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Xi YK, Zhang H, Li RX, Kang SY, Li J, Li Y. Total Synthesis of Spirotryprostatins through Organomediated Intramolecular Umpolung Cyclization. Chemistry 2019; 25:3005-3009. [DOI: 10.1002/chem.201806411] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Yong-Kai Xi
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Rui-Xi Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Shi-Yuan Kang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Jin Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Yan Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
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2
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Ručilová V, Králová P, Soural M. Synthesis of Disubstituted Pyrazino-Oxazine Derivatives with Controlled Stereochemistry. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701448] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Veronika Ručilová
- Institute of Molecular and Translational Medicine; Faculty of Medicine and Dentistry; Palacký University; Hněvotínská 5 77900 Olomouc Czech Republic
| | - Petra Králová
- Institute of Molecular and Translational Medicine; Faculty of Medicine and Dentistry; Palacký University; Hněvotínská 5 77900 Olomouc Czech Republic
| | - Miroslav Soural
- Department of Organic Chemistry; Faculty of Science; Palacký University; 77146 Olomouc Czech Republic
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El-Gendy BEDM, Rateb ME. Antibacterial activity of diketopiperazines isolated from a marine fungus using t-butoxycarbonyl group as a simple tool for purification. Bioorg Med Chem Lett 2015; 25:3125-8. [PMID: 26099531 DOI: 10.1016/j.bmcl.2015.06.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 05/30/2015] [Accepted: 06/01/2015] [Indexed: 11/21/2022]
Abstract
Nine diketopiperazines were characterized from the culture of marine fungal isolate MR2012 which based on DNA amplification and sequencing of the fungal internal transcribed spacer (ITS) region was identified as Aspergillus fumigatus. The isolated fungal metabolites 4-12 were unambiguously identified as a series of simple and re-arranged diketopiperazines by analysis of spectroscopic data. t-Butoxycarbonyl group (BOC) derivatization was used to separate the intractable mixture of 4 and 5. When all compounds were evaluated for antimicrobial activity against gram positive bacteria, the isolated metabolites showed moderate to weak effects, while the semisynthetic derivatives 4a and 5a displayed strong activity comparable to the positive control, tetracycline against gram positive bacteria.
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Affiliation(s)
| | - Mostafa E Rateb
- Pharmacognosy Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt; Marine Biodiscovery Centre, University of Aberdeen, AB24 3UE, UK.
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4
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Pereira PC, Arends IW, Sheldon RA. A green and expedient synthesis of enantiopure diketopiperazines via enzymatic resolution of unnatural amino acids. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.06.105] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Liu S, Mu Y, Han J, Zhen X, Yang Y, Tian X, Whiting A. Stereoselective synthesis and rearrangement-fragmentation of arylidene N-alkoxydiketopiperazines. Org Biomol Chem 2011; 9:7476-81. [PMID: 21918789 DOI: 10.1039/c1ob05722g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A stereoselective synthesis of arylidene N-alkoxydiketopiperazines via oxime-ether formation and intramolecular acylation is described, followed by an acid-catalysed rearrangement-fragmentation to give novel diketopiperazine hemiaminal derivatives with useful bioactivity against certain tumour cell lines.
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Affiliation(s)
- Shouxin Liu
- State Key Laboratory Breeding Base-Hebei Province Key Laboratory of Molecular Chemistry for Drug, Hebei University of Science & Technology, Shijiazhuang 050018, People's Republic of China.
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6
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Durini M, Sahr FA, Kuhn M, Civera M, Gennari C, Piarulli U. Bifunctional 2,5-Diketopiperazines as Efficient Organocatalysts for the Enantioselective Conjugate Addition of Aldehydes to Nitroolefins. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100794] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ressurreição ASM, Delatouche R, Gennari C, Piarulli U. Bifunctional 2,5‐Diketopiperazines as Rigid Three‐Dimensional Scaffolds in Receptors and Peptidomimetics. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001330] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ana Sofia M. Ressurreição
- Università degli Studi dell'Insubria, Dipartimento di Scienze Chimiche e Ambientali, via Valleggio 11, 22100 Como, Italy, Fax: +39‐031‐2386449
- Universidade de Lisboa, iMed. UL, Faculdade de Farmácia, Av. Prof. Gama Pinto, 649‐003 Lisboa, Portugal
| | - Régis Delatouche
- Università degli Studi dell'Insubria, Dipartimento di Scienze Chimiche e Ambientali, via Valleggio 11, 22100 Como, Italy, Fax: +39‐031‐2386449
| | - Cesare Gennari
- Università degli Studi di Milano, Dipartimento di ChimicaOrganica e Industriale, via G. Venezian 21, 20133 Milano, Italy
| | - Umberto Piarulli
- Università degli Studi dell'Insubria, Dipartimento di Scienze Chimiche e Ambientali, via Valleggio 11, 22100 Como, Italy, Fax: +39‐031‐2386449
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8
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Stereoselective ring contraction of 2,5-diketopiperazines: An innovative approach to the synthesis of promising bioactive 5-membered scaffolds. Bioorg Chem 2010; 38:210-7. [DOI: 10.1016/j.bioorg.2010.05.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2010] [Revised: 05/17/2010] [Accepted: 05/19/2010] [Indexed: 02/03/2023]
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9
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O'Neill J, Blackwell HE. Solid-phase and microwave-assisted syntheses of 2,5-diketopiperazines: small molecules with great potential. Comb Chem High Throughput Screen 2007; 10:857-76. [PMID: 18288948 PMCID: PMC2585775 DOI: 10.2174/138620707783220365] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Diketopiperazines (DKPs) are a well-known class of heterocycles that have recently emerged as a promising biologically active scaffold. Solid-phase organic synthesis has become an important tool in the combinatorial exploration of these privileged structures, expediting the synthesis and, therefore, the discovery of active compounds. To date, certain DKPs have shown potent activities against a range of diseases and biological phenomena, including bacterial infections, various cancers, asthma, infertility, premature labor, and HIV. Recent applications of solid-phase DKP synthesis, with a particular focus on cyclative cleavage and microwave-assisted reactions, are highlighted herein.
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Affiliation(s)
- J.C. O'Neill
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA
| | - H. E. Blackwell
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA
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11
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Cain JP, Mayorov AV, Cai M, Wang H, Tan B, Chandler K, Lee Y, Petrov RR, Trivedi D, Hruby VJ. Design, synthesis, and biological evaluation of a new class of small molecule peptide mimetics targeting the melanocortin receptors. Bioorg Med Chem Lett 2006; 16:5462-7. [PMID: 16931008 PMCID: PMC1810397 DOI: 10.1016/j.bmcl.2006.07.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2006] [Revised: 06/23/2006] [Accepted: 07/05/2006] [Indexed: 10/24/2022]
Abstract
A new bicyclic template has been developed for the synthesis of peptide mimetics. Straightforward synthetic steps, starting from amino acids, allow the facile construction of a wide range of analogs. This system was designed to target the melanocortin receptors (MCRs), with functional group selection based on a known pharmacophore and guidance from molecular modeling to rationally identify positional and stereochemical isomers likely to be active. The functions of hMCRs are critical to myriad biological activities, including pigmentation, steroidogenesis, energy homeostasis, erectile activity, and inflammation. These G-protein-coupled receptors (GPCRs) are targets for drug discovery in a number of areas, including cancer, pain, and obesity therapeutics. All compounds from this series tested to date are antagonists which bind with high affinity. Importantly, many are highly selective for a particular MCR subtype, including some of the first completely hMC5R-selective antagonists reported.
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Affiliation(s)
- James P Cain
- Department of Chemistry, University of Arizona, Tucson, AZ 85721, USA
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12
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Martínez-Palou R. Advances in Microwave-Assisted Combinatorial Chemistry Without Polymer-Supported Reagents. Mol Divers 2006; 10:435-62. [PMID: 16896542 DOI: 10.1007/s11030-006-9021-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2005] [Accepted: 01/19/2006] [Indexed: 11/28/2022]
Abstract
Combinatorial methodologies have dramatically changed the chemical research and discovery process, offering an unlimited source of new molecule entities to be screened for activity. The application of microwave irradiation in Combinatorial Chemistry and high-throughput synthesis has become increasingly popular. By taking advantage of this energy source, compound libraries for lead generation can be assembled in a fraction of time required by conventional thermal heating. This review focuses on the advances in developing synthetic methodologies in microwave without polymer-supported reagents suitable for combinatorial chemistry, including the advances in microwave-assisted fluorous synthesis technology.
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Affiliation(s)
- Rafael Martínez-Palou
- Programa de Ingeniería Molecular, Instituto Mexicano del Petróleo, México, DF, México.
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13
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Couladouros EA, Magos AD. Solid-phase total synthesis of (-)-Phenylhistine and (-)-Aurantiamine. Synthesis of a diverse dehydro-2,5-diketopiperazine library. Part II. Mol Divers 2005; 9:111-21. [PMID: 15789558 DOI: 10.1007/s11030-005-1295-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The preparation of solid supported glycine phosphonate and its utilization for the total synthesis of two natural products is presented. The proposed protocol combines diversity with accessibility and speed, which makes this scaffold suitable for automated parallel synthesis and combinatorial chemistry. The preparation of a small library of dehydro-2,5-diketopiperazines, combining several natural amino acids with diverse heterocycles (including thiazoles, pyridines, indoles and imidazoles), is also demonstrated.
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Affiliation(s)
- Elias A Couladouros
- Chemistry Laboratories, Agricultural University of Athens, Iera Odos 75, Athens 118 55, Greece.
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14
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Chern MS, Li WR. Solid-phase synthesis of isoquinolinones using Bischler–Napieralski cyclization. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.09.059] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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Chern MS, Shih YK, Dewang PM, Li WR. Traceless Solid-Phase Synthesis of Carbolinones. ACTA ACUST UNITED AC 2004; 6:855-8. [PMID: 15530109 DOI: 10.1021/cc049876i] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Meei-Shiou Chern
- Department of Chemistry, National Central University, Chung-Li, 32054, Taiwan
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16
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Wang CC, Li WR. Traceless Solid-Phase Synthesis of Substituted Benzimidazolones. ACTA ACUST UNITED AC 2004; 6:899-902. [PMID: 15530116 DOI: 10.1021/cc049926j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Chih-Chung Wang
- Department of Chemistry, National Central University, Chung-Li, 32054, Taiwan
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Abstract
Diketopiperazines (DKPs), the smallest cyclic peptides, represent an important class of biologically active natural products and their research has been fundamental to many aspects of peptide chemistry. The advent of combinatorial chemistry has revived interest in DKPs for two reasons: firstly, they are simple heterocyclic scaffolds in which diversity can be introduced and stereochemically controlled at up to four positions; secondly, they can be prepared from readily available alpha-amino acids using very robust chemistry. Here synthetic methods, conformation, as well as applications of DKPs are summarized and discussed critically.
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