In silico Molecular Docking and ADME Studies of 1 3,4-Thiadiazole Derivatives in Relation to in vitro PON1 Activity

WOS: 000460882500003PubMed: 29773067Background: Paraoxonase 1 (PON1) is a paraoxonase, arylesterase and lactonase associated with protection of lipoproteins and cell membranes against oxidative modification. Objective: Based on antioxidative properties of PON1 and significance of 1,3,4-thiadiazoles in pharmaceutical chemistry, herein we aimed to evaluate the potentials of 1,3,4-thiadiazole derivatives as PON1 activators. Methods: 2-[[5-(2,4-Difluoro/dichlorophenylamino)-1,3,4-thiadiazol-2-yl]thio]acetophenone derivatives (1-18) were in vitro evaluated for their activator effects on PON1 which was purified using ammonium sulfate precipitation (60-80%) and DEAE-Sephadex anion exchange chromatography. Molecular docking studies were performed for the detection of affinities of all compounds to the active site of PON1. Moreover, Absorption, Distribution, Metabolism and Excretion (ADME) properties of all compounds were also in silico predicted. In silico molecular docking and ADME studies were carried out according to modules of Schrodinger's Maestro molecular modeling package. Results: All compounds, particularly compounds 10, 13 and 17, were determined as promising PON1 activators and apart from compound 1, all of them were detected in the active site of PON1. Besides, ADME results indicated that all compounds were potential orally bioavailable drug-like molecules. Conclusion: PON1 activators, compounds 10, 13 and 17 stand out as potential drug candidates for further antioxidant studies and these compounds can be investigated for their therapeutic effects in many disorders such as atherosclerosis, diabetes mellitus, obesity, chronic liver inflammation and many more

BENZODİOKSOL HALKASI TAŞIYAN PİRAZOLİN TÜREVLERİNİN SENTEZİ VE YENİ ANTİMİKROBİYAL AJANLAR OLARAK DEĞERLENDİRİLMESİ

Bu çalışmada, 1-(kloroasetil)-3-(2-tiyenil)-5-(3,4-metilendioksifenil)-2-pirazolinin N,N-disübstitüe ditiyokarbamik asitler ile reaksiyonuyla yeni pirazolin türevleri sentezlendi. Bileşikler, broth mikrodilüsyon yöntemi kullanılarak patojenik bakterilere ve mayalara karşı inhibitör etkileri için araştırıldı. Bileşiklerin NIH/3T3 fare embriyonik fibroblast hücre dizisine karşı sitotoksik etkilerini saptamak için MTT deneyi gerçekleştirildi. Referans maddeler ile kıyaslandığında test edilen bileşikler arasında, 1-[[(4-(4-florofenil)piperazin-1-il)tiyokarbamoiltiyo]asetil]-3-(2-tiyenil)-5(3,4-metilendioksifenil)-2-pirazolin (2) Klebsiella pneumoniae, Pseudomonas aeruginosa, Escherichia coli ve Candida parapsilosis mikroorganizmaları üzerindeki dikkate değer inhibitör etkilerine bağlı olarak en umut verici antimikrobiyal ajan olarak bulundu. Bileşik 2, NIH/3T3 hücre dizisine karşı herhangi bir toksisiteye neden olmadı. Bu sonuç, bileşik 2’nin antimikrobiyal etkisinin seçici olduğunu gösterd

Synthesis of some new hydrazone derivatives containing benzothiazole moiety

Hydrazones are important classes of compounds found in many synthetic products. Due to their importance in synthetic chemistry, the present article reports the synthesis of a new series of ten compounds based on the coupling of 2-[2(3H)-benzothiazolone-3-yl]acetylhydrazine and 2-(1,3- benzothiazol-2-yl)sulphanylacetylhydrazine with different aldehydes. The structures of the synthesized compounds were confirmed by elemental analyses, IR, 1H-NMR, 13C-NMR and FAB+-MS spectral data

Investigation of the inhibitory effects of isoindoline-1,3-dion derivatives on hCA-I and hCA-II enzyme activities

WOS: 000487932000041Inhibition of carbonic anhydrase (CA) has emerged as a promising approach for the treatment of a variety of diseases such as glaucoma, epilepsy, obesity and cancer. As a result, the design of CA inhibitors (CAIs) is an outstanding field of medicinal chemistry. Due to the therapeutic potential of isoindoline-1,3-diones as CAIs, herein hCA I and hCA II isozymes were purified from human erythrocytes using affinity chromatography and the inhibitory effects of a series of isoindoline-1,3-diones on hydratase activities of these isozymes were investigated. Among these compounds, compound 3a was found to be the most effective compound on hCA I with an IC50 value of 7.02 mu M, whereas compound 3c was the most potent compound on hCA II with an IC50 value of 6.39 mu M. Moreover, molecular docking studies were carried out for all compounds and acetazolamide (AAZ), the reference agent, in the active sites of hCA I and hCA II. Generally, the compounds showed high affinity through salt bridge formation and metal coordination with Zn2+ ion and pi-stacking interaction with His94 residue. According to in silico Absorption, Distribution, Metabolism and Excretion (ADME) studies, the pharmacokinetic parameters of all compounds were within the acceptable range. (C) 2019 Elsevier B.V. All rights reserved.Research Development Center of Ataturk University, Turkey [FAD-2018-6321]All studies related to the kinetics and inhibition studies of hCA I and hCA II enzyme in this study was financially supported by a the project numbered FAD-2018-6321 from Research Development Center of Ataturk University, Turkey

Synthesis and Biological Evaluation of New Quinoline-Based Thiazolyl Hydrazone Derivatives as Potent Antifungal and Anticancer Agents

WOS: 000423791300010Background: In medicinal chemistry, thiazoles have gained great importance in anti-fungal and anticancer drug design and development. Objectives: The aim of this study was to synthesize new quinoline-based thiazolyl hydrazone derivatives and evaluate their anticandidal and anticancer effects. Methods: New thiazolyl hydrazone derivatives were evaluated for their anticandidal effects using disc diffusion method. Ames MPF assay was carried out to determine the genotoxicity of the most effective antifungal derivative. MTT assay was also performed to assess the cytotoxic effects of the compounds on A549 human lung adenocarcinoma, HepG2 human hepatocellular carcinoma, MCF7 human breast adenocarcinoma and NIH/3T3 mouse embryonic fibroblast (healthy) cell lines. Results: 4-(4-Fluorophenyl)-2-(2-((quinolin-4-yl) methylene) hydrazinyl) thiazole (4) showed antifungal activity against Candida albicans and Candida krusei in the concentration of 1 mg/mL. In MTT and Ames MPF tests, it was determined that compound 4 did not show cytotoxic and genotoxic effects. MTT assay indicated that 4-(naphthalen-2-yl)-2-(2-((quinolin-4-yl) methylene) hydrazinyl) thiazole (10) showed more selective anticancer activity than cisplatin against A549 and MCF-7 cell lines. Besides, 4-(4-chlorophenyl)-2-(2-((quinolin-4-yl) methylene) hydrazinyl) thiazole (5) exhibited more selective anticancer activity than cisplatin against HepG2 cell line. Conclusion: Due to their high selectivity index, these compounds are considered as candidate compounds to participate in further research