1
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Climova A, Pivovarova E, Szczesio M, Gobis K, Ziembicka D, Korga-Plewko A, Kubik J, Iwan M, Antos-Bielska M, Krzyżowska M, Czylkowska A. Anticancer and antimicrobial activity of new copper (II) complexes. J Inorg Biochem 2023; 240:112108. [PMID: 36592510 DOI: 10.1016/j.jinorgbio.2022.112108] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 12/05/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
In this study, three new organic ligands N'-(benzylidene)-6-chloropyrazine-2-carbohydrazonamide (L1), 6-chloro-N'-(4-nitrobenzylidene)picolinohydrazonamide(L2), and N'-(benzylidene)-4-chloropicolinohydrazonamide (L3) and three copper coordination compounds (Cu(L1)Cl2, Cu(L2)Cl2 and Cu(L3)Cl2) based on them were synthesized. All obtained compounds were characterized using appropriate analytical techniques: elemental analysis (EA), thermogravimetric analysis (TG-DTG), Fourier transform infrared spectroscopy (FTIR) and flame-atomic absorption spectrometry (F-AAS). These methods of physicochemical analyses helped to assume that the complexation in three cases proceeds in a bidentate manner. The X-ray investigation confirmed the synthesis pathway and molecular structures for L1 and L3 ligands. The antimicrobial activity of the obtained compounds was then comprehensively investigated, where Cu(L3)Cl2 showed the strongest antibacterial properties against all tested bacteria (Pseudomonas aeruginosa, Staphylococcus aureus, Escherichia coli). LN229 human glioma cells and BJ human normal fibroblasts cells were treated with tested compounds and their cytotoxicity was evaluated with MTT test. The effect of complexing on antitumor activity has been investigated. The ligand L1 and its complex showed similar activity against normal cells while complexation increases toxicity against cancer cells in concentrations of 50 and 100 μM. For the one pair of ligand/complex compounds the apoptosis detection, cell cycle analysis and gene expression analysis (qRT-PCR) were performed. Cu(L1)Cl2 showed the stronger toxic effect in comparison with L1 due to the population of early apoptotic cells which revealed metabolic activity in MTT assay.
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Affiliation(s)
- Alina Climova
- Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland.
| | - Ekaterina Pivovarova
- Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland.
| | - Małgorzata Szczesio
- Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland.
| | - Katarzyna Gobis
- Department of Organic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, 107 Gen. Hallera Ave., 80-416 Gdańsk, Poland.
| | - Dagmara Ziembicka
- Department of Organic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, 107 Gen. Hallera Ave., 80-416 Gdańsk, Poland.
| | - Agnieszka Korga-Plewko
- Independent Medical Biology Unit, Faculty of Pharmacy, Medical University of Lublin, Jaczewskiego 8b, 20-093 Lublin, Poland.
| | - Joanna Kubik
- Independent Medical Biology Unit, Faculty of Pharmacy, Medical University of Lublin, Jaczewskiego 8b, 20-093 Lublin, Poland.
| | - Magdalena Iwan
- Department of Toxicology, Faculty of Pharmacy, Medical University of Lublin, Chodźki 8, 20-093 Lublin, Poland.
| | - Małgorzata Antos-Bielska
- Department of Nanobiology and Biomaterials, Military Institute of Hygiene and Epidemiology, Kozielska 4, 01-163, Warsaw, Poland.
| | - Małgorzata Krzyżowska
- Department of Nanobiology and Biomaterials, Military Institute of Hygiene and Epidemiology, Kozielska 4, 01-163, Warsaw, Poland
| | - Agnieszka Czylkowska
- Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland.
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2
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Evaluation of Neurotropic Activity and Molecular Docking Study of New Derivatives of pyrano[4″,3″:4',5']pyrido[3',2':4,5]thieno[3,2- d]pyrimidines on the Basis of pyrano[3,4- c]pyridines. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113380. [PMID: 35684318 PMCID: PMC9182472 DOI: 10.3390/molecules27113380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/17/2022] [Accepted: 05/18/2022] [Indexed: 11/20/2022]
Abstract
Background: Heterocyclic compounds and their fused analogs, which contain pharmacophore fragments such as pyridine, thiophene and pyrimidine rings, are of great interest due to their broad spectrum of biological activity. Chemical compounds containing two or more pharmacophore groups due to additional interactions with active receptor centers usually enhance biological activity and can even lead to a new type of activity. The search for new effective neurotropic drugs in the series of derivatives of heterocycles containing pharmacophore groups in organic, bioorganic and medical chemistry is a serious problem. Methods: Modern methodology of drugs involves synthesis, physicochemical study, molecular modeling and selection of active compounds through virtual screening and experimental evaluation of the biological activity of new chimeric compounds with pharmacophore fragments. For the synthesis of new compounds, classical organic methods were used and developed. For the evaluation of neurotropic activity of new synthesized compounds, some biological methods were used according to indicators characterizing anticonvulsant, sedative and antianxiety activity as well as side effects. For docking analysis, various soft ware packages and methods were used. Results: As a result of multistep reactions, 11 new, tri- and tetracyclic heterocyclic systems were obtained. The studied compounds exhibit protection against pentylenetetrazole (PTZ) seizures as well as some psychotropic effects. The biological assays evidenced that nine of the eleven studied compounds showed a high anticonvulsant activity by antagonism with pentylenetetrazole. The toxicity of the compounds is low, and they do not induce muscle relaxation in the studied doses. According to the study of psychotropic activity, it was found that the selected compounds have an activating behavior and anxiolytic effects on the “open field” and “elevated plus maze” (EPM) models. The data obtained indicate the anxiolytic (antianxiety) activity of the derivatives of tricyclic thieno[2,3-b]pyridines and tetracyclic pyridothieno[3,2-d]pyrimidin-8-ones, especially pronounced in compounds 3b–f and 4e. The studied compounds increase the latent time of first immobilization on the “forced swimming” (FS) model and exhibit antidepressant effects; compounds 3e and 3f especially exhibit these effects, similarly to diazepam. Docking studies revealed that compounds 3c and 4b bound tightly in the active site of γ-aminobutyric acid type A (GABAA) receptors with a value of the scoring function that estimates free energy of binding (∆G) at −10.0 ± 5 kcal/mol. Compound 4e showed the best affinity ((∆G) at −11.0 ± 0.54 kcal/mol) and seems to be an inhibitor of serotonin (SERT) transporter. Compounds 3c–f and 4e practically bound with the groove of T4L of 5HT_1A and blocked it completely, while the best affinity observed was in compound 3f ((∆G) at −9.3 ± 0.46 kcal/mol). Conclusions: The selected compounds have an anticonvulsant, activating behavior and anxiolytic effects and at the same time exhibit antidepressant effects.
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Ravula S, Bobbala RR, Kolli B. Synthesis of novel isoxazole functionalized pyrazolo[3,4‐
b
]pyridine derivatives; their anticancer activity. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3968] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Sampath Ravula
- Department of ChemistryGitam University Hyderabad Telangana India
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4
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Yoshida T, Oki H, Doi M, Fukuda S, Yuzuriha T, Tabata R, Ishimoto K, Kawahara K, Ohkubo T, Miyachi H, Doi T, Tachibana K. Structural Basis for PPARα Activation by 1H-pyrazolo-[3,4-b]pyridine Derivatives. Sci Rep 2020; 10:7623. [PMID: 32376995 PMCID: PMC7203124 DOI: 10.1038/s41598-020-64527-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/27/2020] [Indexed: 11/24/2022] Open
Abstract
Small-molecule agonism of peroxisome proliferator-activated receptor α (PPARα), a ligand-activated transcriptional factor involved in regulating fatty acid metabolism, is an important approach for treating dyslipidemia. Here, we determined the structures of the ligand-binding domain (LBD) of PPARα in complex with 1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid derivatives, which were recently identified as PPARα-selective activators with markedly different structures from those of the well-known PPARα agonists fibrates. The crystal structures of the complexes showed that they form a canonical hydrogen-bond network involving helix 12 in the LBD, which is thought to be essential for PPARα activation, as also observed for fibrates. However, the phenyl side chain of the compounds occupies a small cavity between Ile272 and Ile354, which is rarely accessed by fibrates. This unique feature may be essential for subtype selectivity and combine with the well-characterized binding mode of fibrates to improve activity. These findings demonstrate the advantage of using 1H-pyrazolo-[3,4-b]pyridine as a skeleton of PPARα agonists and provide insight into the design of molecules for treating dyslipidemia.
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Affiliation(s)
- Takuya Yoshida
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Hiroya Oki
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Michihiro Doi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Syohei Fukuda
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Tomohiro Yuzuriha
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka, 573-0101, Japan
| | - Ryotaro Tabata
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kenji Ishimoto
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kazuki Kawahara
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Tadayasu Ohkubo
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hiroyuki Miyachi
- Drug Discover Initiative, University of Tokyo, 7-3-1 Hongo, Bynkyo, Tokyo, 113-0033, Japan
| | - Takefumi Doi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Keisuke Tachibana
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
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Chicca A, Arena C, Bertini S, Gado F, Ciaglia E, Abate M, Digiacomo M, Lapillo M, Poli G, Bifulco M, Macchia M, Tuccinardi T, Gertsch J, Manera C. Polypharmacological profile of 1,2-dihydro-2-oxo-pyridine-3-carboxamides in the endocannabinoid system. Eur J Med Chem 2018; 154:155-171. [PMID: 29793210 DOI: 10.1016/j.ejmech.2018.05.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 05/11/2018] [Accepted: 05/12/2018] [Indexed: 02/07/2023]
Abstract
The endocannabinoid system (ECS) represents one of the major neuromodulatory systems involved in different physiological and pathological processes. Multi-target compounds exert their activities by acting via multiple mechanisms of action and represent a promising pharmacological modulation of the ECS. In this work we report 4-substituted and 4,5-disubstituted 1,2-dihydro-2-oxo-pyridine-3-carboxamide derivatives with a broad spectrum of affinity and functional activity towards both cannabinoid receptors and additional effects on the main components of the ECS. In particular compound B3 showed high affinity for CB1R (Ki = 23.1 nM, partial agonist) and CB2R (Ki = 6.9 nM, inverse agonist) and also significant inhibitory activity (IC50 = 70 nM) on FAAH with moderate inhibition of ABHD12 (IC50 = 2.5 μΜ). Compounds B4, B5 and B6 that act as full agonists at CB1R and as partial agonists (B5 and B6) or antagonist (B4) at CB2R, exhibited an additional multi-target property by inhibiting anandamide uptake with sub-micromolar IC50 values (0.28-0.62 μΜ). The best derivatives showed cytotoxic activity on U937 lymphoblastoid cells. Finally, molecular docking analysis carried out on the three-dimensional structures of CB1R and CB2R and of FAAH allowed to rationalize the structure-activity relationships of this series of compounds.
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Affiliation(s)
- Andrea Chicca
- Institute of Biochemistry and Molecular Medicine, NCCR TransCure, University of Bern, Bühlstrasse 28, CH-3012, Bern, Switzerland
| | - Chiara Arena
- Department of Pharmacy, University of Pisa, 56126, Pisa, Italy
| | - Simone Bertini
- Department of Pharmacy, University of Pisa, 56126, Pisa, Italy
| | - Francesca Gado
- Department of Pharmacy, University of Pisa, 56126, Pisa, Italy
| | - Elena Ciaglia
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, 84081, Baronissi, Salerno, Italy
| | - Mario Abate
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, 84081, Baronissi, Salerno, Italy
| | - Maria Digiacomo
- Department of Pharmacy, University of Pisa, 56126, Pisa, Italy
| | | | - Giulio Poli
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, via Aldo Moro 2, 53019, Siena, Italy
| | - Maurizio Bifulco
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131, Naples, Italy
| | - Marco Macchia
- Department of Pharmacy, University of Pisa, 56126, Pisa, Italy
| | - Tiziano Tuccinardi
- Department of Pharmacy, University of Pisa, 56126, Pisa, Italy; Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
| | - Jürg Gertsch
- Institute of Biochemistry and Molecular Medicine, NCCR TransCure, University of Bern, Bühlstrasse 28, CH-3012, Bern, Switzerland
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6
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Sarkar B, Maiti S, Jadhav GR, Paira P. Discovery of benzothiazolylquinoline conjugates as novel human A 3 receptor antagonists: biological evaluations and molecular docking studies. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171622. [PMID: 29515874 PMCID: PMC5830763 DOI: 10.1098/rsos.171622] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 01/08/2018] [Indexed: 03/16/2024]
Abstract
Adenosine is known as an endogenous purine nucleoside and it modulates a wide variety of physiological responses by interacting with adenosine receptors. Among the four adenosine receptor subtypes, the A3 receptor is of major interest in this study as it is overexpressed in some cancer cell lines. Herein, we have highlighted the strategy of designing the hA3 receptor targeted novel benzothiazolylquinoline scaffolds. The radioligand binding data of the reported compounds are rationalized with the molecular docking results. Compound 6a showed best potency and selectivity at hA3 among other adenosine receptors.
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Affiliation(s)
| | | | | | - Priyankar Paira
- Department of Chemistry, School of Advanced Sciences, VIT University, Vellore, Tamil Nadu 632014, India
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7
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Xu H, Li L, Wang Z, Xi J, Rong L. A green synthesis of 1,7-dihydrodipyrazolo[3,4-b:4′,3′-e]pyridin-3(2H)-one derivatives from deamination cyclization reactions in aqueous medium. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3302-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Gao Q, He S, Wu X, Zhang J, Bai S, Wu Y, Wu A. Selective access to dipyrazolo-fused pyridines via formal [3 + 2 + 1] heteroannulation of methyl ketones with pyrazol-5-amines. Org Chem Front 2018. [DOI: 10.1039/c7qo00941k] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A fascinating new form of the Hantzsch reaction with methyl ketones and pyrazol-5-amines for the selective synthesis of dipyrazolo-fused pyridines has been discovered.
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Affiliation(s)
- Qinghe Gao
- School of Pharmacy
- Xinxiang Medical University
- Xinxiang
- P. R. China
- Key Laboratory of Pesticide & Chemical Biology
| | - Shuang He
- School of Pharmacy
- Xinxiang Medical University
- Xinxiang
- P. R. China
| | - Xia Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Jingjing Zhang
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Suping Bai
- School of Pharmacy
- Xinxiang Medical University
- Xinxiang
- P. R. China
| | - Yandong Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Anxin Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
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Koul S, Ramdas V, Barawkar DA, Waman YB, Prasad N, Madadi SK, Shejul YD, Bonagiri R, Basu S, Menon S, Reddy SB, Chaturvedi S, Chennamaneni SR, Bedse G, Thakare R, Gundu J, Chaudhary S, De S, Meru AV, Palle V, Chugh A, Mookhtiar KA. Design and synthesis of novel, potent and selective hypoxanthine analogs as adenosine A 1 receptor antagonists and their biological evaluation. Bioorg Med Chem 2017; 25:1963-1975. [DOI: 10.1016/j.bmc.2017.02.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 02/08/2017] [Accepted: 02/10/2017] [Indexed: 10/20/2022]
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10
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Tu XJ, Hao WJ, Ye Q, Wang SS, Jiang B, Li G, Tu SJ. Four-component bicyclization approaches to skeletally diverse pyrazolo[3,4-b]pyridine derivatives. J Org Chem 2014; 79:11110-8. [PMID: 25338160 PMCID: PMC4242041 DOI: 10.1021/jo502096t] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Indexed: 01/06/2023]
Abstract
A novel four-component bicyclization strategy has been established, allowing a flexible and practical approach to 37 examples of multicyclic pyrazolo[3,4-b]pyridines from low-cost and readily accessible arylglyoxals, pyrazol-5-amines, aromatic amines, 4-hydroxy-6-methyl-2H-pyran-2-one, and cyclohexane-1,3-diones. The polysubstituted cyclopenta[d]pyrazolo[3,4-b]pyridines were stereoselectively synthesized through a microwave-assisted special [3+2+1]/[3+2] bicyclization with good control of the spatial configuration of exocyclic double bonds. The novel [3+2+1]/[2+2+1] bicyclization resulted in 17 examples of unreported pyrazolo[3,4-b]pyrrolo[4,3,2-de]quinolones. Reasonable mechanisms for forming two new types of multicyclic pyrazolo[3,4-b]pyridines are also proposed.
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Affiliation(s)
- Xing-Jun Tu
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Wen-Juan Hao
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Qin Ye
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Shuang-Shuang Wang
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Bo Jiang
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Guigen Li
- Institute
of Chemistry & Biomedical Sciences, Nanjing University, Nanjing 210093, P. R. China
- Department
of Chemistry and Biochemistry, Texas Tech
University, Lubbock, Texas 79409-1061, United States
| | - Shu-Jiang Tu
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
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11
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El-Borai MA, Rizk HF, Beltagy DM, El-Deeb IY. Microwave-assisted synthesis of some new pyrazolopyridines and their antioxidant, antitumor and antimicrobial activities. Eur J Med Chem 2013; 66:415-22. [PMID: 23831694 DOI: 10.1016/j.ejmech.2013.04.043] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 03/17/2013] [Accepted: 04/21/2013] [Indexed: 01/18/2023]
Abstract
The chemical behavior of 4-(dimethylaminomethylene)-1-phenyl-3-(pyridin-3-yl)-1H-pyrazol-5(4H)-one (enaminone) (2) toward some active methylene reagents has been reported to give pyrazolopyridine derivatives. All the reactions were carried out by conventional heating and microwave irradiation technique. The antioxidant activity of the prepared compounds was studied using 1,1-phenyl-2-picrylhydrazyl (DPPH) assay. Compounds (4c) and (4d) showed the highest activity. The antitumor activity against liver and breast cell lines was tested. Compounds (6), (9) and (11) showed the highest activity for liver cell line while compounds (6) and (9) showed the highest activity for breast cell line. Compounds (4a-d) were screened for their antibacterial activity against Gram-positive, Gram-negative bacteria and antifungal activity.
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Affiliation(s)
- Mohamed A El-Borai
- Department of Chemistry, Faculty of Science, Tanta University, 31527 Tanta, Egypt.
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12
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Peculiarities of cyclization of ethyl 2-ethoxymethylene-3-oxo-3-(polyfluoroalkyl)propionates with 3-amino-5-hydroxypyrazole. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.01.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Molecular Modeling of Adenosine Receptors. Methods Enzymol 2013. [DOI: 10.1016/b978-0-12-407865-9.00003-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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14
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Lominac WJ, D’Angelo ML, Smith MD, Ollison DA, Hanna JM. Construction of pyrazolo[3,4-b]pyridines and pyrazolo[4,3-c]pyridines by ring closure of 3-acylpyridine N-oxide tosylhydrazones. Tetrahedron Lett 2012; 53:906-909. [PMID: 22345825 PMCID: PMC3278155 DOI: 10.1016/j.tetlet.2011.12.055] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3-Acylpyridine N-oxide tosylhydrazones give good overall yields of a mixture of pyrazolo[3,4-b]pyridines and pyrazolo[4,3-c]pyridines when treated with an electrophilic additive and an amine base. (Z)-Hydrazones cyclize readily, while (E)-hydrazones fail to react under the reported conditions. The reaction takes place at room temperature, and moderate regiocontrol over the cyclization can be achieved by varying the electrophile/solvent combination.
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Affiliation(s)
- William J. Lominac
- Department of Chemistry, Physics, and Geology, Winthrop University, Sims Science Building, Rock Hill, SC 29733 USA
| | - Megan L. D’Angelo
- Department of Chemistry, Physics, and Geology, Winthrop University, Sims Science Building, Rock Hill, SC 29733 USA
| | - Mark D. Smith
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208 USA
| | - Darius A. Ollison
- Department of Chemistry, Physics, and Geology, Winthrop University, Sims Science Building, Rock Hill, SC 29733 USA
| | - James M. Hanna
- Department of Chemistry, Physics, and Geology, Winthrop University, Sims Science Building, Rock Hill, SC 29733 USA
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15
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Fanelli F, De Benedetti PG. Update 1 of: computational modeling approaches to structure-function analysis of G protein-coupled receptors. Chem Rev 2011; 111:PR438-535. [PMID: 22165845 DOI: 10.1021/cr100437t] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Francesca Fanelli
- Dulbecco Telethon Institute, University of Modena and Reggio Emilia, via Campi 183, 41125 Modena, Italy.
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16
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Synthesis and antibacterial activity of some novel pyrazolopyridine derivatives. Chem Heterocycl Compd (N Y) 2011. [DOI: 10.1007/s10593-011-0699-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tuccinardi T, Zizzari AT, Brullo C, Daniele S, Musumeci F, Schenone S, Trincavelli ML, Martini C, Martinelli A, Giorgi G, Botta M. Substituted pyrazolo[3,4-b]pyridines as human A1 adenosine antagonists: Developments in understanding the receptor stereoselectivity. Org Biomol Chem 2011; 9:4448-55. [DOI: 10.1039/c0ob01064b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Falchi F, Manetti F, Carraro F, Naldini A, Maga G, Crespan E, Schenone S, Bruno O, Brullo C, Botta M. 3D QSAR Models Built on Structure-Based Alignments of Abl Tyrosine Kinase Inhibitors. ChemMedChem 2009; 4:976-87. [DOI: 10.1002/cmdc.200800441] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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