Design, Synthesis and Biological Potential of 5-(2-Amino-6-(3/4-bromophenyl)pyrimidin-4-yl)benzene-1,3-diol Scaffolds as Promising Antimicrobial and Anticancer Agents

2019 ◽  
Vol 19 (10) ◽  
pp. 851-864 ◽  
Author(s):  
Sanjiv Kumar ◽  
Balasubramanian Narasimhan ◽  
Siong Meng Lim ◽  
Kalavathy Ramasamy ◽  
Vasudevan Mani ◽  
...  

Background: A series of 5-(2-amino-6-(3/4-bromophenyl)pyrimidin-4-yl)benzene-1,3-diol scaffolds was synthesized by Claisen-Schmidt condensation and characterized by NMR, IR, Mass and elemental analyses. Methods: The synthesized pyrimidine scaffolds were screened for their antimicrobial activity by tube dilution method as well for antiproliferative activity (human colorectal (HCT116) cancer cell line) by SRB assay. Results: The antimicrobial screening results demonstrated that compounds, k6, k12, k14 and k20 were found to be the most potent ones against selected microbial species. The anticancer screening results indicated that compounds, k8 and k14 displayed potent anticancer activity against cancer cell line (HCT116). Conclusion: Further, the molecular docking study carried to find out the interaction between active pyrimidine compounds with CDK-8 protein indicated that compound k14 showed best dock score with better potency within the ATP binding pocket and may be used as a lead for rational drug designing of the anticancer molecule.

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 708
Author(s):  
Islam H. El Azab ◽  
Hamdy S. El-Sheshtawy ◽  
Rania B. Bakr ◽  
Nadia A. A. Elkanzi

In an effort to improve and achieve biologically active anticancer agents, a novel series of 1,2,3-triazole-containing hybrids were designed and efficiently synthesized via the Cu-catalyzed azide-alkyne cycloaddition (CuAAC) reaction of substituted-arylazides with alkyne-functionalized pyrazole-[1,2,4]-triazole hybrids. The structure geometry of these new clicked 1,2,3-triazoles was explored by density functional theory (DFT) using the B3LYP/6-311++G(d,p) level; also, the potential activity of the compounds for light absorption was simulated by time-dependent DFT calculations (TD-DFT). The antitumor impacts of the newly synthesized compounds were in vitro estimated to be towards the human liver cancer cell line (HepG-2), the human colon cancer cell line (HCT-116), and human breast adenocarcinoma (MCF-7). Among the tested compounds, conjugate 7 was the most potent cytotoxic candidate towards HepG-2, HCT-116, and MCF-7, with IC50 = 12.22, 14.16, and 14.64 µM, respectively, in comparison to that exhibited by the standard drug doxorubicin (IC50 = 11.21, 12.46, and 13.45 µM). Finally, a molecular docking study was conducted within the epidermal growth factor receptor (EGFR) active site to suggest possible binding modes. Hence, it could conceivably be hypothesized that analogies 7, 6, and 5 could be considered as decent lead candidate compounds for anticancer agents.


Author(s):  
Heba M. Abo-salem ◽  
Khadiga M. Ahmed ◽  
Salwa El- Hallouty ◽  
Eslam R. El-sawy ◽  
Adel H. Mandour

<p><strong>Objective</strong>:<strong> </strong>The present work aimed to synthesize a new series of 1-methylsulphonyl-3-indolyl heterocycles and study their cytotoxic activity. In addition, we attempted to explore the mode of the interaction of anti-proliferative compounds with the active site of carbonic anhydrase IX (CA IX) theoretically <em>via</em> molecular docking study.</p><p><strong>Methods</strong>:<strong> </strong>Novel series of pyrazole, pyrimidine and triazole derivatives bearing 1-methylsulphonyl-1<em>H</em>-indole were prepared <em>via</em> a series of hetero cyclization reactions utilizing 3-(1-methylsulphonyl-1<em>H</em>-indol-3-yl)-1-(substituted phenyl)-1<em>H</em>-pyrazole-4-carboxaldehydes 3a-d and 3-chloro-3-(1-methylsulphonyl-1<em>H</em>-indol-3-yl)propenal (6) and evaluating their anti-proliferative activity. The structures of the newly synthesized compounds were confirmed by elemental analyses, IR, NMR and mass spectral data. In addition, molecular docking study of the most promising antiproliferative compounds against the active site of carbonic anhydrase IX (PDB ID: 4BCW) theoretically is discussed.</p><p><strong>Results</strong>:<strong> </strong>Compounds 5c, 7 and 12 revealed potent anti-proliferative effects against A-549 cancer cell line with IC<sub>50</sub> of 44.3, 17.2 and 38.7 µmol/l, respectively compared to the reference drug doxorubicin (IC<sub>50</sub> of 48.8 µmol/l). While compound <strong>5c</strong> was found to be highly active with IC<sub>50</sub> of 5.66 µmol/l against HCT-116 cancer cell line than doxorubicin (IC<sub>50</sub> of 65.00 µmol/l).</p><p><strong>Conclusion</strong>:<strong> </strong>Further work is recommended to confirm the inhibition of CA IX in a specific bioassay.</p>


2020 ◽  
Author(s):  
Harsh Kumar ◽  
Aakash Deep ◽  
Rakesh Kumar Marwaha

Abstract Background: Looking at the extensive range of biological potential of thiazolidine-2,4-dione (TZD) moiety, a new series of thiazolidine-2,4-dione analogues was synthesized. Different spectral techniques (1H-NMR, IR, MS etc.) were used to confirm the chemical structures of the synthesized analogues. These synthesized compounds were then screened for their antioxidant and antimicrobial potential.Results and discussion: The antimicrobial screening was carried out against selected strains of fungi and bacteria using serial tube dilution method. The antioxidant potential was assessed using stable 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging method. Further, the interaction between synthesized thiazolidine-2,4-dione compounds and DNA gyrase was explored using molecular docking studies. Various ADME parameters were also studied to evaluate the drug likeness of the synthesized compounds. Conclusion: In antimicrobial evaluation, the compounds 4, 9, 11, 12, 13, 15 and 16 displayed promising activity against selected strains of microbes. Antioxidant evaluation found compound 6 having IC50 = 9.18 μg/mL to be the most potent compound in the series. The molecular docking study revealed compounds 4 (dock score = -4.73) and 7 (dock score = -4.61) with decent docking score possess good interaction inside the ATP binding pocket and therefore can be used as lead structure for further optimizing into potent antimicrobial molecule.


2020 ◽  
Vol 16 (4) ◽  
pp. 419-431
Author(s):  
Kishore K. Valluri ◽  
Tejeswara R. Allaka ◽  
IV Kasi Viswanath ◽  
Nagaraju PVVS

Background: Many pyrazole piperazine derivatives are known to exhibit a wide range, thus being attractive for the drug design and synthesis of interesting class of widely studied heterocyclic compounds. It is therefore necessary to devote continuing effort for the identification and development of New Chemical Entities (NCEs) as potential antibacterial and anticancer agents to address serious health problems. Methods: A series of new compounds containing pyrazole ring linked to a piperazine hydrochloride moiety were synthesized and screened for their antibacterial activity, cytotoxicity of novel scaffolds are described by variation in therapeutic effects of parent molecule. The structure variants were characterized by using a blend of spectroscopic 1H NMR, 13C NMR, IR, Mass and chromatographic techniques. Results: When tested for in vitro antibacterial and anticancer activities, several of these compounds showed good activities. The target compounds 9b, 9a and 9e exhibited a high degree of anticancer activity against human colon cancer cell line Caco-2 and human breast cancer cell line MDAMB231. Further, 9a, 9b, 9d, and 9h showed better activity towards four medically relevant organisms; Staphylococcus aureus, Bacillus subtilis, Escherichia coli and Klebsiella Species compared to CPF. In the present investigation, cheminfomatics tools Molinspiration, 2003 and MolSoft, 2007 for the prediction of insilico molecular properties and drug likeness for the target compounds 9a-h was evaluated and positive results were observed. Conclusion: Our study revealed that the molecular framework presented here could be a useful template for the identification of novel small molecules as promising antibacterial/ anticancer agents.


Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2212
Author(s):  
Mohammad Shahidul Islam ◽  
M. Ali ◽  
Abdullah Mohammed Al-Majid ◽  
Abdullah Saleh Alamary ◽  
Saeed Alshahrani ◽  
...  

The Friedel–Crafts reaction between substituted indoles as nucleophiles with chalcones-based benzofuran and benzothiophene scaffolds was carried out by employing a highly efficient bimetallic iron–palladium catalyst system. This catalytic approach produced the desired bis-heteroaryl products with low catalyst loading, a simple procedure, and with acceptable yield. All synthesized indole scaffolds 3a–3s were initially evaluated for their cytotoxic effect against human fibroblast BJ cell lines and appeared to be non-cytotoxic. All non-cytotoxic compounds 3a–3s were then evaluated for their anticancer activities against cervical cancer HeLa, prostate cancer PC3, and breast cancer MCF-7 cell lines, in comparison to standard drug doxorubicin, with IC50 values 1.9 ± 0.4 µM, 0.9 ± 0.14 µM and 0.79 ± 0.05 µM, respectively, and appeared to be moderate to weak anticancer agents. Fluoro-substituted chalcone moiety-containing compounds, 3b appeared to be the most active member of the series against cervical HeLa (IC50 = 8.2 ± 0.2 µM) and breast MCF-7 cancer cell line (IC50 = 12.3 ± 0.04 µM), whereas 6-fluroindol-4-bromophenyl chalcone-containing compound 3e (IC50 = 7.8 ± 0.4 µM) appeared to be more active against PC3 prostate cancer cell line.


2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Vincenza Barresi ◽  
Carmela Bonaccorso ◽  
Domenico A. Cristaldi ◽  
Maria N. Modica ◽  
Nicolò Musso ◽  
...  

Recent drug discovery efforts are highly focused towards identification, design, and synthesis of small molecules as anticancer agents. With this aim, we recently designed and synthesized novel compounds with high efficacy and specificity for the treatment of breast tumors. Based on the obtained results, we constructed a Volsurf+ (VS+) model using a dataset of 59 compounds able to predict the in vitro antitumor activity against MCF-7 cancer cell line for new derivatives. In the present paper, in order to further verify the robustness of this model, we report the results of the projection of more than 150 known molecules and 9 newly synthesized compounds. We predict their activity versus MCF-7 cell line and experimentally verify the in silico results for some promising chosen molecules in two human breast cell lines, MCF-7 and MDA-MB-231.


2016 ◽  
Vol 11 (1) ◽  
pp. 1-8
Author(s):  
Manal M. Ramadan ◽  
Amr F. Mansour ◽  
Reda M. Fekry ◽  
Marwa T. Salem ◽  
Fathy M. Mahaya ◽  
...  

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