Synthesis, experimental and theoretical investigations of some new 4,4′-bis(3-substituted-4,5-dihydro-1H-1,2,4-triazol-5-one-4-yl)diphenylmethane derivatives
5-dihydro-1H-1,2,4-triazol-5-one-4-yl)diphenylmethane derivatives 3 were synthesized in the cyclization reaction of semicarbazide derivatives 2 in alkaline solution. The synthesized compounds were characterized by elemental analyses, IR, 1H and 13C NMR, as well as MS. Molecular structure of compound 3a was determined by the X-ray analysis. Theoretical calculations (DFT/B3LYP/6-311G∗∗) of molecular structures
Anticancer Screening and Structure Activity Relationship Study of Some Semicarbazides and 1,2,4-Triazolin-5-ones
作者:Monika Pitucha、Jolanta Rzymowska
DOI:10.2174/157018012800673047
日期:2012.5.1
In this paper some semicarbazide and 1,2,4-triazolin-5-one derivatives are evaluated in vitro for their anticancer
activity towards human tumour cell line: ovary (TOV 112D), lung (A 549), breast (T47D) and uterus (Hela). Compounds
2-4 have been found to show the most effective in vitro activity against ovary cancer cell line. For compound 4 the growth
inhibition (80% and 70%) is observed in two concentrations (100 μg/ml and 50 μg/ml). The cytotoxic effect of examined
compounds seems to be dose-dependent and time-dependent. Compound 7 has GI=80% values towards the breast cancer
cell line in concentration of 100 μg/ml. Structure-activity relationship (SAR) studies are carried out for all the compounds
of the series. Compounds 2-4 show an activity profile that can be improved through medicinal chemistry strategies.
Synthesis and antinociceptive activity of 4,4′-bis(1-substituted-semicarbazidyl)diphenylmethane and 4,4′-bis(5-substituted-2,4-dihydro-3-oxo-3H-1,2,4-triazol-4-yl)diphenylmethane derivatives
In the reaction of 4,4'-diphenylmethane diisocyanate with carboxylic acid hydrazides, 4,4'-bis(1-substituted-semicarbazidyl) diphenylmethane derivatives were obtained. Depending on their chemical nature, cyclization of these compounds in alkaline medium led to the formation of two groups of compounds: bis(2,4-dihydro-3H-1,2,4-triazol-3-one) derivatives or carboxylic acids. The pharmacological effects of the selected compounds on the central nervous system in mice were investigated. Strong antinociceptive properties of some derivatives, at a wide range of doses, were observed.
Antioxidant Evaluation of Some Semicarbazide, 1,2,4-Triazolone and Pyrazolone Derivatives
作者:Monika Pitucha、Renata Nowak
DOI:10.2174/157018011797655188
日期:2011.12.1
heterocyclic ring 1-14 were synthesized as compounds with interesting pharmacological profiles. All were investigated in vitro for their antioxidant activity. Some compounds showed significant effect in the above assay. The most promising was a group of pyrazolone. The effect was dependent mainly on the substituent on the amide group. It was found that compounds 8 and 10 showed the highest antioxidant capacity