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Puratchikody A, Umamaheswari A, Irfan N, Sriram D. Molecular Dynamics Studies on COX-2 Protein-tyrosine Analogue Complex and Ligand-based Computational Analysis of Halo-substituted Tyrosine Analogues. LETT DRUG DES DISCOV 2019. [DOI: 10.2174/1570180815666180627123445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
The quest for new drug entities and novel structural fragments with
applications in therapeutic areas is always at the core of medicinal chemistry.
Methods:
As part of our efforts to develop novel selective cyclooxygenase-2 (COX-2) inhibitors
containing tyrosine scaffold. The objective of this study was to identify potent COX-2 inhibitors by
dynamic simulation, pharmacophore and 3D-QSAR methodologies. Dynamics simulation was performed
for COX-2/tyrosine derivatives complex to characterise structure validation and binding
stability. Certainly, Arg120 and Tyr355 residue of COX-2 protein formed a constant interaction
with tyrosine inhibitor throughout the dynamic simulation phase. A four-point pharmacophore with
one hydrogen bond acceptor, two hydrophobic and one aromatic ring was developed using the
HypoGen algorithm. The generated, statistically significant pharmacophore model, Hypo 1 with a
correlation coefficient of r2, 0.941, root mean square deviation, 1.15 and total cost value of 96.85.
Results:
The QSAR results exhibited good internal (r2, 0.992) and external predictions (r2pred,
0.814). The results of this study concluded the COX-2 docked complex was stable and interactive
like experimental protein structure. Also, it offered vital chemical features with geometric constraints
responsible for the inhibition of the selective COX-2 enzyme by tyrosine derivatives.
Conclusion:
In principle, this work offers significant structural understandings to design and develop
novel COX-2 inhibitors.
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Affiliation(s)
- Ayarivan Puratchikody
- Drug Discovery and Development Research Group, Department of Pharmaceutical Technology, Bharathidasan Institute of Technology, Anna University, Tiruchirappalli 620024, Tamilnadu, India
| | - Appavoo Umamaheswari
- Drug Discovery and Development Research Group, Department of Pharmaceutical Technology, Bharathidasan Institute of Technology, Anna University, Tiruchirappalli 620024, Tamilnadu, India
| | - Navabshan Irfan
- Drug Discovery and Development Research Group, Department of Pharmaceutical Technology, Bharathidasan Institute of Technology, Anna University, Tiruchirappalli 620024, Tamilnadu, India
| | - Dharmarajan Sriram
- Pharmacy Group, Birla Institute of Technology and Sciences-Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad 560078, India
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Labib MB, Sharkawi SM, El-Daly M. Design, synthesis of novel isoindoline hybrids as COX-2 inhibitors: Anti-inflammatory, analgesic activities and docking study. Bioorg Chem 2018; 80:70-80. [DOI: 10.1016/j.bioorg.2018.05.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/14/2018] [Accepted: 05/20/2018] [Indexed: 10/16/2022]
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3
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Synthesis and Biological Evaluation of N- Pyrazolyl Derivatives and Pyrazolopyrimidine Bearing a Biologically Active Sulfonamide Moiety as Potential Antimicrobial Agent. Molecules 2016; 21:molecules21091156. [PMID: 27589717 PMCID: PMC6273005 DOI: 10.3390/molecules21091156] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 08/21/2016] [Accepted: 08/25/2016] [Indexed: 11/29/2022] Open
Abstract
A series of novel pyrazole-5-carboxylate containing N-triazole derivatives 3,4; different heterocyclic amines 7a–b and 10a–b; pyrazolo[4,3-d]pyrimidine containing sulfa drugs 14a,b; and oxypyrazolo[4,3-d]pyrimidine derivatives 17, 19, 21 has been synthesized. The structure of the newly synthesized compounds was elucidated on the basis of analytical and spectral analyses. All compounds have been screened for their in vitro antimicrobial activity against three gram-positive and gram-negative bacteria as well as three fungi. The results revealed that compounds 14b and 17 had more potent antibacterial activity against all bacterial strains than reference drug Cefotaxime. Moreover compounds 4, 7b, and 12b showed excellent antifungal activities against Aspergillus niger and Candida albicans in low inhibitory concentrations but slightly less than the reference drug miconazole against Aspergillus flavus.
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Gomes RA, Genesi GL, Maltarollo VG, Trossini GHG. Quantitative structure–activity relationships (HQSAR, CoMFA, and CoMSIA) studies for COX-2 selective inhibitors. J Biomol Struct Dyn 2016; 35:1436-1445. [DOI: 10.1080/07391102.2016.1185379] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Renan A. Gomes
- Pharmaceutical Sciences Faculty, Department of Pharmacy, University of São Paulo, Av. Professor Lineu Prestes, 580, São Paulo, SP, Brazil
| | - Giovani L. Genesi
- Pharmaceutical Sciences Faculty, Department of Pharmacy, University of São Paulo, Av. Professor Lineu Prestes, 580, São Paulo, SP, Brazil
| | - Vinicius G. Maltarollo
- Pharmaceutical Sciences Faculty, Department of Pharmacy, University of São Paulo, Av. Professor Lineu Prestes, 580, São Paulo, SP, Brazil
- Faculty of Pharmacy, Department of Pharmaceutical Products, Federal University of Minas Gerais, Av. Presidente Antonio Carlos, 6627, Belo Horizonte, MG, Brazil
| | - Gustavo H. G. Trossini
- Pharmaceutical Sciences Faculty, Department of Pharmacy, University of São Paulo, Av. Professor Lineu Prestes, 580, São Paulo, SP, Brazil
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Salem ME, Darweesh AF, Farag AM, Elwahy AHM. Synthesis and Structures of Novel Multi-armed Molecules Involving Benzene as a Core and 4-Phenylthiazole, 4-Pyrazolylthiazole, or Thiadiazole Units as Arms. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2629] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Mostafa E. Salem
- Chemistry Department, Faculty of Science; Cairo University; Giza 12613 Egypt
| | - Ahmed F. Darweesh
- Chemistry Department, Faculty of Science; Cairo University; Giza 12613 Egypt
| | - Ahmad M. Farag
- Chemistry Department, Faculty of Science; Cairo University; Giza 12613 Egypt
| | - Ahmed H. M. Elwahy
- Chemistry Department, Faculty of Science; Cairo University; Giza 12613 Egypt
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Rao KS, Ramesh P, Trivedi R, Kantam ML. Chiral squaramide catalyzed synthesis of C4 substituted chiral pyrazol-3-ol derivatives via a facile asymmetric Michael addition of 3-methyl-2-pyrazolin-5-one to β-nitrostyrenes. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.02.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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7
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Salem ME, Darweesh AF, Farag AM, Elwahy AH. 2-Bromo-1-(1H-pyrazol-4-yl)ethanone: versatile precursors for novel mono-, bis- and poly{6-(1H-pyrazol-4-yl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines}. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.12.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Regioselectively controlled synthesis of 3(5)-(trifluoromethyl)pyrazolylbenzenesulfonamides and their effects on a pathological pain model in mice. Eur J Med Chem 2015; 102:143-52. [DOI: 10.1016/j.ejmech.2015.07.036] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 07/17/2015] [Accepted: 07/18/2015] [Indexed: 11/20/2022]
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9
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Bonacorso HG, Pittaluga EP, Porte LM, Junges AF, Libero FM, Zanatta N, Martins MA. New 4-fluoroalkyl substituted N-phenylpyrazoles: Synthesis promoted by DAST and multinuclear NMR analysis. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.05.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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10
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Ma S, Tan S, Fang D, Zhang R, Zhou S, Wu W, Zheng K. Probing the binding mechanism of novel dual NF-κB/AP-1 inhibitors by 3D-QSAR, docking and molecular dynamics simulations. RSC Adv 2015. [DOI: 10.1039/c5ra10831d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Potent dual NF-κB/AP-1 inhibitors could effectively treat immunoinflammatory diseases. An integrated computational study was carried out to identify the most favourable binding sites, the structural features and the interaction mechanisms.
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Affiliation(s)
- Shaojie Ma
- Department of Physical Chemistry
- College of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006
- PR China
| | - Shepei Tan
- Department of Physical Chemistry
- College of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006
- PR China
| | - Danqing Fang
- Department of Cardiothoracic Surgery
- Affiliated Second Hospital of Guangzhou Medical University
- Guangzhou 510260
- PR China
| | - Rong Zhang
- Department of Physical Chemistry
- College of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006
- PR China
| | - Shengfu Zhou
- Department of Physical Chemistry
- College of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006
- PR China
| | - Wenjuan Wu
- Department of Physical Chemistry
- College of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006
- PR China
| | - Kangcheng Zheng
- School of Chemistry and Chemical Engineering
- SunYat-Sen University
- Guangzhou 510275
- PR China
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11
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Obydennov DL, Usachev BI, Sosnovskikh VY. Reactions of 2-Mono- and 2,6-Disubstituted 4-Pyrones with Phenylhydrazine as General Method for the Synthesis of 3-(N-Phenylpyrazolyl)Indoles. Chem Heterocycl Compd (N Y) 2014. [DOI: 10.1007/s10593-014-1603-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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12
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Chandna N, Kapoor JK, Grover J, Bairwa K, Goyal V, Jachak SM. Pyrazolylbenzyltriazoles as cyclooxygenase inhibitors: synthesis and biological evaluation as dual anti-inflammatory and antimicrobial agents. NEW J CHEM 2014. [DOI: 10.1039/c4nj00226a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Khloya P, Kumar P, Mittal A, Aggarwal NK, Sharma PK. Synthesis of some novel 4-arylidene pyrazoles as potential antimicrobial agents. Org Med Chem Lett 2013; 3:9. [PMID: 23981685 PMCID: PMC3765936 DOI: 10.1186/2191-2858-3-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 08/20/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Pyrazole and pyrazolone motifs are well known for their wide range of biological activities such as antimicrobial, anti-inflammatory, and antitumor activities. The incorporation of more than one pharmacophore in a single scaffold is a well known approach for the development of more potent drugs. In the present investigation, a series of differently substituted 4-arylidene pyrazole derivatives bearing pyrazole and pyrazolone pharmacophores in a single scaffold was synthesized. RESULTS The synthesis of novel 4-arylidene pyrazole compounds is achieved through Knovenagel condensation between 1,3-diaryl-4-formylpyrazoles and 3-methyl-1-phenyl-1H-pyrazol-5-(4H)-ones in good yields. All compounds were evaluated for their in vitro antimicrobial activity. CONCLUSIONS A series of 4-arylidene pyrazole derivatives was evaluated for their in vitro antimicrobial activity against two Gram-positive (Bacillus subtilis and Staphylococcus aureus) and two Gram-negative bacteria (Pseudomonas fluorescens and Escherichia coli), as well as two pathogenic fungal strains (Candida albicans and Saccharomyces cerevisiae). The majority of the compounds displayed excellent antimicrobial profile against the Gram-positive (B. subtilis and S. aureus), and some of them are even more potent than the reference drug ciprofloxacin.
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Affiliation(s)
- Poonam Khloya
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, India.
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Chandna N, Kumar S, Kaushik P, Kaushik D, Roy SK, Gupta GK, Jachak SM, Kapoor JK, Sharma PK. Synthesis of novel celecoxib analogues by bioisosteric replacement of sulfonamide as potent anti-inflammatory agents and cyclooxygenase inhibitors. Bioorg Med Chem 2013; 21:4581-90. [DOI: 10.1016/j.bmc.2013.05.029] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 04/27/2013] [Accepted: 05/17/2013] [Indexed: 02/02/2023]
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15
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Foster RS, Adams H, Jakobi H, Harrity JPA. Synthesis of 4-Fluoromethylsydnones and their Participation in Alkyne Cycloaddition Reactions. J Org Chem 2013; 78:4049-64. [DOI: 10.1021/jo400381a] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Robert S. Foster
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Harry Adams
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Harald Jakobi
- Research-Weed Control Chemistry, Bayer CropScience, AG 65926 Frankfurt am Main, Germany
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16
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Yewale SB, Ganorkar SB, Baheti KG, Shelke RU. Novel 3-substituted-1-aryl-5-phenyl-6-anilinopyrazolo[3,4-d]pyrimidin-4-ones: Docking, synthesis and pharmacological evaluation as a potential anti-inflammatory agents. Bioorg Med Chem Lett 2012; 22:6616-20. [DOI: 10.1016/j.bmcl.2012.08.119] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2012] [Revised: 08/09/2012] [Accepted: 08/30/2012] [Indexed: 11/24/2022]
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17
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Yadlapalli RK, Chourasia OP, Vemuri K, Sritharan M, Perali RS. Synthesis and in vitro anticancer and antitubercular activity of diarylpyrazole ligated dihydropyrimidines possessing lipophilic carbamoyl group. Bioorg Med Chem Lett 2012; 22:2708-11. [PMID: 22437116 DOI: 10.1016/j.bmcl.2012.02.101] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Revised: 02/27/2012] [Accepted: 02/29/2012] [Indexed: 10/28/2022]
Abstract
A series of dihydropyrimidine derivatives were synthesized by utilizing Biginelli reaction and evaluated for their in vitro anticancer activity against MCF-7 human breast cancer (HBC) cell line using sulforhodamine B (SRB) assay and antitubercular activity against Mycobacterium tuberculosis (MTB) H(37)Rv using Microplate Alamar Blue Assay (MABA). Compounds 13p, 13t were exhibited 70.6% and 63.7% of HBC cell growth inhibition at 10 μM concentration. Interestingly compound 13p was also found to be the most potent in the series against MTB H(37)Rv with MIC value of 0.125 μg/mL.
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Affiliation(s)
- Rama Krishna Yadlapalli
- Department of Chemistry, Dr. Harisingh Gour University (A Central University), Sagar, MP, India
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18
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Kostryukova TS, Ivanovskaya NP, Lyamin AI, Romanov DV, Osin NS, Zatonsky GV, Vasil’ev NV. Synthesis and luminescence-spectral properties of benzoheterocyclic β-diketones and their complexes with europium. RUSS J GEN CHEM+ 2012. [DOI: 10.1134/s1070363212030152] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Usachev BI, Obydennov DL, Sosnovskikh VY. Regioselective synthesis of trifluoromethylated 3-(pyrazolyl)indoles on the basis of 6-(trifluoromethyl)comanic acid. J Fluor Chem 2012. [DOI: 10.1016/j.jfluchem.2011.12.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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20
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Sharma PK, Chandna N, Kumar S, Kumar P, Kumar S, Kaushik P, Kaushik D. Heteroaromatic analogues of 1,5-diarylpyrazole class as anti-inflammatory agents. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9898-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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21
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Unusual reactivity of β-(3-indolyl)-α,β-unsaturated ketones. 2-Acetylvinyl group removal by phenylhydrazine hydrochloride. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.07.136] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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22
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Fun HK, Hemamalini M, Abdel-Aziz HA, Aboul-Fadl T. (Z)-Ethyl 2-cyano-2-{2-[5,6-dimethyl-4-(thio-phen-2-yl)-1H-pyrazolo-[3,4-b]pyridin-3-yl]hydrazinylidene}acetate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o2145-6. [PMID: 22091161 PMCID: PMC3213584 DOI: 10.1107/s1600536811028911] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Accepted: 07/18/2011] [Indexed: 11/10/2022]
Abstract
In the title compound, C17H16N6O2S, an intramolecular N—H⋯O interaction generates an S(6) ring. The pyridine ring makes a dihedral angle of 71.38 (11)° with the thiophene ring. In the crystal, molecules are linked by a pair of N—H⋯N hydrogen bonds, forming an inversion dimer. The dimers are stacked in columns along the b axis through weak intermolecular C—H⋯N hydrogen bonds.
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23
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Haider A, Akhter Z, Bolte M, Zia-ul Haq M, Siddiqi HM. 2-{5-[2-(4-Nitrophenoxy)phenyl]-1-phenyl-1 H-pyrazol-3-yl}phenol. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o787. [PMID: 21580626 PMCID: PMC2984047 DOI: 10.1107/s1600536810008251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Accepted: 03/03/2010] [Indexed: 12/01/2022]
Abstract
In the title compound, C27H19N3O4, the phenol and pyrazole rings are almost coplanar [dihedral angle = 0.95 (12)°] due to an intramolecular O—H⋯N hydrogen bond, whereas the phenyl ring is tilted by 40.81 (7)° with respect to the plane of the pyrazole ring. The aromatic ring with a nitrophenoxy substituent makes a dihedral angle of 54.10 (7)° with the pyrazole ring.
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Ramalho TC, Rocha MVJ, da Cunha EFF, Freitas MP. The search for new COX-2 inhibitors: a review of 2002 - 2008 patents. Expert Opin Ther Pat 2009; 19:1193-228. [PMID: 19563267 DOI: 10.1517/13543770903059125] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Two COX isoenzymes are known, COX-1 and COX-2, for which the main inhibitors are the NSAIDs. The common anti-inflammatory drugs (such as aspirin, ibuprofen and naproxen) all act by blocking the action of both the COX-1 and COX-2 enzymes. The COX-2 inhibitors represent a new class of drugs that do not affect COX-1 but selectively block COX-2. This selective action provides the benefits of reducing inflammation without irritating the stomach and cardiovascular effects. OBJECTIVE This review focuses on patents published in the field during 2002 - 2008, paying particular attention to promising COX-2 inhibitors. CONCLUSION Structural analogues of the COX-2 inhibitors celecoxib and valdecoxib, and novel potential pyridazine, triazole, indole and thione derivatives emerge as promising leads for the treatment of inflammation, pain and other diseases.
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Affiliation(s)
- Teodorico C Ramalho
- Universidade Federal de Lavras, Departamento de Química, Campus universitário- UFLA, 37200-000 Lavras, MG, Brazil.
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25
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Sharma BK, Pilania P, Singh P. Modeling of cyclooxygenase-2 and 5-lipooxygenase inhibitory activity of apoptosis-inducing agents potentially useful in prostate cancer chemotherapy: derivatives of diarylpyrazole. J Enzyme Inhib Med Chem 2009; 24:607-15. [PMID: 18825552 DOI: 10.1080/14756360802318878] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
The structure-activity models of the twenty derivatives for COX-2 and ten derivatives of 1,5-diarylpyrazole for 5-LOX inhibitory activity have been investigated using Combinatorial Protocol in Multiple Linear Regression (CP-MLR) with topological descriptors which were calculated from DRAGON software. Among the descriptor classes considered collectively in the study the COX-2 inhibitory activity was, however, correlated with topological (TOPO) and Galvez topological charge indices (GVZ). Modified Burden eigenvalues (BCUT) and 2D autocorrelations (2DAUTO) classes of descriptors have shown correlation to 5-LOX inhibitory activity. The developed models and participating descriptors in them have suggested that the substitutional modification in the diarylpyrazole moiety may have sufficient scope in optimization of prevailing inhibitory activities of these analogues.
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Affiliation(s)
- B K Sharma
- Department of Chemistry, SK Government College, Sikar, Rajasthan, India.
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26
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Kocyigit-Kaymakcioglu B, Toklu HZ, Ikiz S, Bagcigil AF, Rollas S, Ozgur NY, Ak S. Synthesis and antinociceptive-antimicrobial activities of some new amide derivatives of 3,5-di/-and 1,3,5-trimethylpyrazoles. J Enzyme Inhib Med Chem 2008; 23:454-61. [PMID: 18665993 DOI: 10.1080/14756360701631686] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Some N-(3,5-di-/1,3,5-trimethylpyrazole-4-yl)-4-substitutedbenzamide derivatives were prepared as possible antiociceptive-antimicrobial agents. New amide derivatives (3-12) were synthesized by reacting 4-amino-3,5-di and 1,3,5-trimethylpyrazoles with 4-substitutedbenzoyl chlorides. Hotplate and tail-immersion tests were used for the determination of the antinociceptive activity. Morphine, was used as a standard test drug. All compounds were administered at a dose of 100 mg/kg ip and some of them had significant antinociceptive activity in both tests. Compound 10 (N-(1,3,5-trimethylpyrazole-4-yl)-4-bromobenzamide), was the most active one in both tests among the compounds. The antinociceptive activity of the compounds 10, 11 (N-(1,3,5-trimethylpyrazole-4-yl)-4-chlorobenzamide), and 12 (N-(1,3,5-trimethylpyrazole-4-yl)-4-fluorobenzamide), started at 30 minutes and continued up to 150 minutes in the hotplate test. Also compounds were tested for their in vitro antimicrobial activity, but exhibited weak antibacterial activity.
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27
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Barillari C, Marcou G, Rognan D. Hot-spots-guided receptor-based pharmacophores (HS-Pharm): a knowledge-based approach to identify ligand-anchoring atoms in protein cavities and prioritize structure-based pharmacophores. J Chem Inf Model 2008; 48:1396-410. [PMID: 18570371 DOI: 10.1021/ci800064z] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The design of biologically active compounds from ligand-free protein structures using a structure-based approach is still a major challenge. In this paper, we present a fast knowledge-based approach (HS-Pharm) that allows the prioritization of cavity atoms that should be targeted for ligand binding, by training machine learning algorithms with atom-based fingerprints of known ligand-binding pockets. The knowledge of hot spots for ligand binding is here used for focusing structure-based pharmacophore models. Three targets of pharmacological interest (neuraminidase, beta2 adrenergic receptor, and cyclooxygenase-2) were used to test the evaluated methodology, and the derived structure-based pharmacophores were used in retrospective virtual screening studies. The current study shows that structure-based pharmacophore screening is a powerful technique for the fast identification of potential hits in a chemical library, and that it is a valid alternative to virtual screening by molecular docking.
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Affiliation(s)
- Caterina Barillari
- Bioinformatics of the Drug, UMR 7175 CNRS-ULP (Universite Louis Pasteur-Strasbourg I), 74 route du Rhin, B.P. 24, F-67400 Illkirch, France
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28
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Zhao BX, Zhang L, Zhu XS, Wan MS, Zhao J, Zhang Y, Zhang SL, Miao JY. Synthesis and discovery of a novel pyrazole derivative as an inhibitor of apoptosis through modulating integrin β4, ROS, and p53 levels in vascular endothelial cells. Bioorg Med Chem 2008; 16:5171-80. [DOI: 10.1016/j.bmc.2008.03.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Revised: 03/02/2008] [Accepted: 03/04/2008] [Indexed: 12/17/2022]
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Rodinovskaya LA, Shestopalov AM, Gromova AV, Shestopalov AA. One-pot synthesis of diverse 4-di(tri)fluoromethyl-3-cyanopyridine-2(1H)-thiones and their utilities in the cascade synthesis of annulated heterocycles. ACTA ACUST UNITED AC 2008; 10:313-22. [PMID: 18269251 DOI: 10.1021/cc7001793] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diverse substituted 4-di(tri)fluoromethyl-3-cyanopyridine-2(1H)-thiones were synthesized via the Claisen condensation of alpha-methyl(methylene)ketones with di(tri)fluoroacetate, followed by the immediate Thorpe-Guareschi reaction of the preformed di(tri)fluoromethyl-1,3-diketones with cyanothioacetamide. The procedure allows facile synthesis of the di(tri)flouromethylated pyridine-2(1H)-thiones in 50-95% yields, without the need for isolation and purification of intermediates. Resultant 4-di(tri)fluoromethyl-3-cyanopyridine-2(1 H)-thiones were subsequently utilized in domino reactions to produce first various substituted thieno[2,3-b]pyridines and, then, thienopyridines polyannulated with pyridine, pyrimidine, benzodiazocine, diazepine, and pyran rings.
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Singh SK, Shivaramakrishna S, Saibaba V, Rao KS, Ganesh KR, Vasudev R, Kumar PP, Babu JM, Vyas K, Rao YK, Iqbal J. Pharmacophoric 2-hydroxyalkyl benzenesulfonamide: a single-step synthesis from benzenesulfonamide via hemiaminal. Eur J Med Chem 2007; 42:456-62. [PMID: 17097771 DOI: 10.1016/j.ejmech.2006.09.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2006] [Revised: 07/10/2006] [Accepted: 09/21/2006] [Indexed: 11/21/2022]
Abstract
ortho-Acylation attempt of benzenesulfonamide afforded the corresponding hemiaminal as major product. The in situ reduction of the reaction mixture, reported herein, directly provided 2-hydroxyalkyl benzenesulfonamide, an important pharmacophoric element for designing drug-like scaffolds. Its application is demonstrated through designing a novel series of 1,5-diarylpyrazoles for cyclooxygenase-2 (COX-2) inhibition.
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Affiliation(s)
- Sunil K Singh
- Discovery Chemistry, Discovery Research, Dr. Reddy's Laboratories Ltd., Bollaram Road, Miyapur, Hyderabad 500 049, India.
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Singh P, Mittal A, Kaur S, Kumar S. 5-Substituted-2,3-diphenyltetrahydrofurans: A new class of moderately selective COX-2 inhibitors. Bioorg Med Chem 2006; 14:7910-6. [PMID: 16904332 DOI: 10.1016/j.bmc.2006.07.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2006] [Revised: 07/25/2006] [Accepted: 07/26/2006] [Indexed: 10/24/2022]
Abstract
The nature of C-5 substituent and the configuration at C-5 carbon of 2,3-diphenyltetrahydrofurans, with chiral centres at C-2, C-3 and C-5, show a remarkable influence on their COX-2 inhibition and selectivity. Out of the eight compounds investigated here, 1b with COOH group and R* configuration at C-5, and 2d with CH2SCH2CH3 group and S* configuration at C-5 have been identified as lead molecules for further studies on COX-2 inhibition.
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Affiliation(s)
- Palwinder Singh
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, India.
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Singh SK, Vobbalareddy S, Kalleda SR, Casturi SR, Mullangi R, Ramanujam R, Yeleswarapu KR, Iqbal J. N-Acylated sulfonamide sodium salt: A prodrug of choice for the bifunctional 2-hydroxymethyl-4-(5-phenyl-3-trifluoromethyl-pyrazol-1-yl) benzenesulfonamide class of COX-2 inhibitors. Bioorg Med Chem Lett 2006; 16:3921-6. [PMID: 16730986 DOI: 10.1016/j.bmcl.2006.05.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2006] [Accepted: 05/11/2006] [Indexed: 11/18/2022]
Abstract
Synthesis and biological evaluation of possible prodrugs of COX-2 inhibitors involving sulfonamide and hydroxymethyl groups of 2-hydroxymethyl-4-(5-phenyl-3-trifluoromethyl-pyrazol-1-yl) benzenesulfonamides are described. Out of many options, the sodium salt of N-propionyl sulfonamide demonstrated much improved pharmacological profiles and physicochemical properties suitable for oral as well as parenteral administration.
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Affiliation(s)
- Sunil Kumar Singh
- Discovery Chemistry, Discovery Research-Dr. Reddy's Laboratories Ltd, Bollaram Road, Miyapur, Hyderabad 500 049, India.
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