New Compounds: Potential Antituberculous Agents I: Alkylaryl 4-Arylformamidinothiosemicarbazones
作者:P.K. Srivastava、J.S. Upadhyaya
DOI:10.1002/jps.2600660653
日期:1977.6
A series of alkylaryl4-arylformamidinothiosemicarbazones was synthesized for evaluation as antituberculousagents. The synthesis was effected by the condensation of different arylcyanamides with various thiosemicarbazones. The required intermediates also are described.
Synthesis and pharmacological screening of a large library of 1,3,4-thiadiazolines as innovative therapeutic tools for the treatment of prostate cancer and melanoma
作者:Celeste De Monte、Simone Carradori、Daniela Secci、Melissa D'Ascenzio、Paolo Guglielmi、Adriano Mollica、Stefania Morrone、Susanna Scarpa、Anna Maria Aglianò、Sabrina Giantulli、Ida Silvestri
DOI:10.1016/j.ejmech.2015.10.023
日期:2015.11
Antimitotic agents are widely used in cancer chemotherapy but the numerous side effects and the onset of resistance limit their clinical efficacy. Therefore, with the purpose of discovering more selective and efficient anticancer agents to be administered alone or in combination with traditional drugs, we synthesized a large library of 1,3,4-thiadiazoline analogues, maintaining the pharmacophoric structure of an antiproliferative compound known as K858: this is a new inhibitor of kinesin Eg5, able to induce the mitotic arrest in colorectal cancer cells and in xenograft ovarian cancer cells. We screened 103 compounds to assess their antiproliferative activity on PC3 prostate cancer cell line. Two derivatives, compounds 32 (corresponding to K858) and 33, have shown to be the most effective against prostate tumor cells and also towards two melanoma cell lines (SK-MEL-5 and SK-MEL-28) at low micromolar concentrations, confirming the pharmacological activity of this scaffold and revealing the potential role of 1,3,4-thiadiazolines in the management of cancer. (C) 2015 Elsevier Masson SAS. All rights reserved.
Investigations on the 2-thiazolylhydrazyne scaffold: Synthesis and molecular modeling of selective human monoamine oxidase inhibitors
A new series of [4-(3-methoxyphenyl)-thiazol-2-yl]hydrazyne derivatives were synthesized in good yield (71-99%) and characterized by elemental analysis and H-1 NMR studies. The compounds were assayed for their in vitro human monoamine oxidase (hMAO) inhibitory activity and selectivity and most of them showed IC50 values in the nanomolar range, thus demonstrating our interest in this privileged scaffold. The most active and selective derivative (20), bearing a pyridine moiety on the C=N, displayed IC50 = 3.81 +/- 0.12 nM and selectivity ratio = 119 toward hMAO-B. Molecular modeling studies were carried out on recent and high resolution hMAO-A and hMAO-B crystallographic structures to better justify the enzyme-inhibitor interaction toward hMAO isoforms and to explain the structure-activity relationship of this kind of inhibitors. (C) 2010 Elsevier Ltd. All rights reserved.
El-Metwally, Amira M., Egyptian Journal of Chemistry, 2011, vol. 54, # 1, p. 129 - 139