones. Structures of the compounds were confirmed on the basis of spectral data. The compounds were evaluated for their anticonvulsant and antidepressant activity. Interestingly, out of 26 compounds, four (3f, 3g, 3t, and 3u) were found to protect 100% of the animals
Syntheses, characterization and in vitro antiamoebic activity of new Pd(II) complexes with 1-N-substituted thiocarbamoyl-3,5-diphenyl-2-pyrazoline derivatives
作者:Asha Budakoti、Mohammad Abid、Amir Azam
DOI:10.1016/j.ejmech.2006.10.011
日期:2007.4
Reaction of neutral NS bidentate ligands, 1-N-substituted thiocarbamoyl-3,5-diphenyl-2-pyrazolines, isolated by cyclization of chalcone with N-4-substituted thiosemicarbazide of aromatic amines (1-8), with [Pd(DMSO)(2)Cl-2] (DMSO = dimethylsulfoxide) leads to the formation of new complexes of the type [Pd(L)Cl-2] (1a-8a). The structures of the compounds were elucidated by UV, IR, H-1 NMR, C-13 NMR and ESI-MS spectral data and thermogravimetric analysis and their purities were confirmed by elemental analyses. The antiamoebic activity of these complexes was evaluated by microdilution method against HM1:1MSS strain of Entameoba histolytica and the results were compared with the standard drug, metronidazole. Generally palladium complexes showed better activity than their corresponding ligands. Compound 3a showed better IC50 = 0.05 mu M as compared to metronidazole IC50 = 1.82 mu M. (c) 2006 Published by Elsevier Masson SAS.