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Balti M, Dridi K, Lotfi El Efrit M. An Efficient One-Pot Synthesis of Some New Substituted 1,2,3,5-Thiatriazolidin-4-one 1,1-Dioxides. HETEROCYCLES 2014. [DOI: 10.3987/com-14-12980] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Dehamchia M, Régaïnia Z. Conventional and microwave-assisted solvent-free synthesis of fused [1,2,5]thiadiazolo[3,4-b]quinoxaline-2,2-dioxide derivatives. J Sulphur Chem 2012. [DOI: 10.1080/17415993.2012.729589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Mohamed Dehamchia
- a Laboratory of Molecular Design and Synthesis, Department of Chemistry , Katholieke Universiteit Leuven , Celestijnenlaan 200F, B-3001 , Leuven , Belgium
- b Laboratory of Applied Organic Chemistry, Chemistry of Heterocycles Group, Department of Chemistry , Badji Mokhtar University of Annaba , PO Box 12, Annaba , 23000 , Algeria
| | - Zine Régaïnia
- a Laboratory of Molecular Design and Synthesis, Department of Chemistry , Katholieke Universiteit Leuven , Celestijnenlaan 200F, B-3001 , Leuven , Belgium
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3
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Dehamchia M, Regainia Z. Synthesis of new fused benzothiadiazepines and macrocyclic sulfamides starting from n,n-disubstituted sulfamides and n(boc)-sulfamides. ISRN ORGANIC CHEMISTRY 2012; 2012:810938. [PMID: 24052851 PMCID: PMC3767331 DOI: 10.5402/2012/810938] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Accepted: 02/02/2012] [Indexed: 11/23/2022]
Abstract
Herein, we describe an efficient one-step synthesis of new fused benzothiadiazepine-1,1-dioxides and macrocyclic sulfamides. The synthesis of these compounds was achieved in moderate yields starting from previously described N,N′-disubstituted symmetric sulfamides and N-tert-butoxycarbonyl, N′-alkyl sulfamide. The chemical structures of all the new compounds reported in this work were confirmed by NMR, IR, and mass spectrometry. These compounds are beneficial building blocks that can be used in deriving new chemical entities that exert a wide spectrum of pharmacological activities.
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Affiliation(s)
- Mohamed Dehamchia
- Chemistry of Heterocycles Group, Laboratory of Applied Organic Chemistry, Department of Chemistry, Faculty of Sciences, University of Annaba, P.O. Box 12, Annaba 23000, Algeria ; Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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Dou D, Mandadapu SR, Alliston KR, Kim Y, Chang KO, Groutas WC. Design and synthesis of inhibitors of noroviruses by scaffold hopping. Bioorg Med Chem 2011; 19:5749-55. [PMID: 21893416 DOI: 10.1016/j.bmc.2011.08.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2011] [Revised: 08/06/2011] [Accepted: 08/15/2011] [Indexed: 11/30/2022]
Abstract
A scaffold hopping strategy was employed to identify new chemotypes that inhibit noroviruses. The replacement of the cyclosulfamide scaffold by an array of heterocyclic scaffolds lead to the identification of additional series of compounds that possessed anti-norovirus activity in a cell-based replicon system.
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Affiliation(s)
- Dengfeng Dou
- Department of Chemistry, Wichita State University, Wichita, KS 67260, United States
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Ribeiro JKC, Cunha DDS, Fook JMSLL, Sales MP. New properties of the soybean trypsin inhibitor: Inhibition of human neutrophil elastase and its effect on acute pulmonary injury. Eur J Pharmacol 2010; 644:238-44. [PMID: 20624384 DOI: 10.1016/j.ejphar.2010.06.067] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Revised: 06/11/2010] [Accepted: 06/24/2010] [Indexed: 11/21/2022]
Abstract
Seeds from legumes including the Gilcine max are known to be a rich source of protease inhibitors. The soybean Kunitz trypsin inhibitors (SKTIs) have been well characterised and have been found to exhibit many biological activities. However their effects on inflammatory diseases have not been studied to date. In this study, SKTI was purified using anion exchange chromatography using a Resource Q column. The purified protein was able to inhibit human neutrophil elastase (HNE) and bovine trypsin. Purified SKTI inhibited HNE with an IC(50) value of 8mug or 0.3nM. At this concentration SKTI showed neither cytotoxic nor haemolytic effects on human blood cell populations. SKTI showed no deleterious effects on organs, blood cells or the hepatic enzymes ALT and AST in the mouse model of acute systemic toxicity. Human neutrophils incubated with SKTI released less HNE than control neutrophils when stimulated with PAF or fMLP (83.1% and 70% respectively). These results showed that SKTI affected both pathways of elastase release by PAF and fMLP stimuli, suggesting that SKTI is an antagonist of fMLP/PAF receptors. In an in vivo mouse model of LPS acute lung injury, SKTI significantly suppressed the inflammatory effects caused by elastase in a dose-dependent manner. Histological sections stained by hematoxylin/eosin confirmed this decrease in inflammation. These results showed that SKTI could be used as a pharmacological agent for the therapy of many inflammatory diseases.
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Affiliation(s)
- Jannison K C Ribeiro
- Laboratório de Química e Função de Proteínas Bioativas, Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte 59072-970 Natal, RN, Brazil
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6
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Dou D, Viwanathan P, Li Y, He G, Alliston KR, Lushington GH, Brown-Clay JD, Padmanabhan R, Groutas WC. Design, synthesis, and in vitro evaluation of potential West Nile virus protease inhibitors based on the 1-oxo-1,2,3,4-tetrahydroisoquinoline and 1-oxo-1,2-dihydroisoquinoline scaffolds. ACTA ACUST UNITED AC 2010; 12:836-43. [PMID: 20882963 DOI: 10.1021/cc100091h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The 1-oxo-1, 2, 3, 4-tetrahydroisoquinoline and 1-Oxo-1, 2-dihydroisoquinoline scaffolds were utilized in the design and solution phase synthesis of focused libraries of compounds for screening against West Nile Virus (WNV) protease. Exploratory studies have led to the identification of a WNV protease inhibitor (a 1-oxo-1, 2-dihydroisoquinoline-based derivative, 12j) which could potentially serve as a launching pad for a hit-to-lead optimization campaign. The identified hit was devoid of any inhibitory activity toward a panel of mammalian serine proteases.
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Affiliation(s)
- Dengfeng Dou
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260, USA
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Li Y, Dou D, He G, Lushington GH, Groutas WC. Mechanism-based inhibitors of serine proteases with high selectivity through optimization of S' subsite binding. Bioorg Med Chem 2009; 17:3536-42. [PMID: 19394830 PMCID: PMC2853036 DOI: 10.1016/j.bmc.2009.04.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2009] [Revised: 04/08/2009] [Accepted: 04/09/2009] [Indexed: 01/21/2023]
Abstract
A series of mechanism-based inhibitors designed to interact with the S' subsites of serine proteases was synthesized and their inhibitory activity toward the closely-related serine proteases human neutrophil elastase (HNE) and proteinase 3 (PR 3) was investigated. The compounds were found to be time-dependent inhibitors of HNE and were devoid of any inhibitory activity toward PR 3. The results suggest that highly selective inhibitors of serine proteases whose primary substrate specificity and active sites are similar can be identified by exploiting differences in their S' subsites. The best inhibitor (compound 16) had a k(inact)/K(I) value of 4580 M(-1)s(-1).
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Affiliation(s)
- Yi Li
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260
| | - Dengfeng Dou
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260
| | - Guijia He
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260
| | - Gerald H. Lushington
- Molecular Graphics and Modeling Laboratory, The University of Kansas, Lawrence, KS 66045
| | - William C. Groutas
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260
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Yang Q, Li Y, Dou D, Gan X, Mohan S, Groutas CS, Stevenson LE, Lai Z, Alliston KR, Zhong J, Williams TD, Groutas WC. Inhibition of serine proteases by a new class of cyclosulfamide-based carbamylating agents. Arch Biochem Biophys 2008; 475:115-20. [PMID: 18457652 PMCID: PMC2492831 DOI: 10.1016/j.abb.2008.04.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2008] [Revised: 04/15/2008] [Accepted: 04/16/2008] [Indexed: 01/05/2023]
Abstract
A new class of carbamylating agents based on the cyclosulfamide scaffold is reported. These compounds were found to be efficient time-dependent inhibitors of human neutrophil elastase (HNE). Exploitation of the three sites of diversity present in the cyclosulfamide scaffold yielded compounds which inhibited HNE but not proteinase 3 (PR 3) or bovine trypsin. The findings reported herein suggest that the introduction of appropriate recognition elements into the cyclosulfamide scaffold may lead to highly selective agents of potential value in the design of activity-based probes suitable for investigating proteases associated with the pathogenesis of chronic obstructive pulmonary disease.
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Affiliation(s)
- Qingliang Yang
- Department of Chemistry, Wichita State University, 1845 N Fairmount Avenue, Wichita, KS 67260, USA
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Huang W, Yamamoto Y, Li Y, Dou D, Alliston KR, Hanzlik RP, Williams TD, Groutas WC. X-ray snapshot of the mechanism of inactivation of human neutrophil elastase by 1,2,5-thiadiazolidin-3-one 1,1-dioxide derivatives. J Med Chem 2008; 51:2003-8. [PMID: 18318470 DOI: 10.1021/jm700966p] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The mechanism of action of a general class of mechanism-based inhibitors of serine proteases, including human neutrophil elastase (HNE), has been elucidated by determining the X-ray crystal structure of an enzyme-inhibitor complex. The captured intermediate indicates that processing of inhibitor by the enzyme generates an N-sulfonyl imine functionality that is tethered to Ser195, in accordance with the postulated mechanism of action of this class of inhibitors. The identity of the HNE-N-sulfonyl imine species was further corroborated using electrospray ionization mass spectrometry.
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Affiliation(s)
- Weijun Huang
- Department of Chemistry, Wichita State University, Wichita, KS 67260, USA
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Li Y, Yang Q, Dou D, Alliston KR, Groutas WC. Inactivation of human neutrophil elastase by 1,2,5-thiadiazolidin-3-one 1,1 dioxide-based sulfonamides. Bioorg Med Chem 2008; 16:692-8. [PMID: 17976994 PMCID: PMC2267890 DOI: 10.1016/j.bmc.2007.10.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2007] [Revised: 10/10/2007] [Accepted: 10/12/2007] [Indexed: 11/17/2022]
Abstract
The interaction of a series of 1,2,5-thiadiazolidin-3-one 1,1 dioxide-based sulfonamides with neutrophil-derived serine proteases was investigated. The nature of the amino acid component, believed to be oriented toward the S' subsites, had a profound effect on enzyme selectivity. This series of compounds were found to be potent, time-dependent inhibitors of human neutrophil elastase (HNE) and were devoid of any inhibitory activity toward neutrophil proteinase 3 (PR 3) and cathepsin G (Cat G). The results of these studies demonstrate that exploitation of differences in the S' subsites of HNE and PR 3 can lead to highly selective inhibitors of HNE.
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Affiliation(s)
- Yi Li
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260
| | - Qingliang Yang
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260
| | - Dengfeng Dou
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260
| | - Kevin R. Alliston
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260
| | - William C. Groutas
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260
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Bendjeddou A, Djebbar H, Berredjem M, Hattab Z, Regainia Z, Aouf NE. Cyclosulfamides as Constraint Dipeptides: The Synthesis and Structure of Chiral Substituted 1,2,5-Thiadiazolidine 1,1-Dioxides: Evaluation of the Toxicity. PHOSPHORUS SULFUR 2007. [DOI: 10.1080/10426500500327014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Amel Bendjeddou
- a Laboratoire de Chimie Organique Appliquée, Groupe de Chimie Bioorganique, Faculté des Sciences, Département de Chimie , Université d'Annaba , Algérie
| | - Houria Djebbar
- a Laboratoire de Chimie Organique Appliquée, Groupe de Chimie Bioorganique, Faculté des Sciences, Département de Chimie , Université d'Annaba , Algérie
| | - Malika Berredjem
- a Laboratoire de Chimie Organique Appliquée, Groupe de Chimie Bioorganique, Faculté des Sciences, Département de Chimie , Université d'Annaba , Algérie
| | - Z'Hour Hattab
- a Laboratoire de Chimie Organique Appliquée, Groupe de Chimie Bioorganique, Faculté des Sciences, Département de Chimie , Université d'Annaba , Algérie
| | - Zine Regainia
- a Laboratoire de Chimie Organique Appliquée, Groupe de Chimie Bioorganique, Faculté des Sciences, Département de Chimie , Université d'Annaba , Algérie
| | - Nour-Eddine Aouf
- a Laboratoire de Chimie Organique Appliquée, Groupe de Chimie Bioorganique, Faculté des Sciences, Département de Chimie , Université d'Annaba , Algérie
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An efficient one-step regiospecific synthesis of novel isoxazolines and isoxazoles of N-substituted saccharin derivatives through solvent-free microwave-assisted [3+2] cycloaddition. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.11.067] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Winum JY, Scozzafava A, Montero JL, Supuran CT. Therapeutic potential of sulfamides as enzyme inhibitors. Med Res Rev 2006; 26:767-92. [PMID: 16710859 DOI: 10.1002/med.20068] [Citation(s) in RCA: 155] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Sulfamide, a quite simple molecule incorporating the sulfonamide functionality, widely used by medicinal chemists for the design of a host of biologically active derivatives with pharmacological applications, may give rise to at least five types of derivatives, by substituting one to four hydrogen atoms present in it, which show specific biological activities. Recently, some of these compounds started to be exploited for the design of many types of therapeutic agents. Among the enzymes for which sulfamide-based inhibitors were designed, are the carbonic anhydrases (CAs), a large number of proteases belonging to the aspartic protease (HIV-1 protease, gamma-secretase), serine protease (elastase, chymase, tryptase, and thrombin among others), and metalloprotease (carboxypeptidase A (CPA) and matrix metalloproteinases (MMP)) families. Some steroid sulfatase (STS) and protein tyrosine phosphatase inhibitors belonging to the sulfamide class of derivatives have also been reported. In all these compounds, many of which show low nanomolar affinity for the target enzymes for which they have been designed, the free or substituted sulfamide moiety plays important roles for the binding of the inhibitor to the active site cavity, either by directly coordinating to a metal ion found in some metalloenzymes (CAs, CPA, STS), usually by means of one of the nitrogen atoms present in the sulfamide motif, or as in the case of the cyclic sulfamides acting as HIV protease inhibitors, interacting with the catalytically critical aspartic acid residues of the active site by means of an oxygen atom belonging to the HN-SO2-NH motif, which substitutes a catalytically essential water molecule. In other cases, the sulfamide moiety is important for inducing desired physico-chemical properties to the drug-like compounds incorporating it, such as enhanced water solubility, better bioavailability, etc., because of the intrinsic properties of this highly polarized moiety when attached to an organic scaffold. This interesting motif is thus of great value for the design of pharmacological agents with a lot of applications.
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Affiliation(s)
- Jean-Yves Winum
- Université Montpellier II, Laboratoire de Chimie Biomoléculaire, UMR 5032, Ecole Nationale Supérieure de Chimie de Montpellier, 8 rue de l'Ecole Normale, 34296 Montpellier Cedex, France.
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Winum JY, Scozzafava A, Montero JL, Supuran CT. The sulfamide motif in the design of enzyme inhibitors. Expert Opin Ther Pat 2005; 16:27-47. [DOI: 10.1517/13543776.16.1.27] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Bendjeddou A, Djeribi R, Regainia Z, Aouf NE. N,N'-SUBStituted 1,2,5 thiadiazolidine 1,1-dioxides: synthesis, selected chemical and spectral proprieties and antimicrobial evaluation. Molecules 2005; 10:1387-98. [PMID: 18007534 PMCID: PMC6147672 DOI: 10.3390/10111387] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2005] [Revised: 09/05/2005] [Accepted: 09/10/2005] [Indexed: 11/25/2022] Open
Abstract
The sulfamide functional group is increasingly relevant in both medicinal and bioorganic chemistry. We report here practical access to a series of N2,N5-substituted five-membered cyclosulfamides. The five-membered heterocyclic motif was prepared starting from proteogenic amino acids and chlorosulfonyl isocyanate via the Mitsunobu reaction. Selected chemical and spectral proprieties and the antimicrobial evaluation of these compounds are detailed.
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Fook JMSLL, Macedo LLP, Moura GEDD, Teixeira FM, Oliveira AS, Queiroz AFS, Sales MP. A serine proteinase inhibitor isolated from Tamarindus indica seeds and its effects on the release of human neutrophil elastase. Life Sci 2005; 76:2881-91. [PMID: 15820500 DOI: 10.1016/j.lfs.2004.10.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2004] [Accepted: 10/05/2004] [Indexed: 10/25/2022]
Abstract
Proteinaceous inhibitors with high inhibitory activities against human neutrophil elastase (HNE) were found in seeds of the Tamarind tree (Tamarindus indica). A serine proteinase inhibitor denoted PG50 was purified using ammonium sulphate and acetone precipitation followed by Sephacryl S-300 and Sephadex G-50 gel filtration chromatographies. Inhibitor PG50 showed a Mr of 14.9 K on Sephadex G-50 calibrated column and a Mr of 11.6 kDa on sodium dodecyl sulfate-polyacrylamide gel electrophoresis. PG50 had selective activity while cysteine proteinases (papain and bromelain) and serine proteinases (porcine pancreatic elastase and bovine chymotrypsin) were not inhibited, it was strongly effective against serine proteinases such as bovine trypsin and isolated human neutrophil elastase. The IC50 value was determined to be 55.96 microg.mL-1. PG50 showed neither cytotoxic nor haemolytic activity on human blood cells. After pre-incubation of PG50 with cytochalasin B, the exocytosis of elastase was initiated using PAF and fMLP. PG50 exhibited different inhibition on elastase release by PAF, at 44.6% and on release by fMLP, at 28.4%. These results showed that PG50 preferentially affected elastase release by PAF stimuli and this may indicate selective inhibition on PAF receptors.
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Affiliation(s)
- J M S L L Fook
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário, 59072-970, Natal, RN, Brasil
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Five-membered ring systems: with N and S (Se) atoms. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0959-6380(05)80331-9] [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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