1
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Feng GS, Zhao ZB, Shi L, Zhou YG. Synthesis of chiral piperazin-2-ones through palladium-catalyzed asymmetric hydrogenation of pyrazin-2-ols. Org Chem Front 2021. [DOI: 10.1039/d1qo01144h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-catalyzed asymmetric hydrogenation of pyrazines containing a tautomeric hydroxyl group was developed, providing a facile access to chiral disubstituted piperazin-2-ones with excellent diastereoselectivities and enantioselectivities.
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Affiliation(s)
- Guang-Shou Feng
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Zi-Biao Zhao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Lei Shi
- School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
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2
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The conventional turns rather than irregular γ-/β-turn secondary structures accounting for the antitumor activities of cyclic peptide Phakellistatin 6 analogs. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130881] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Zhao L, Wu J, Bao Y, Jiang S, Wang Z, Guo C, Jin Y, Qu F. Synthesis of novel isoindole-containing phakellistatin 2 analogs and the conformation features affecting their antitumor activities. NEW J CHEM 2019. [DOI: 10.1039/c9nj01832h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Two novel phakellistatin 2 analogs were synthesized and the conformational features affecting their antitumor activities were studied.
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Affiliation(s)
- Lishuang Zhao
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province
- College of Life Science and Technology
- Harbin Normal University
- Harbin
- China
| | - Jingwan Wu
- College of Chemistry & Chemical Engineering
- Harbin Normal University
- Harbin
- China
| | - Yujun Bao
- College of Chemistry & Chemical Engineering
- Harbin Normal University
- Harbin
- China
| | - Shitian Jiang
- College of Chemistry & Chemical Engineering
- Harbin Normal University
- Harbin
- China
| | - Zhiqiang Wang
- College of Chemistry & Chemical Engineering
- Harbin Normal University
- Harbin
- China
| | - Changhong Guo
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province
- College of Life Science and Technology
- Harbin Normal University
- Harbin
- China
| | - Yingxue Jin
- College of Chemistry & Chemical Engineering
- Harbin Normal University
- Harbin
- China
| | - Fengyu Qu
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province
- College of Life Science and Technology
- Harbin Normal University
- Harbin
- China
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4
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Meninno S, Vidal-Albalat A, Lattanzi A. Asymmetric Epoxidation of Alkylidenemalononitriles: Key Step for One-Pot Approach to Enantioenriched 3-Substituted Piperazin-2-ones. Org Lett 2015; 17:4348-51. [DOI: 10.1021/acs.orglett.5b02186] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e
Biologia, Università di Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy
| | - Andreu Vidal-Albalat
- Dipartimento di Chimica e
Biologia, Università di Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e
Biologia, Università di Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy
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5
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Barlow TMA, Jida M, Tourwé D, Ballet S. Efficient synthesis of conformationally constrained, amino-triazoloazepinone-containing di- and tripeptides via a one-pot Ugi-Huisgen tandem reaction. Org Biomol Chem 2015; 12:6986-9. [PMID: 25116189 DOI: 10.1039/c4ob01381f] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Herein we describe a catalyst-free procedure employing an Ugi-4CR between a β-azido-α-amino acid, propargylamine, an isocyanide and an aldehyde, followed by a thermal azide-alkyne Huisgen cycloaddition to generate a 16-member library of amino-triazoloazepinone-bearing di- and tripeptides with up to four points of diversification and high atom economy.
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Affiliation(s)
- T M A Barlow
- Research Group of Organic Chemistry, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium.
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6
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Korch KM, Eidamshaus C, Behenna DC, Nam S, Horne D, Stoltz BM. Enantioselective synthesis of α-secondary and α-tertiary piperazin-2-ones and piperazines by catalytic asymmetric allylic alkylation. Angew Chem Int Ed Engl 2015; 54:179-83. [PMID: 25382664 PMCID: PMC4285707 DOI: 10.1002/anie.201408609] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Indexed: 11/07/2022]
Abstract
The asymmetric palladium-catalyzed decarboxylative allylic alkylation of differentially N-protected piperazin-2-ones allows the synthesis of a variety of highly enantioenriched tertiary piperazine-2-ones. Deprotection and reduction affords the corresponding tertiary piperazines, which can be employed for the synthesis of medicinally important analogues. The introduction of these chiral tertiary piperazines resulted in imatinib analogues which exhibited comparable antiproliferative activity to that of their corresponding imatinib counterparts.
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Affiliation(s)
- Katerina M. Korch
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)
| | - Christian Eidamshaus
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)
| | - Douglas C. Behenna
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)
| | - Sangkil Nam
- Molecular Medicine, Beckman Research Institute, City of Hope Comprehensive Cancer Center 1500 East Duarte Road, Duarte, CA 91010 (USA)
| | - David Horne
- Molecular Medicine, Beckman Research Institute, City of Hope Comprehensive Cancer Center 1500 East Duarte Road, Duarte, CA 91010 (USA)
| | - Brian M. Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)
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7
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Perryman MS, Earl MWM, Greatorex S, Clarkson GJ, Fox DJ. Synthesis of 1- and 4-substituted piperazin-2-ones via Jocic-type reactions with N-substituted diamines. Org Biomol Chem 2015; 13:2360-5. [DOI: 10.1039/c4ob02311k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantiomerically-enriched trichloromethyl-containing alcohols are transformed regioselectively into enantiomerically-enriched 1-substituted piperazinones by modified Jocic reactions.
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Affiliation(s)
| | | | - Sam Greatorex
- Department of Chemistry
- University of Warwick
- Coventry
- U.K
| | | | - David J. Fox
- Department of Chemistry
- University of Warwick
- Coventry
- U.K
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8
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Korch KM, Eidamshaus C, Behenna DC, Nam S, Horne D, Stoltz BM. Enantioselective Synthesis of α‐Secondary and α‐Tertiary Piperazin‐2‐ones and Piperazines by Catalytic Asymmetric Allylic Alkylation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408609] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Katerina M. Korch
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101‐20, Pasadena, CA 91125 (USA)
| | - Christian Eidamshaus
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101‐20, Pasadena, CA 91125 (USA)
| | - Douglas C. Behenna
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101‐20, Pasadena, CA 91125 (USA)
| | - Sangkil Nam
- Molecular Medicine, Beckman Research Institute, City of Hope Comprehensive Cancer Center, 1500 East Duarte Road, Duarte, CA 91010 (USA)
| | - David Horne
- Molecular Medicine, Beckman Research Institute, City of Hope Comprehensive Cancer Center, 1500 East Duarte Road, Duarte, CA 91010 (USA)
| | - Brian M. Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101‐20, Pasadena, CA 91125 (USA)
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9
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Lao BB, Drew K, Guarracino DA, Brewer TF, Heindel DW, Bonneau R, Arora PS. Rational design of topographical helix mimics as potent inhibitors of protein-protein interactions. J Am Chem Soc 2014; 136:7877-88. [PMID: 24972345 PMCID: PMC4353027 DOI: 10.1021/ja502310r] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
![]()
Protein–protein
interactions encompass large surface areas, but
often a handful of key residues dominate the binding energy landscape.
Rationally designed small molecule scaffolds that reproduce the relative
positioning and disposition of important binding residues, termed
“hotspot residues”, have been shown to successfully
inhibit specific protein complexes. Although this strategy has led
to development of novel synthetic inhibitors of protein complexes,
often direct mimicry of natural amino acid residues does not lead
to potent inhibitors. Experimental screening of focused compound libraries
is used to further optimize inhibitors but the number of possible
designs that can be efficiently synthesized and experimentally tested
in academic settings is limited. We have applied the principles of
computational protein design to optimization of nonpeptidic helix
mimics as ligands for protein complexes. We describe the development
of computational tools to design helix mimetics from canonical and
noncanonical residue libraries and their application to two therapeutically
important protein–protein interactions: p53-MDM2 and p300-HIF1α.
The overall study provides a streamlined approach for discovering
potent peptidomimetic inhibitors of protein–protein interactions.
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Affiliation(s)
- Brooke Bullock Lao
- Department of Chemistry and ‡Departments of Biology and Computer Science, New York University , New York, New York 10003, United States
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10
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Valdivielso ÁM, Ventosa-Andrés P, Tato F, Fernández-Ibañez MÁ, Pappos I, Tsopanoglou NE, García-López MT, Gutiérrez-Rodríguez M, Herranz R. Highly functionalized 2-oxopiperazine-based peptidomimetics: An approach to PAR1 antagonists. Eur J Med Chem 2013; 70:199-224. [DOI: 10.1016/j.ejmech.2013.09.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 08/26/2013] [Accepted: 09/24/2013] [Indexed: 02/01/2023]
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11
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Mizuno A, Miura S, Watanabe M, Ito Y, Yamada S, Odagami T, Kogami Y, Arisawa M, Shuto S. Three-Dimensional Structural Diversity-Oriented Peptidomimetics Based on the Cyclopropylic Strain. Org Lett 2013; 15:1686-9. [DOI: 10.1021/ol400469w] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Akira Mizuno
- Faculty of Pharmaceutical Sciences, Center for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan, School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yata, Suruga-ku, Shizuoka 422-8526, Japan, PRISM BioLab Co., Ltd., 4259-3, Nagatsuta-cho, Midori-ku, Yokohama 226-8510, Japan, and D.D.P. Corporation, 1097-3, Kashiya, Kannami-cho, Shizuoka 419-0112, Japan
| | - Shiho Miura
- Faculty of Pharmaceutical Sciences, Center for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan, School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yata, Suruga-ku, Shizuoka 422-8526, Japan, PRISM BioLab Co., Ltd., 4259-3, Nagatsuta-cho, Midori-ku, Yokohama 226-8510, Japan, and D.D.P. Corporation, 1097-3, Kashiya, Kannami-cho, Shizuoka 419-0112, Japan
| | - Mizuki Watanabe
- Faculty of Pharmaceutical Sciences, Center for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan, School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yata, Suruga-ku, Shizuoka 422-8526, Japan, PRISM BioLab Co., Ltd., 4259-3, Nagatsuta-cho, Midori-ku, Yokohama 226-8510, Japan, and D.D.P. Corporation, 1097-3, Kashiya, Kannami-cho, Shizuoka 419-0112, Japan
| | - Yoshihiko Ito
- Faculty of Pharmaceutical Sciences, Center for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan, School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yata, Suruga-ku, Shizuoka 422-8526, Japan, PRISM BioLab Co., Ltd., 4259-3, Nagatsuta-cho, Midori-ku, Yokohama 226-8510, Japan, and D.D.P. Corporation, 1097-3, Kashiya, Kannami-cho, Shizuoka 419-0112, Japan
| | - Shizuo Yamada
- Faculty of Pharmaceutical Sciences, Center for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan, School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yata, Suruga-ku, Shizuoka 422-8526, Japan, PRISM BioLab Co., Ltd., 4259-3, Nagatsuta-cho, Midori-ku, Yokohama 226-8510, Japan, and D.D.P. Corporation, 1097-3, Kashiya, Kannami-cho, Shizuoka 419-0112, Japan
| | - Takenao Odagami
- Faculty of Pharmaceutical Sciences, Center for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan, School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yata, Suruga-ku, Shizuoka 422-8526, Japan, PRISM BioLab Co., Ltd., 4259-3, Nagatsuta-cho, Midori-ku, Yokohama 226-8510, Japan, and D.D.P. Corporation, 1097-3, Kashiya, Kannami-cho, Shizuoka 419-0112, Japan
| | - Yuji Kogami
- Faculty of Pharmaceutical Sciences, Center for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan, School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yata, Suruga-ku, Shizuoka 422-8526, Japan, PRISM BioLab Co., Ltd., 4259-3, Nagatsuta-cho, Midori-ku, Yokohama 226-8510, Japan, and D.D.P. Corporation, 1097-3, Kashiya, Kannami-cho, Shizuoka 419-0112, Japan
| | - Mitsuhiro Arisawa
- Faculty of Pharmaceutical Sciences, Center for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan, School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yata, Suruga-ku, Shizuoka 422-8526, Japan, PRISM BioLab Co., Ltd., 4259-3, Nagatsuta-cho, Midori-ku, Yokohama 226-8510, Japan, and D.D.P. Corporation, 1097-3, Kashiya, Kannami-cho, Shizuoka 419-0112, Japan
| | - Satoshi Shuto
- Faculty of Pharmaceutical Sciences, Center for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan, School of Pharmaceutical Sciences, University of Shizuoka, 52-1, Yata, Suruga-ku, Shizuoka 422-8526, Japan, PRISM BioLab Co., Ltd., 4259-3, Nagatsuta-cho, Midori-ku, Yokohama 226-8510, Japan, and D.D.P. Corporation, 1097-3, Kashiya, Kannami-cho, Shizuoka 419-0112, Japan
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12
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Ventosa-Andrés P, González-Vera JA, García-López MT, Herranz R. Solvent-Free Synthesis of α-Amino Nitrile-Derived Ureas. Org Lett 2013; 15:632-5. [DOI: 10.1021/ol303452r] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Rosario Herranz
- Instituto de Química Médica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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13
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An efficient entry to highly substituted chiral 2-oxopiperazines from α-amino acids via iodocyclization. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.109] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Valdivielso AM, Ventosa-Andrés P, García-López MT, Herranz R, Gutiérrez-Rodríguez M. Synthesis and Regioselective Functionalization of Piperazin-2-ones Based on Phe-Gly Pseudodipeptides. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201221] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Ventosa-Andrés P, Teresa García-López M, Herranz R. A study on the induction of stereoselectivity in the Strecker synthesis of basic amino acid-derived α-amino nitriles. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.07.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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16
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Affiliation(s)
- Petra Tošovská
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003
| | - Paramjit S. Arora
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003
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17
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De Risi C, Pelà M, Pollini GP, Trapella C, Zanirato V. Mastering chiral substituted 2-oxopiperazines. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.02.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Baeza JL, Gerona-Navarro G, Thompson K, Pérez de Vega MJ, Infantes L, García-López MT, González-Muñiz R, Martín-Martínez M. Further Evidence for 2-Alkyl-2-carboxyazetidines as γ-Turn Inducers. J Org Chem 2009; 74:8203-11. [DOI: 10.1021/jo901712x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José Luis Baeza
- Instituto de Química Médica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | | | - Kevin Thompson
- Instituto de Química Médica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | | | - Lourdes Infantes
- Instituto de Química Física Rocasolano (CSIC), Serrano 119, 28006 Madrid, Spain
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19
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Reginato G, Di Credico B, Andreotti D, Mingardi A, Paio A, Donati D. A new versatile and diastereoselective synthesis of polysubstituted 2-oxopiperazines from naturally occurring amino acids. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.10.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Kelleher F, Kelly S, McKee V. Spirobicyclic diamines. Part 3: Synthesis and metal complexation of proline-derived [4.4]-spirodiamines. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.06.050] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Abstract
Several functionalized diazabicyclo[4.3.0]nonenes and other heterocycles have been prepared as potential peptidomimetic scaffolds. A novel and efficient method has been developed for the preparation of N-substituted gamma-lactams 13. Preparation of amidine-containing 1,5-diazabicyclo[4.3.0]nonenes 43 and 44 has been achieved through Hg-mediated cyclization of the precursor N-aminopropyl-gamma-thiolactams and subsequent functional group manipulation. Bicycle 43 represents a novel scaffold for potential peptide turn mimetics, whereas 44 could potentially be employed as an alpha-helix template attached to the C-terminus of peptides. These compounds are novel additions to the current range of small-molecule constrained peptidomimetics.
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Affiliation(s)
- Craig A Hutton
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, VIC 3010, Australia.
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22
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Viso A, Fernández de la Pradilla R, Flores A, García A, Tortosa M, López-Rodríguez ML. Synthesis of highly substituted enantiopure piperazines and ketopiperazines from vicinal N-sulfinyl diamines. J Org Chem 2006; 71:1442-8. [PMID: 16468792 DOI: 10.1021/jo052077h] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Enantiopure 1-benzyl-2,3-disubstituted piperazines (4) have been synthesized by treatment of N-sulfinyl-N-benzyldiamino alcohols (1) with diethyl oxalate and sodium methoxide followed by reduction with borane. Alternatively, the sulfinamido group was preserved by an N-acylation/cyclization protocol using alpha-chloroacetyl chloride that led to the synthesis of N-sulfinyl ketopiperazines (11). Ensuing elimination of the sulfinyl group with NaH produced imino ketopiperazines (9) that are suitably functionalized for nucleophilic addition to the imino moiety. Stereoselective and high yielding allylation of imino ketopiperazines (9c) was achieved under Barbier conditions using CeCl3.7H2O as the additive.
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Affiliation(s)
- Alma Viso
- Instituto de Química Orgánica General, CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain.
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23
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Spirobicyclic diamines. Part 2: Synthesis of homochiral diastereoisomeric proline derived [4.4]-spirolactams. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.05.154] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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Kelleher F, Kelly S. Spirobicyclic diamines 1: synthesis of proline-derived spirolactams via thermal intramolecular ester aminolysis. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.03.021] [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]
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25
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Casiraghi G, Rassu G, Auzzas L, Burreddu P, Gaetani E, Battistini L, Zanardi F, Curti C, Nicastro G, Belvisi L, Motto I, Castorina M, Giannini G, Pisano C. Grafting aminocyclopentane carboxylic acids onto the RGD tripeptide sequence generates low nanomolar alphaVbeta3/alphaVbeta5 integrin dual binders. J Med Chem 2006; 48:7675-87. [PMID: 16302808 DOI: 10.1021/jm050698x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Eleven gamma-aminocyclopentane carboxylic acid (Acpca) platforms, including four dihydroxy representatives (19-22), three hydroxy analogues (34-36), and four deoxy derivatives (30-33), were prepared in a chiral nonracemic format. These simple units were then grafted onto an Arg-Gly-Asp (RGD) tripeptide framework by a mixed solid phase/solution protocol delivering an ensemble of 11 macrocyclic analogues of type cyclo-[-Arg-Gly-Asp-Acpca-], 1-11. The individual compounds were evaluated for their binding affinity toward the alphaVbeta3 and alphaVbeta5 integrin receptors. The analogue 10 exhibited a very interesting activity profile (IC50/alphaVbeta3= 1.5 nM; IC50/alphaVbeta5= 0.59 nM), comparable to that of reference compounds EMD121974 and ST1646. Closely related congeners 6, 8, and 9 also proved to be excellent dual binders with activity levels in the low nanomolar range. The three-dimensional (3D) NMR solution structures were determined, and docking studies to X-ray crystal structure of the extracellular segment of integrin alphaVbeta3 in complex with the reference compound EMD121974 were performed on selected analogues to elucidate the interplay between structure and function in these systems and to evidence the subtle bases for receptorial recognition. The results prove that the principle of isosteric dipeptide replacement for peptidomimetics design and synthesis can be violated, without detriment to the development of highly effective integrin binders.
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Affiliation(s)
- Giovanni Casiraghi
- Dipartimento Farmaceutico, Università di Parma, Parco Area delle Scienze 27A, I-43100 Parma, Italy.
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González-Vera JA, García-López MT, Herranz R. Molecular Diversity via Amino Acid Derived α-Amino Nitriles: Synthesis of Spirocyclic 2,6-Dioxopiperazine Derivatives. J Org Chem 2005; 70:3660-6. [PMID: 15845004 DOI: 10.1021/jo050146m] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Chiral spirocyclic 2,6-dioxopiperazines were synthesized from amino acid derived alpha-quaternary alpha-amino nitriles via H(2)SO(4)-promoted cyano hydration, followed by base-mediated cyclization and N-alkylation. This methodology, requiring the previous preparation of the amino nitrile by a modified Strecker reaction, was applied to Phe, Trp, Pro, Asp, Glu, and Ser derivatives. In the case of the Trp-derived amino nitrile the major product of the treatment with H(2)SO(4) was not the expected carboxamide, but a new tetracyclic indoline derivative containing the novel heterocyclic system hexahydropyrrolo[1',2',3':1,9a,9]imidazo[1,2-a]indole, as a result of a domino tautomerization. The treatment of this indoline derivative with refluxing 1 N HCl led to a Trp-derived 2,6-dioxopiperazine. The 2,6-dioxopiperazine ring opened under the reaction conditions of methyl ester saponification, giving N-(carboxyalkyl)amino acid derivatives. Therefore, the synthesis of 2,6-dioxopiperazines containing free carboxylic acids from the respective methyl esters required transesterification to benzyl esters, followed by hydrogenolysis.
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González-Vera JA, García-López MT, Herranz R. Unprecedented Stereospecific Synthesis of a Novel Tetracyclic Ring System, a Hybrid of Tetrahydropyrrolo[2,3-b]indole and Tetrahydroimidazo[1,2-a]indole, via a Domino Reaction upon a Tryptophan-Derived Amino Nitrile. Org Lett 2004; 6:2641-4. [PMID: 15281733 DOI: 10.1021/ol049222i] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Compounds containing a novel tetracyclic ring system, a hybrid of tetrahydropyrrolo[2,3-b]indole and tetrahydroimidazo[1,2-a]indole, are synthesized via an acid-mediated stereospecific domino tautomerization of a tryptophan-derived alpha-amino nitrile. Characterization of these new compounds and preliminary studies on the reactivity of the tetracyclic heterocyclic system are reported. [reaction: see text]
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Aschi M, Lucente G, Mazza F, Mollica A, Morera E, Nalli M, Paglialunga Paradisi M. Peptide backbone folding induced by the C(alpha)-tetrasubstituted cyclic alpha-amino acids 4-amino-1,2-dithiolane-4-carboxylic acid (Adt) and 1-aminocyclopentane-1-carboxylic acid (Ac5c). A joint computational and experimental study. Org Biomol Chem 2003; 1:1980-8. [PMID: 12945783 DOI: 10.1039/b212247b] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conformational study of a new group of synthetic peptides containing 4-amino-1,2-dithiolane-4-carboxylic acid (Adt), a cysteine-related achiral residue, has been carried out through a joint application of computational and experimental methodologies. Molecular Dynamics simulations clearly suggest the tendency of this molecule to adopt a gamma-turn conformation in vacuum and help in analyzing the complex and crucial conformational behaviour of the dithiolane ring which appears to preferentially adopt a C(S)-like structure. Electronic structure calculations carried out in solution using the Density Functional Theory also indicate the preservation of the gamma-like folding in apolar solvents and the helix-like one in more polar solvents. A comparison with the achiral 1-aminocycloalkane-1-carboxylic acid (Ac5c) has been carried out using the same computational tools. NMR and IR data on dipeptide derivatives containing the Adt or Ac5c residue show that in chloroform solution all the models prefer a gamma-turn structure, centered at the cyclic residue, stabilized by an intramolecular H-bond, whereas in a more polar solvent, i.e. dimethyl sulfoxide, this folding is not maintained. The experimental conformational studies, extended to N-Boc protected tripeptides, clearly indicate the remarkable tendency of both the five-membered C(alpha)-tetrasubstituted cyclic amino acids Adt and Ac5c to induce the gamma-turn structure also in models able to adopt the beta-bend conformation.
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Affiliation(s)
- Massimiliano Aschi
- Dipartimento di Chimica, Ingegneria Chimica e Materiali-Università di L'Aquila, 1-67100 Coppito, L'Aquila, Italy
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Herrero S, Garcı́a-López M, Cenarruzabeitia E, Rı́o JD, Herranz R. Versatile synthesis of chiral 2-substituted-5-oxo-1,2,3,4-tetrahydro-5H-1,4-benzodiazepines as novel scaffolds for peptidomimetic building. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00681-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Herrero S, García-López MT, Herranz R. Expedient one-pot synthesis of novel chiral 2-substituted 5-phenyl-1,4-benzodiazepine scaffolds from amino acid-derived amino nitriles. J Org Chem 2003; 68:4582-5. [PMID: 12762778 DOI: 10.1021/jo034286c] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient and stereocontrolled synthesis of phenylalanine- and tryptophan-derived 5-phenyl-1,4-benzodiazepines is described. This new methodology involves, as a key step, the synthesis of 5-phenyl-2,3-dihydro-1H-1,4-benzodiazepines by a one-pot cyano reduction and reductive cyclization of the appropriate amino nitrile, which were obtained via a modified Strecker reaction of N-protected alpha-amino aldehydes with 2-aminobenzophenone and trimethylsilyl cyanide. The subsequent reduction of these 2,3-dihydro-1H-1,4-benzodiazepines, followed by regioselective alkylation or acylation at position 4, led to 2,4-disubstituted-5-phenyl-2,3,4,5-tetrahydro-1H-1,4-benzodiazepine.
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Affiliation(s)
- Susana Herrero
- Instituto de Química Médica (CSIC), Juan de la Cierva 3, E-28006 Madrid, Spain
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