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Ragab A, Ibrahim SA, Aboul-Magd DS, Baren MH. One-pot synthesis of pyrazolo[4,3- d]thiazole derivatives containing α-aminophosphonate as potential Mur A inhibitors against MDR pathogens with radiosterilization and molecular modeling simulation. RSC Adv 2023; 13:34756-34771. [PMID: 38035237 PMCID: PMC10685179 DOI: 10.1039/d3ra07040a] [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: 10/16/2023] [Accepted: 11/14/2023] [Indexed: 12/02/2023] Open
Abstract
The present study involves the synthesis of a new series of α-aminophosphonate derivatives in good yields with a simple workup via the Kabachnik-Fields reaction using lithium perchlorate (LiClO4) as a catalyst to facilitate the reaction. All the newly synthesized compounds were confirmed using various physical, spectroscopic, and analytical data, and the obtained results correlated with the proposed molecular structure. The in vitro antimicrobial activities of each compound were evaluated against different clinical isolates. The results indicated that among these derivatives, two compounds (5a and 5b) were the most active and displayed potent activity with MICs in the range from 0.06 to 0.25 μg mL-1 compared with fosfomycin and fluconazole as standard antibiotics. Moreover, the synthesized phosphonates displayed a broad spectrum of bactericidal and fungicidal activities depending on MICs, MBCs/MFCs, and the time-kill kinetics. In addition, the checkerboard assay showed synergistic and partial synergistic activities between the active compounds combined with fosfomycin and fluconazole. Furthermore, the SEM images showed distinct ruptures of the OM integrity of the FOS-R E. coli at their MICs, which was further indicated by the increased EtBr accumulation within the bacterial cells. Moreover, active derivatives revealed MurA inhibitory activity with IC50 values of 3.8 ± 0.39 and 4.5 ± 0.23 μM compared with fosfomycin (IC50 = 12.7 ± 0.27 μM). To our surprise, exposing 5a and 5b compounds to different gamma radiation doses revealed that 7.0 kGy eradicated the microbial load completely. Finally, the results of quantum chemical study supported the binding mode obtained from the docking study performed inside the active site of MurA (PDB: 1UAE), suggesting that these phosphonates may be promising safe candidates for MDR infection therapy clinical trials with no toxic effects on the normal human cells.
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Affiliation(s)
- Ahmed Ragab
- Chemistry Department, Faculty of Science (Boys), Al-Azhar University Nasr City Cairo 11884 Egypt
| | - Seham A Ibrahim
- Chemistry Department, Faculty of Science, Tanta University Tanta 31527 Egypt
| | - Dina S Aboul-Magd
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority Egypt
| | - Mohamed H Baren
- Chemistry Department, Faculty of Science, Tanta University Tanta 31527 Egypt
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Natarajan K, Sharma S, Irfana Jesin CP, Kataria R, Nandi GC. One-pot synthesis of α-sulfoximinophosphonate via Kabachnik-Fields reaction. Org Biomol Chem 2022; 20:7036-7039. [PMID: 36040442 DOI: 10.1039/d2ob01355j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we disclose a novel approach for the synthesis of hitherto unknown α-sulfoximinophosphonate via the Kabachnik-Fields reaction of aldehyde, dialkylphosphite and sulfoximine in the presence of InCl3 in THF at 70 °C. α-Sulfoximinophosphonate is synthesized in good yields and its synthetic utilities are proved by functionalizing bromine through the Pd-catalyzed Suzuki-Miyaura cross-coupling reaction and reduction of a nitro group through the Béchamp reduction.
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Affiliation(s)
- K Natarajan
- Department of Chemistry, National Institute of Technology-Tiruchirappalli 620015, Tamil Nadu, India.
| | - Suraj Sharma
- Department of Chemistry, National Institute of Technology-Tiruchirappalli 620015, Tamil Nadu, India.
| | - C P Irfana Jesin
- Department of Chemistry, National Institute of Technology-Tiruchirappalli 620015, Tamil Nadu, India.
| | - Ramesh Kataria
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh-160014, India
| | - Ganesh Chandra Nandi
- Department of Chemistry, National Institute of Technology-Tiruchirappalli 620015, Tamil Nadu, India.
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3
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Afshari M, Varma RS, Saghanezhad SJ. Catalytic Applications of Heteropoly acid-Supported Nanomaterials in Synthetic Transformations and Environmental Remediation. COMMENT INORG CHEM 2022. [DOI: 10.1080/02603594.2022.2109019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Mozhgan Afshari
- Department of Chemistry, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran
| | - Rajender S. Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University in Olomouc, Olomouc, Czech Republic
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Amira A, Aouf Z, K'tir H, Chemam Y, Ghodbane R, Zerrouki R, Aouf N. Recent Advances in the Synthesis of α‐Aminophosphonates: A Review. ChemistrySelect 2021. [DOI: 10.1002/slct.202101360] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Aϊcha Amira
- Department of Chemistry Applied Organic Chemistry Laboratory, Bioorganic Chemistry Group University of Badji Mokhtar-Annaba, Box 12 23000 Annaba Algeria
- National Higher School of Mining and Metallurgy Amar Laskri Annaba Algeria
| | - Zineb Aouf
- Department of Chemistry Applied Organic Chemistry Laboratory, Bioorganic Chemistry Group University of Badji Mokhtar-Annaba, Box 12 23000 Annaba Algeria
| | - Hacène K'tir
- Department of Chemistry Applied Organic Chemistry Laboratory, Bioorganic Chemistry Group University of Badji Mokhtar-Annaba, Box 12 23000 Annaba Algeria
| | - Yasmine Chemam
- Department of Chemistry Applied Organic Chemistry Laboratory, Bioorganic Chemistry Group University of Badji Mokhtar-Annaba, Box 12 23000 Annaba Algeria
| | - Racha Ghodbane
- Department of Chemistry Applied Organic Chemistry Laboratory, Bioorganic Chemistry Group University of Badji Mokhtar-Annaba, Box 12 23000 Annaba Algeria
| | - Rachida Zerrouki
- University of Limoges PEIRENE Laboratory SylvaLim Group 123 Avenue Albert Thomas Limoges cedex 87060 Limoges France
| | - Nour‐Eddine Aouf
- Department of Chemistry Applied Organic Chemistry Laboratory, Bioorganic Chemistry Group University of Badji Mokhtar-Annaba, Box 12 23000 Annaba Algeria
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5
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Wtorek K, Janecka A. Potential of Nociceptin/Orphanin FQ Peptide Analogs for Drug Development. Chem Biodivers 2021; 18:e2000871. [PMID: 33351271 DOI: 10.1002/cbdv.202000871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 11/27/2020] [Indexed: 12/23/2022]
Abstract
Nociceptin receptor (NOP) belongs to the family of opioid receptors but was discovered and characterized much later than the so called classical opioid receptors, μ, δ and κ (or MOP, DOP and KOP, resp.). Nociceptin/orphanin FQ (N/OFQ) is the endogenous ligand of this receptor and it controls numerous important functions in the central nervous system and in the periphery, so its analogs may be developed as innovative drugs for the treatment of a variety of conditions and pathological states. Availability of potent and selective ligands with high affinity to NOP receptor is essential to fully understand the role of NOP-N/OFQ system in the body, which in turn may lead to designing novel therapeutics. Here, we have focused on reviewing the structure of potent peptide-based agonists, antagonists, biased analogs and bivalent ligands that target NOP receptor.
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Affiliation(s)
- Karol Wtorek
- Department of Biomolecular Chemistry, Medical University of Lodz, Mazowiecka 6/8, PL-92-215 Lodz, Poland
| | - Anna Janecka
- Department of Biomolecular Chemistry, Medical University of Lodz, Mazowiecka 6/8, PL-92-215 Lodz, Poland
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Sravya G, Balakrishna A, Zyryanov GV, Mohan G, Reddy CS, Bakthavatchala Reddy N. Synthesis of α-aminophosphonates by the Kabachnik-Fields reaction. PHOSPHORUS SULFUR 2020. [DOI: 10.1080/10426507.2020.1854258] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- G. Sravya
- Chemical Engineering Institute, Ural Federal University, Yekaterinburg, Russian Federation
| | - A. Balakrishna
- Rajeev Gandhi Memorial College of Engineering and Technology (Autonomous), Nandyal, Andhra Pradesh, India
| | - Grigory V. Zyryanov
- Chemical Engineering Institute, Ural Federal University, Yekaterinburg, Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis, Ural Division of the Russian Academy of Sciences, Yekaterinburg, Russian Federation
| | - G. Mohan
- Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
- DST-PURSE Centre, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - C. Suresh Reddy
- Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
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Kandula MKR, Gundluru M, Nemallapudi BR, Gundala S, Kotha P, Zyryanov GV, Chadive S, Cirandur SR. Synthesis, antioxidant activity, and α‐glucosidase enzyme inhibition of α‐aminophosphonate derivatives bearing piperazine‐1,2,3‐triazole moiety. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4157] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Mohan Gundluru
- Department of Chemistry Sri Venkateswara University Tirupati India
- DST‐PURSE Centre Sri Venkateswara University Tirupati India
| | | | - Sravya Gundala
- Department of Organic and Biomolecular Chemistry, Chemical Engineering Institute Ural Federal University Yekaterinburg Russia
| | - Peddanna Kotha
- Department of Bio‐Chemistry Sri Venkateswara University Tirupati India
| | - Grigory V. Zyryanov
- Department of Organic and Biomolecular Chemistry, Chemical Engineering Institute Ural Federal University Yekaterinburg Russia
- I. Ya. Postovsky Institute of Organic Synthesis Ural Division of the Russian Academy of Sciences Yekaterinburg Russia
| | - Sridevi Chadive
- Department of Chemistry SPW Degree and PG College Tirupati India
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Todorov P, Peneva P, Tchekalarova J, Rangelov M, Georgieva S, Todorova N. Synthesis, characterization and anticonvulsant activity of new series of N-modified analogues of VV-hemorphin-5 with aminophosphonate moiety. Amino Acids 2019; 51:1527-1545. [PMID: 31576456 DOI: 10.1007/s00726-019-02789-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 09/17/2019] [Indexed: 12/29/2022]
Abstract
A new series of N-modified analogues of the VV-hemorphin-5 with aminophosphonate moiety have been synthesized, characterized and investigated for anticonvulsant activity. The novel peptide analogues were prepared by solid-phase peptide synthesis-Fmoc-strategy and were evaluated in the timed intravenous pentylenetetrazole infusion test (ivPTZ) and 6-Hz psychomotor seizure test in mice. The acute neurological toxicity was determined using the rotarod test. The redox potentials at glass carbonic electrode (GC) and the acid/base properties as pKa values of these peptide analogues were compared with the electrochemical behaviour of tyrosine- and tryptophan-containing peptides using different voltamperometric modes. Among the five tested peptide analogues, V3p was the most active against the ivPTZ test with effect comparable to that of the VV-hemorphin-5 (V1) used as a positive control. Dose-dependent elevation of the seizure threshold for myoclonic twitch and generalized clonic seizures was observed after i.c.v. administration of V2p, V4p and V5p as well as for forelimbs tonus in V4p peptides. The peptide analogues V2p-V5p were able to suppress dose-dependent psychomotor seizures in the 6-Hz test. In contrast, the V6p peptide showed either a pro-convulsant effect in the iv PTZ test or was inactive in the 6-Hz test. No changes in motor coordination were noted with the novel peptides. Docking study results suggest that kappa opioid receptor binding could be the mechanism of action of peptide derivatives with anticonvulsant activity. The results suggest that incorporation of aminophosphonate moiety at position 1 of the VV-hemorphin-5 scaffold deserve further evaluation in models of epilepsy and derivatization.
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Affiliation(s)
- Petar Todorov
- Department of Organic Chemistry, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria.
| | - Petia Peneva
- Department of Organic Chemistry, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria.,Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria
| | - Jana Tchekalarova
- Institute of Neurobiology, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria
| | - Miroslav Rangelov
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria
| | - Stela Georgieva
- Department of Analytical Chemistry, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria
| | - Nadezhda Todorova
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria
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New 2-Oxoindolin Phosphonates as Novel Agents to Treat Cancer: A Green Synthesis and Molecular Modeling. Molecules 2018; 23:molecules23081981. [PMID: 30096835 PMCID: PMC6222476 DOI: 10.3390/molecules23081981] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/23/2018] [Accepted: 08/05/2018] [Indexed: 12/15/2022] Open
Abstract
The work reports the facile synthesis of novel α-aminophosphonate derivatives coupled with indole-2,3-dione moieties, namely the diethyl(substituted phenyl/heteroaryl)(2-(2-oxoindolin-3-ylidene)hydrazinyl)methylphosphonates derivatives 4(a⁻n). One-pot three component Kabachnik-Fields reactions were used to synthesize these derivatives. The reaction was carried out at room temperature by stirring in presence of ceric ammonium nitrate (CAN) as a green catalyst. The structures of the synthesized compounds were established by spectral studies. The synthesized derivatives 4(a⁻n) were evaluated for their in vitro anticancer activity against six human cancer cell lines by the SRB assay method. The cancer cell lines used in this research work are SK-MEL-2 (melanoma), MCF-7 (breast cancer), IMR-32 (neuroblastoma) MG-63 (human osteosarcoma), HT-29 (human colon cancer) and Hep-G2 (human hepatoma). All the synthesized derivatives inhibited the cell proliferation. Importantly, all the target compounds showed no cytotoxicity towards normal tissue cells (GI50 > 250 µM). A docking study was performed to predict the mode of action. Docking results indicate that the compounds have good binding with the enzyme tyrosine kinase as well as with microtubules, which makes them dual inhibitors. The result of in-silico bioavailability studies suggests that the compounds from the present series have good oral drug-like properties and are non-toxic in nature. In vivo acute oral toxicity study results indicate that the compounds can be considered safe, and therefore could be developed in the future as good anticancer agents or as leads for the design and synthesis of novel anticancer agents.
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10
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Jiménez-Andreu MM, Sayago FJ, Cativiela C. An Improved Synthesis of the Antibiotic Dehydrophos. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800689] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- M. Mercedes Jiménez-Andreu
- Departamento de Química Orgánica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); CSIC-Universidad de Zaragoza; 50009 Zaragoza Spain
| | - Francisco J. Sayago
- Departamento de Química Orgánica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); CSIC-Universidad de Zaragoza; 50009 Zaragoza Spain
| | - Carlos Cativiela
- Departamento de Química Orgánica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); CSIC-Universidad de Zaragoza; 50009 Zaragoza Spain
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11
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Abstract
The nociceptin/orphanin FQ (N/OFQ)-N/OFQ peptide (NOP) receptor system is widely distributed at both the peripheral and central level where it modulates important biological functions with increasing therapeutic implications. This chapter wants to provide a comprehensive and updated overview focused on the available structure-activity relationship studies on NOP receptor peptide ligands developed through different rational approaches. Punctual modifications and cyclizations of the N/OFQ sequence have been properly combined furnishing potent NOP selective ligands with different pharmacological activities (full and partial agonists, pure antagonists) and enhanced metabolic stability in vivo. The screening of peptide libraries provided a second family of NOP ligands that have been successfully optimized. Moreover, recent findings suggest the possibility to apply different multimerization strategies for the realization of multi-target NOP/opioid receptor ligands or tetrabranched N/OFQ derivatives with extraordinarily prolonged duration of action in vivo. The diverse approaches led to the identification of important pharmacological tools along with drug candidates currently in clinical development such as Rec 0438 (aka UFP-112) for the treatment of overactive bladder and SER 100 (aka ZP120) for the clinical management of systolic hypertension.
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Affiliation(s)
- Delia Preti
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy
| | - Girolamo Caló
- Department of Medical Sciences, Section of Pharmacology, University of Ferrara and National Institute of Neurosciences, Ferrara, Italy
| | - Remo Guerrini
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy.
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12
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Reddy NB, Sundar CS, Rani CR, Rao KUM, Nayak SK, Reddy CS. Triton X-100 catalyzed synthesis of α-aminophosphonates. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2011.07.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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14
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Naydenova E, Todorov P, Zamfirova R. Synthesis and biological activity of small peptides as NOP and opioid receptors' ligands: view on current developments. VITAMINS AND HORMONES 2015; 97:123-46. [PMID: 25677770 DOI: 10.1016/bs.vh.2014.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
The heptadecapeptide nociceptin, also called orphanin FQ (N/OFQ), is the endogenous agonist of the N/OFQ peptide receptor (NOP receptor) and is involved in several central nervous system pathways, such as nociception, reward, tolerance, and feeding. The discovery of small molecule ligands for NOP is being actively pursued for several therapeutic applications. This review presents overview of the several recently reported NOP ligands (agonists and antagonists), with an emphasis of the structural features that may be important for modulating the intrinsic activity of these ligands. In addition, a brief account on the characterization of newly synthesized ligands of NOP receptor with aminophosphonate moiety and β-tryptophan analogues will be presented.
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MESH Headings
- Analgesics, Opioid/chemistry
- Analgesics, Opioid/metabolism
- Analgesics, Opioid/pharmacology
- Animals
- Drug Design
- Drugs, Investigational/chemistry
- Drugs, Investigational/metabolism
- Drugs, Investigational/pharmacology
- Humans
- Ligands
- Molecular Structure
- Narcotic Antagonists/chemistry
- Narcotic Antagonists/metabolism
- Narcotic Antagonists/pharmacology
- Nerve Tissue Proteins/agonists
- Nerve Tissue Proteins/antagonists & inhibitors
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/metabolism
- Neurons/drug effects
- Neurons/metabolism
- Oligopeptides/chemistry
- Oligopeptides/metabolism
- Oligopeptides/pharmacology
- Opioid Peptides/chemistry
- Opioid Peptides/metabolism
- Opioid Peptides/pharmacology
- Peptides/chemistry
- Peptides/metabolism
- Peptides/pharmacology
- Receptors, Opioid/agonists
- Receptors, Opioid/chemistry
- Receptors, Opioid/genetics
- Receptors, Opioid/metabolism
- Recombinant Proteins/chemistry
- Recombinant Proteins/metabolism
- Nociceptin Receptor
- Nociceptin
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Affiliation(s)
- Emilia Naydenova
- Department of Organic Chemistry, University of Chemical Technology and Metallurgy, Sofia, Bulgaria.
| | - Petar Todorov
- Department of Organic Chemistry, University of Chemical Technology and Metallurgy, Sofia, Bulgaria
| | - Rositza Zamfirova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
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Bouzina A, Berredjem M, Bouacida S, Merazig H, Aouf NE. A greener procedure for the synthesis of α-ureidophosphonates under ultrasound irradiation. An X-ray crystallographic study. RSC Adv 2015. [DOI: 10.1039/c5ra19886k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis of α-ureidophosphonates via a one-pot three-component reaction using ultrasonic irradiation under solvent- and catalyst-free conditions at 75° is developed. The products were obtained in excellent yields within short reaction times.
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Affiliation(s)
- Abdeslem Bouzina
- Laboratory of Applied Organic Chemistry
- Synthesis of Biomolecules and Molecular Modelling Group
- Sciences Faculty
- Chemistry Department
- Badji-Mokhtar – Annaba University
| | - Malika Berredjem
- Laboratory of Applied Organic Chemistry
- Synthesis of Biomolecules and Molecular Modelling Group
- Sciences Faculty
- Chemistry Department
- Badji-Mokhtar – Annaba University
| | - Sofiane Bouacida
- Département Sciences de la Matière
- Université Oum El Bouaghi
- Algeria
- Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale
- Université Constantine 1
| | - Hocine Merazig
- Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale
- Université Constantine 1
- Constantine 25000
- Algeria
| | - Nour-eddine Aouf
- Laboratory of Applied Organic Chemistry
- Synthesis of Biomolecules and Molecular Modelling Group
- Sciences Faculty
- Chemistry Department
- Badji-Mokhtar – Annaba University
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Bocheva A, Nocheva H, Pavlov N, Todorov P, Calmès M, Martinez J, Naydenova E. Synthesis and analgesic effects of novel β2-tryptophan hexapeptide analogs. Amino Acids 2013; 45:983-8. [DOI: 10.1007/s00726-013-1555-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 06/28/2013] [Indexed: 11/24/2022]
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17
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Zamfirova R, Pavlov N, Todorov P, Mateeva P, Martinez J, Calmès M, Naydenova E. Synthesis and changes in affinity for NOP and opioid receptors of novel hexapeptides containing β2-tryptophan analogues. Bioorg Med Chem Lett 2013; 23:4052-5. [DOI: 10.1016/j.bmcl.2013.05.064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 05/15/2013] [Accepted: 05/18/2013] [Indexed: 10/26/2022]
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18
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Diphenyl (4′-(Aryldiazenyl)biphenyl-4-ylamino)(pyridin-3-yl)methylphosphonates as Azo Disperse Dyes for Dyeing Polyester Fabrics. J CHEM-NY 2013. [DOI: 10.1155/2013/308419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Diphenyl (4′-aminobiphenyl-4-ylamino)(pyridin-3-yl)methylphosphonate(1)was synthesized in 88% yield from reaction of pyridine-3-carboxaldehyde with benzidine and triphenylphosphite in the presence of titanium tetrachloride as a catalyst. Diazotization of1gave the corresponding diazonium salt2which was coupled with several hydroxyl or amino compounds to give the corresponding azo dyes3–8in 82–88% yields after crystallization. The dyes produced were applied to polyesters as disperse dyes and their fastness properties were elevated.
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Abdel-Megeed MF, Badr BE, Azaam MM, El-Hiti GA. Synthesis and Antimicrobial Activities of Diphenyl(Arylamino)(1-Phenyl-3-(Pyridin-2-Yl)-1H-Pyrazol-4-Yl)Methylphosphonates. PHOSPHORUS SULFUR 2012. [DOI: 10.1080/10426507.2012.690117] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | - Badr E. Badr
- b Department of Botany, Faculty of Science , Tanta University , Tanta , Egypt
| | - Mohamed M. Azaam
- a Department of Chemistry, Faculty of Science , Tanta University , Tanta , Egypt
| | - Gamal A. El-Hiti
- a Department of Chemistry, Faculty of Science , Tanta University , Tanta , Egypt
- c School of Chemistry , Cardiff University , Cardiff , UK
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Todorov PT, Mateeva PI, Zamfirova RN, Pavlov ND, Naydenova ED. Synthesis and biological activity of new series of N-modified analogues of the N/OFQ(1-13)NH2 with aminophosphonate moiety. Amino Acids 2012; 43:1217-23. [PMID: 22143428 DOI: 10.1007/s00726-011-1177-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Accepted: 11/22/2011] [Indexed: 11/27/2022]
Abstract
New series of N-modified analogues of the N/OFQ(1-13)NH(2) with aminophosphonate moiety have been synthesized and investigated for biological activity. These peptides were prepared by solid-phase peptide synthesis-Fmoc-strategy. The N/OFQ(1-13)NH(2) analogues were tested for agonistic activity in vitro on electrically stimulated rat vas deferens smooth-muscle preparations isolated from Wistar albino rats. Our study has shown that the selectivity of the peptides containing 1-[(methoxyphosphono)methylamino]cycloalkanecarboxylic acids to the N-side of Phe is not changed-they remain selective agonists of NOP receptors. The derivative with the largest ring (NOC-6) demonstrated efficacy similar to that of N/OFQ(1-13)NH(2), but in a 10-fold higher concentration. The agonistic activity of newly synthesized N-modified analogues of N/OFQ(1-13)NH(2) with aminophosphonate moiety was investigated for the first time.
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Affiliation(s)
- Petar T Todorov
- Department of Organic Chemistry, University of Chemical Technology and Metallurgy, Sofia, Bulgaria
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Abdel-Megeed MF, Badr BE, Azaam MM, El-Hiti GA. Synthesis and Antimicrobial Activities of a Novel Series of Heterocyclic α-Aminophosphonates. Arch Pharm (Weinheim) 2012; 345:784-9. [DOI: 10.1002/ardp.201200109] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Revised: 06/03/2012] [Accepted: 06/19/2012] [Indexed: 11/12/2022]
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Synthesis, antimicrobial and anticancer activities of a novel series of diphenyl 1-(pyridin-3-yl)ethylphosphonates. Bioorg Med Chem 2012; 20:2252-8. [DOI: 10.1016/j.bmc.2012.02.015] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 02/01/2012] [Accepted: 02/04/2012] [Indexed: 11/19/2022]
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Abstract
This paper is the thirty-third consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2010 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (Section 2), and the roles of these opioid peptides and receptors in pain and analgesia (Section 3); stress and social status (Section 4); tolerance and dependence (Section 5); learning and memory (Section 6); eating and drinking (Section 7); alcohol and drugs of abuse (Section 8); sexual activity and hormones, pregnancy, development and endocrinology (Section 9); mental illness and mood (Section 10); seizures and neurologic disorders (Section 11); electrical-related activity and neurophysiology (Section 12); general activity and locomotion (Section 13); gastrointestinal, renal and hepatic functions (Section 14); cardiovascular responses (Section 15); respiration (Section 16); and immunological responses (Section 17).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, Flushing, NY 11367, USA.
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