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Dadiboyena S, Arfaoui A, Amri H, Piedrafita FJ, Nefzi A. Diversity oriented synthesis and IKK inhibition of aminobenzimidazole tethered quinazoline-2,4-diones, thioxoquinazolin-4-ones, benzodiazepine-2,3,5-triones, isoxazoles and isoxazolines. Bioorg Med Chem Lett 2014; 25:685-9. [PMID: 25522820 DOI: 10.1016/j.bmcl.2014.11.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Revised: 11/25/2014] [Accepted: 11/27/2014] [Indexed: 10/24/2022]
Abstract
The derivatization of resin-bound aminobenzimidazole toward the parallel solid-phase synthesis of aminobenzimidazole tethered pharmacologically important heterocycles such as quinazoline-2,4-diones, thioxoquinazolin-4-ones, benzodiazepine-2,3,5-triones, isoxazoles and isoxazolines is reported. All the compounds were tested for IKK inhibition. Only one compound elicited significant inhibition of IKKε, TBK-1 and IKK2.
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Affiliation(s)
- Sureshbabu Dadiboyena
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port St. Lucie, FL 34987, USA
| | - Aïcha Arfaoui
- Laboratory of Selective Organic Chemistry & Biological Activity, Faculty of Science of Tunis, University El Manar, 2092, Tunisia
| | - Hassen Amri
- Laboratory of Selective Organic Chemistry & Biological Activity, Faculty of Science of Tunis, University El Manar, 2092, Tunisia
| | - F Javier Piedrafita
- Torrey Pines Institute for Molecular Studies, General Atomics Court, San Diego, CA 92121, USA
| | - Adel Nefzi
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port St. Lucie, FL 34987, USA.
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Synthesis and analgesic activity of alkylated, reduced and constrained oligoheterocyclic peptidomimetic analogs of Leu-enkephalin. Bioorg Med Chem Lett 2014; 24:4482-4485. [DOI: 10.1016/j.bmcl.2014.07.090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 07/29/2014] [Accepted: 07/31/2014] [Indexed: 11/21/2022]
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Kaur N, Dwivedi J, Kishore D. Solid-Phase Synthesis of Nitrogen-Containing Five-Membered Heterocycles. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2013.773352] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ghanbari MM, Yavari I, Emadi A. Et 3N-Mediated Synthesis of N-Vinylthiohydantoins from 5,5-Diarylthiohydantoins and Acetylenic Esters. JOURNAL OF CHEMICAL RESEARCH 2013. [DOI: 10.3184/174751913x13700860964396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The reactive 1:1 intermediates produced in the addition reactions between triethylamine and acetylenic esters were trapped by thiohydantoins to produce N-vinylthiohydantoins.
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Affiliation(s)
| | - Issa Yavari
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Abedin Emadi
- Chemistry Department, Marvdasht Payam Noor University, Marvdasht, Iran
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Dadiboyena S, Nefzi A. Parallel Synthesis of Structurally Diverse Aminobenzimidazole Tethered Sultams and Benzothiazepinones. Tetrahedron Lett 2012; 53:6897-6900. [PMID: 23209332 PMCID: PMC3510662 DOI: 10.1016/j.tetlet.2012.09.135] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A solid-phase methodology to construct aminobenzimidazole tethered sultams and benzothiazepinones from commercial amino acids, amines, carboxylic acids and sulfonyl chlorides is described. Coupling of Fmoc-Cys(Trt)-OH to resin-bound aminobenzimidazole scaffold provided an essential precursor for the construction of a variety of seven membered benzofused cyclic sulfonamides and thiazepinones via palladium catalyzed Buchwald-Hartwig type intramolecular cyclization.
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Affiliation(s)
- Sureshbabu Dadiboyena
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port St. Lucie, FL 34987 USA
| | - Adel Nefzi
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port St. Lucie, FL 34987 USA
- Florida Atlantic University, Boca Raton, FL 33431 USA
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Dadiboyena S, Nefzi A. Parallel Solid-Phase Synthesis of disubstituted 3-(1H-benzo[d]imidazol-2-yl)imidazolidine-2,4-diones and 3-(1H-benzo[d]imidazol-2-yl)-2-thioxoimidazolidin-4-ones. Tetrahedron Lett 2011; 52:7030-7033. [PMID: 22199408 PMCID: PMC3244722 DOI: 10.1016/j.tetlet.2011.10.064] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
A multistep approach to construct novel 3-(1H-benzo[d]imidazol-2-yl)imidazolidine-2,4-diones and 3-(1H-benzo[d]imidazol-2-yl)-2-thioxoimidazolidin-4-ones from commercially available amino acids, amines, and carboxylic acids is described. Coupling of Fmoc-amino acid to resin-bound aminobenzimidazole provided following Fmoc elimination free amine. Treatment of the free amine with 1,1'-carbonyldiimidazole or 1,1'-thiocarbonyldiimidazole furnished the corresponding hydantoins and thiohydantoins via intramolecular cyclization. The desired aminobenzimidazole tethered hydantoin or thiohydantoins were isolated in good yields.
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Affiliation(s)
- Sureshbabu Dadiboyena
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway Port St. Lucie, FL 34987, USA
| | - Adel Nefzi
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway Port St. Lucie, FL 34987, USA
- Florida Atlantic University, Boca Raton, FL 33431, USA
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Three-component reaction between 5,5-diarylthiohydantoins and acetylenic esters in the presence of trialkyl phosphite. MONATSHEFTE FUR CHEMIE 2011. [DOI: 10.1007/s00706-011-0512-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Soural M, Bouillon I, Krchnák V. Combinatorial libraries of bis-heterocyclic compounds with skeletal diversity. JOURNAL OF COMBINATORIAL CHEMISTRY 2008; 10:923-33. [PMID: 18811208 PMCID: PMC2633873 DOI: 10.1021/cc8001074] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Combinatorial solid-phase synthesis of bis-heterocyclic compounds, characterized by the presence of two heterocyclic cores connected by a spacer of variable length/structure, provided structurally heterogeneous libraries with skeletal diversity. Both heterocyclic rings were assembled on resin in a combinatorial fashion.
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Affiliation(s)
- Miroslav Soural
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Center, University of Notre Dame, Notre Dame, Indiana 46556, USA
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Xiang F, Zhang S, Lu C, Chen Z, Yang G. Novel Synthesis of 3‐Substituted 2‐Thiohydantoins via Aza‐Wittig Reaction on Poly(ethylene Glycol). SYNTHETIC COMMUN 2008. [DOI: 10.1080/00397910701845571] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Fengying Xiang
- a Faculty of Chemistry and Chemical Engineering , Hubei University, Ministry of Education Key Laboratory for the Synthesis and Applicaton of Organic Functional Molecules , Wuhan, China
| | - Shoubo Zhang
- a Faculty of Chemistry and Chemical Engineering , Hubei University, Ministry of Education Key Laboratory for the Synthesis and Applicaton of Organic Functional Molecules , Wuhan, China
| | - Cuifen Lu
- a Faculty of Chemistry and Chemical Engineering , Hubei University, Ministry of Education Key Laboratory for the Synthesis and Applicaton of Organic Functional Molecules , Wuhan, China
| | - Zuxing Chen
- a Faculty of Chemistry and Chemical Engineering , Hubei University, Ministry of Education Key Laboratory for the Synthesis and Applicaton of Organic Functional Molecules , Wuhan, China
| | - Guichun Yang
- a Faculty of Chemistry and Chemical Engineering , Hubei University, Ministry of Education Key Laboratory for the Synthesis and Applicaton of Organic Functional Molecules , Wuhan, China
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Wang X, Dixon S, Kurth MJ, Lam KS. Traceless solid-phase synthesis of 1,4-disubstituted-6-nitro-3,4-dihydro-1H-quinoline-2-ones. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.06.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Menichincheri M, Ballinari D, Bargiotti A, Bonomini L, Ceccarelli W, D'Alessio R, Fretta A, Moll J, Polucci P, Soncini C, Tibolla M, Trosset JY, Vanotti E. Catecholic flavonoids acting as telomerase inhibitors. J Med Chem 2005; 47:6466-75. [PMID: 15588081 DOI: 10.1021/jm040810b] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In recent years telomerase has been identified as a new promising target in oncology and consequently new telomerase inhibitors have been intensely explored as anticancer agents. Focused screening of several polyhydroxylated flavonoids has allowed us to identify 7,8,3',4'-tetrahydroxyflavone 1 as a new telomerase inhibitor with an interesting in vitro activity in a Flash-Plate assay (IC50 = 0.2 microM) that has been confirmed in the classical TRAP assay. Starting from this compound, we developed a medicinal chemistry program to optimize our lead, and in particular to replace one of the two catechols with potential bioisosteres. From this study, new structural analogues characterized by submicromolar potencies have been obtained. Their synthesis and biological activity are described.
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Affiliation(s)
- Maria Menichincheri
- Department of Chemistry, BU-Nerviano Medical Sciences, Viale Pasteur 10, 20014 Nerviano (MI), Italy.
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Facile solid phase synthesis of 1,2-disubstituted-6-nitro-1,4-dihydroquinazolines using a tetrafunctional scaffold. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2004.11.095] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bräse S, Gil C, Knepper K. The recent impact of solid-phase synthesis on medicinally relevant benzoannelated nitrogen heterocycles. Bioorg Med Chem 2002; 10:2415-37. [PMID: 12057632 DOI: 10.1016/s0968-0896(02)00025-1] [Citation(s) in RCA: 241] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Benzoannelated heterocycles such as benzodiazepines and indoles can be prepared efficiently through cyclization on solid supports, although no single approach is currently universal for the preparation of all benzoannelated N-heterocycle chemistries. In this review, a number of synthetic strategies for the generation of benzoannelated nitrogen heterocycles using resin-bound substrates have been described. Classical heterocycle forming reactions such as the Fischer indole, the Bischler-Napieralski tetrahydroisoquinoline, the Pictet-Spengler tetrahydro-beta-carboline, the Tsuge, the Nenitzescu and the Richter cinnoline reaction are presented. In addition, the Heck, Sonogashira, Wittig, Diels-Alder, and olefin metathesis reactions have been also used. Multicomponent reactions such as the Grieco three-component assembly have been exploited for the synthesis of heterocycles. Cyclative cleavage from the solid support is particularly suitable for the synthesis of heterocycles while particular emphasis has been focused on the synthesis of libraries and the use of combinatorial chemistry techniques. In addition, the most relevant pharmacological properties of benzoannelated nitrogen heterocycles are included.
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Affiliation(s)
- Stefan Bräse
- Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany.
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Lou B. Novel strategies for solid-phase construction of small-molecule combinatorial libraries. Drug Discov Today 2001; 6:1288-1294. [PMID: 11738971 DOI: 10.1016/s1359-6446(01)02070-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
During the past decade we witnessed a rapid advance in the new field of chemical science, combinatorial chemistry. The pharmaceutical industries invested heavily in accelerating the development of this new technology. As a result, it has become an extremely important tool in lead identification and optimization in current pharmaceutical research. It also quickly crossed the boundaries of the original chemical discipline and demonstrated great potential in many other important areas, such as searching for novel and highly efficient catalysts and superconductive material. Researchers from both academic and industrial laboratories have directed great effort towards the development of novel strategies for combinatorial synthesis.
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Affiliation(s)
- Boliang Lou
- Advanced SynTech, 9800 Bluegrass Parkway, 40299,. Tel.: +1-502-499-0122; fax: +1-502-499-0078., Louisville, KT, USA
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