Pyridine and Benzoisothiazole Decorated Vanillin Chalcones: Synthesis, Antimicrobial, Antioxidant, Molecular Docking Study and ADMET Properties

2020 ◽  
Vol 17 (5) ◽  
pp. 367-381
Author(s):  
Pintu Pathare ◽  
Sunil Tekale ◽  
Rafique Shaikh ◽  
Manoj Damale ◽  
Jaiprakash Sangshetti ◽  
...  

Background: The search for new antimicrobial drugs is a never ending task due to microbial resistance to the existing drugs. Antioxidants are essential to prevent free radical reactions which lead to chronic diseases to human kind. Objective: The present studies were aimed to synthesis, characterization, antimicrobial and antioxidant activities of pyridine and benzoisothiazole decorated chalcones. Materials and Methods: FTIR spectra were recorded using KBr pellets on Shimadzu FT-IR spectrophotometer. 1H and 13C NMR spectra were recorded on Bruker 400 MHz spectrometer. Antimicrobial activity of the synthesized chalcones was found to be good against diffenet bacterial and fungal strains. Antioxidant activity was studied in terms of 2,2-diphenyl-1-picrylhydrazyl, hydroxyI and superoxide radical scavenging activities. Molecular docking was studied using Discovery Studio Visualizer Software, version 16 whereas Autodock Vina program was used to predict toxicity profile of the compounds using FAFDrugs2 predictor. Results: The compounds 5c, 5d & 6c showed good antioxidant activities. The insilico molecular docking study supports the experimental results and demonstrated that the chalcones 5d, 6a and 7a are the most active among the synthesized derivatives. Conclusion: Prediction of pharmacokinetic parameters and molecular docking studies suggest that the synthesized chalcones have good pharmacokinetic properties to act as lead molecules in the drug discovery process.

2019 ◽  
Vol 31 (11) ◽  
pp. 2448-2452
Author(s):  
Somashekara Bhadrachar ◽  
Giriyapura R. Vijayakumar ◽  
Kittappa M. Mahadevan ◽  
Thippeswamy Basavaraja

A series of 1,2,4,5-tetrasubstituted imidazoles (2a-g) were synthesized using 1,2-diketone, 1-naphthaldehyde, substituted aromatic amine and ammonium acetate in the presence of ceric ammonium nitrate as a catalyst. The synthesized compounds were characterized by FT-IR, 1H NMR, Mass spectra and explored for their antioxidant activity by DPPH free radical scavenging assay method. Among the synthesized compounds 2a, 2e and 2f exhibit good antioxidant activities. Molecular docking study was also been performed to know the possible interactions between the synthesized compound and antioxidant receptor 3MNG.


2020 ◽  
Vol 8 (1) ◽  
pp. 63-69
Author(s):  
S. Sathiyanarayanan ◽  
◽  
C.S. Venkatesan ◽  
S. Kabilan ◽  
◽  
...  

Regadenoson and Fosphenytoin are USFDA approved drugs which is used for coronary vasodilator and convulsive status epileptics respectively. It is quite natural that low levels of reagents or side products are present in the final active pharmaceutical ingredient (API) or drug product as impurities. Such impurities may have unwanted toxicities, including genotoxicity and carcinogenicity. Hence, it is important to study on impurities present in both the drugs. There are 9 impurities were identified from both drugs and studied pharmacokinetic properties using Qikprop module from Schrödinger software. From the 9 compounds of both the drug’s impurities, 5 compounds obey the Lipinski rule of five and the remaining compounds are having 1 to 3 penalties. All the compounds were subjected to molecular docking study with thermo stabilised HUMAN A2A Receptor with adenosine bound protein (PDB ID: 2YDO) for regadenoson impurities and fosphenytoin impurities were docked with Human GABA-A receptor alpha1-beta2-gamma2 subtype in complex with GABA and flumazenil, conformation A protein (PDB id: 6D6U). All the compounds are showed very good interaction with docked proteins. Further selected compound subjected to in vitro Antibacterial (Gram positive, Gram negative), Antifungal and Antioxidant (DPPH and FRAP) studies.


2021 ◽  
Vol 1 (1) ◽  
pp. 25-31
Author(s):  
Achal Mishra ◽  
Radhika Waghela

SARS-CoV-2, a new type of Coronavirus, has affected more millions of people worldwide. From the spread of this infection, many studies related to this virus and drug designing for the treatment have been started. Most of the studies target the SARS-CoV-2 main protease, spike protein of SASR-CoV-2, and some are targeting the human furin protease. In the current work, we chose the clinically used drug molecules remdesivir, favipiravir, lopinavir, hydroxychloroquine, and chloroquine onto the target protein SARS-CoV-2 main protease. Docking studies were performed using Arguslab, while Discovery Studio collected 2D and 3D pose views with the crystal structure of COVID-19 main protease in complex with an inhibitor N3 with PDB ID 6LU7. Computational studies reveal that all ligands provided good binding affinities towards the target protein. Among all the chosen drugs, lopinavir showed the highest docking score of -11.75 kcal/mol. The results from this molecular docking study encourage the use of lopinavir as the first-line treatment drug due to its highest binding affinity.


Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1983
Author(s):  
Minh Quan Pham ◽  
Thuy Huong Le Thi ◽  
Quoc Long Pham ◽  
Le Thi Le ◽  
Huy Toan Dao ◽  
...  

Human hepatocellular carcinoma (HCC), the most common type of liver cancer, represents the second most common cause of death from cancer worldwide. The high toxicity and side effects of some cancer chemotherapy drugs increase the demand for new anti-cancer drugs from natural products. Mortalin/mtHsp70, a stress response protein, has been reported to contribute to the process of carcinogenesis in several ways, including the inhibition of the transcriptional activation of p53. This study conducted a molecular docking study of 41 phyto triterpenes originated from Vietnamese plants for potential Mortalin inhibition activity. Nine compounds were considered as promising inhibitors based on the analysis of binding affinity and drug-like and pharmacokinetic properties.


Author(s):  
Bhavesh C Variya ◽  
Siddharth J. Modi ◽  
Jignasa K. Savjani ◽  
Snehal S. Patel

<p><strong>Objective: </strong>To perform molecular docking and pharmacokinetic prediction of gallic acid derivatives as Peroxisome proliferator-activated receptors-γ (PPAR-γ) agonist for the treatment of diabetes.</p><p><strong>Methods: </strong>Molecular docking study on gallic acid and different derivatives of gallic acid was performed using GOLD v5.2 software. In addition to this, all the derivatives were analysed for drug likeliness, Lipinski’s rule and ADMET (absorption, distribution, metabolism, excretion, and toxicity) properties using online tools like admet SAR, Molinspiration and Medchem designer.</p><p><strong>Results: </strong>Molecular docking studies reveals that SSP-12, SSP-13 and SSP-40 demonstrated significant binding to the PPAR-γ receptor with good Gold score fitness (73.11, 69.86 and 75.51 respectively) and relative ligand energy (-8.26,-8.33 and-7.82, respectively) as compared to standard drugs i.e. rosiglitazone and pioglitazone, (64.10 and 66.72) and (-4.30 and-2.47) respectively.</p><p><strong>Conclusion: </strong>The final results of molecular docking along with information gathered from pharmacokinetic parameters of gallic acid derivatives may be utilised further for the development of newer PPAR-γ agonists having anti-diabetic potential with better pharmacokinetic and pharmacodynamic profile.</p>


2020 ◽  
Vol 23 (6) ◽  
pp. 189-195
Author(s):  
Widia Wati ◽  
Gunawan Pamudji Widodo ◽  
Rina Herowati

Syzygium polyanthum leaf extract and Syzygium cumini herbs extract have been reported to have antidiabetic activity. This study aimed to predict the molecular target of chemical constituents of S. polyanthum and S. cumini as well as study their interactions with various macromolecular targets of an antidiabetic agent. Molecular docking of all ligands was studied using the Autodock Vina program in PyRx, and the results are presented as binding affinity values (kcal/mol) of ligand against the protein. PyMOL is used to visualize the 3D molecular of docked conformation and ligand-protein interactions. The predicted pharmacokinetic parameters were obtained by SwissADME. Delphinidin-3-gentiobioside and isoquercitrin are predicted to have good interaction with DPP-4 and α-glucosidase, respectively. However, they are predicted to have poor absorption properties. Quercetin and kaempferol are predicted to have good interaction with PTP1B and glucokinase and showed good pharmacokinetic properties.


2021 ◽  
Vol 14 (7) ◽  
pp. 685
Author(s):  
Sandra Amanda Kozieł ◽  
Monika Katarzyna Lesiów ◽  
Daria Wojtala ◽  
Edyta Dyguda-Kazimierowicz ◽  
Dariusz Bieńko ◽  
...  

A group of cytotoxic half-sandwich iridium(III) complexes with aminomethyl(diphenyl)phosphine derived from fluoroquinolone antibiotics exhibit the ability to (i) accumulate in the nucleus, (ii) induce apoptosis, (iii) activate caspase-3/7 activity, (iv) induce the changes in cell cycle leading to G2/M phase arrest, and (v) radicals generation. Herein, to elucidate the cytotoxic effects, we investigated the interaction of these complexes with DNA and serum proteins by gel electrophoresis, fluorescence spectroscopy, circular dichroism, and molecular docking studies. DNA binding experiments established that the complexes interact with DNA by moderate intercalation and predominance of minor groove binding without the capability to cause a double-strand cleavage. The molecular docking study confirmed two binding modes: minor groove binding and threading intercalation with the fluoroquinolone part of the molecule involved in pi stacking interactions and the Ir(III)-containing region positioned within the major or minor groove. Fluorescence spectroscopic data (HSA and apo-Tf titration), together with molecular docking, provided evidence that Ir(III) complexes can bind to the proteins in order to be transferred. All the compounds considered herein were found to bind to the tryptophan residues of HSA within site I (subdomain II A). Furthermore, Ir(III) complexes were found to dock within the apo-Tf binding site, including nearby tyrosine residues.


2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Joshua Oluwasegun Bamidele ◽  
George Oche Ambrose ◽  
Oluwaseun Suleiman Alakanse

AbstractHSP90 is observed as one of the copious molecular chaperones that play a key role in mediating appropriate folding, maturation, and firmness of many client proteins in cells. The expression rate of HSP90 in cancer cells is at a level of 2- to 10-fold higher than the 1- to 2-fold of its unstressed and healthy ones. To combat this, several inhibitors to HSP90 protein have been studied (such as geldanamycin and its derivative 17-AAG and 17-DMAG) and have shown some primary side effects including plague, nausea, vomiting, and liver toxicity, hence the search for the best-in-class inhibitor for this protein through in silico. This study is aimed at analyzing the inhibitory potency of oxypeucedanin-a furocoumarin derivations, which have been reported to have antipoliferative activity in human prostrate carcinoma DN145 cells, and three other drug candidates retrieved from the literature via computational docking studies. The results showed oxypeucedanin as the compound with the highest binding energy of −9.2 kcal/mol. The molecular docking study was carried out using PyRx, Auto Dock Vina option, and the target was validated to confirm the proper target and the docking procedure employed for this study.


Plants ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 208
Author(s):  
Ahlam Elwekeel ◽  
Dalia El Amir ◽  
Enas I. A. Mohamed ◽  
Elham Amin ◽  
Marwa H. A. Hassan ◽  
...  

The current study accentuates the significance of performing the multiplex approach of LC-HRESIMS, biological activity, and docking studies in drug discovery, taking into consideration a review of the literature. In this regard, the investigation of antioxidant and cytotoxic activities of Trigonella stellata collected from the Egyptian desert revealed a significant antioxidant capacity using DPPH with IC50 = 656.9 µg/mL and a moderate cytotoxicity against HepG2, MCF7, and CACO2, with IC50 values of 53.3, 48.3, and 55.8 µg/mL, respectively. The evaluation of total phenolic and flavonoid contents resulted in 32.8 mg GAE/g calculated as gallic acid equivalent and 5.6 mg RE/g calculated as rutin equivalent, respectively. Chemical profiling of T. stellata extract, using LC-HRESIMS analysis, revealed the presence of 15 metabolites, among which eleven compounds were detected for the first time in this species. Interestingly, in vitro testing of the antidiabetic activity of the alcoholic extract noted an α-glucosidase enzyme inhibitory activity (IC50 = 559.4 µg/mL) better than that of the standard Acarbose (IC50 = 799.9 µg/mL), in addition to a moderate inhibition of the α-amylase enzyme (IC50 = 0.77 µg/mL) compared to Acarbose (IC50 = 0.21 µg/mL). α-Glucosidase inhibition was also virtualized by binding interactions through the molecular docking study, presenting a high binding activity of six flavonoid glycosides, as well as the diterpenoid compound graecumoside A and the alkaloid fenugreekine. Taken together, the conglomeration of LC-HRESIMS, antidiabetic activity, and molecular docking studies shed light on T. stellata as a promising antidiabetic herb.


2020 ◽  
Vol 32 (6) ◽  
pp. 1482-1490
Author(s):  
Manju Mathew ◽  
Raja Chinnamanayakar ◽  
Ezhilarasi Muthuvel Ramanathan

A series of 1-(5-(5-(4-chlorophenyl)furan-2-yl)-4,5-dihyropyrazol-1-yl ethanone (5a-h) was synthesized through E-(3-(5-(4-chloro-phenyl)furan-2-yl)-1-phenylprop-2-en-1-one (3a-h) with hydrazine monohydrate and sodium acetate. Totally, eight compounds were synthesized and their structures were elucidated by infrared, 1H & 13C NMR, elemental analysis, antimicrobial studies, in silico molecular docking studies and also in silico ADME prediction. Antimicrobial studies of the synthesized compounds showed good to moderate activity against the all the stains compared with standard drugs. in silico Molecular docking study was carried out using bacterial protein and BC protein. Synthesized compounds (5a-h) showed good docking score compared with ciprofloxacin. Antimicrobial study was carried out for 4-chlorophenyl furfuran pyrazole derivatives (5a-h). The results of assessment of toxicities, drug likeness and drug score profiles of compounds (5a-j) are promising


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