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Vitali Forconesi G, Basso A, Banfi L, Gugliotta D, Lambruschini C, Nola M, Riva R, Rocca V, Moni L. Total Synthesis of 4- epi-Bengamide E. Molecules 2024; 29:1715. [PMID: 38675534 PMCID: PMC11052282 DOI: 10.3390/molecules29081715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
Bengamide E is a bioactive natural product that was isolated from Jaspidae sponges by Crews and co-workers in 1989. It displays a wide range of biological activities, including antitumor, antibiotic, and anthelmintic properties. With the aim of investigating the structural feature essential for their activity, several total syntheses of Bengamide E and its analogues have been reported in the literature. Nevertheless, no synthesis of the stereoisomer with modification of its configuration at C-4 carbon has been reported so far. Here, we report the first total synthesis of the 4-epi-Bengamide E. Key reactions in the synthesis include a chemoenzimatic desymmetrization of biobased starting materials and a diastereoselective Passerini reaction using a chiral, enantiomerically pure aldehyde, and a lysine-derived novel isocyanide.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Lisa Moni
- Department of Chemistry and Industrial Chemistry, University of Genova, Via Dodecaneso, 31, 16146 Genova, Italy; (G.V.F.); (A.B.); (L.B.); (D.G.); (C.L.); (M.N.); (R.R.); (V.R.)
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2
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The Development of the Bengamides as New Antibiotics against Drug-Resistant Bacteria. Mar Drugs 2022; 20:md20060373. [PMID: 35736176 PMCID: PMC9228497 DOI: 10.3390/md20060373] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 02/04/2023] Open
Abstract
The bengamides comprise an interesting family of natural products isolated from sponges belonging to the prolific Jaspidae family. Their outstanding antitumor properties, coupled with their unique mechanism of action and unprecedented molecular structures, have prompted an intense research activity directed towards their total syntheses, analogue design, and biological evaluations for their development as new anticancer agents. Together with these biological studies in cancer research, in recent years, the bengamides have been identified as potential antibiotics by their impressive biological activities against various drug-resistant bacteria such as Mycobacterium tuberculosis and Staphylococcus aureus. This review reports on the new advances in the chemistry and biology of the bengamides during the last years, paying special attention to their development as promising new antibiotics. Thus, the evolution of the bengamides from their initial exploration as antitumor agents up to their current status as antibiotics is described in detail, highlighting the manifold value of these marine natural products as valid hits in medicinal chemistry.
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Taher ES, Banwell MG, Buckler JN, Yan Q, Lan P. The Exploitation of Enzymatically-Derivedcis-1,2-Dihydrocatechols and Related Compounds in the Synthesis of Biologically Active Natural Products. CHEM REC 2017; 18:239-264. [DOI: 10.1002/tcr.201700064] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Ehab S. Taher
- Research School of Chemistry; Institute of Advanced Studies; The Australian National University; Canberra ACT 2601 Australia
| | - Martin G. Banwell
- Research School of Chemistry; Institute of Advanced Studies; The Australian National University; Canberra ACT 2601 Australia
| | - Joshua N. Buckler
- Research School of Chemistry; Institute of Advanced Studies; The Australian National University; Canberra ACT 2601 Australia
| | - Qiao Yan
- Research School of Chemistry; Institute of Advanced Studies; The Australian National University; Canberra ACT 2601 Australia
| | - Ping Lan
- Department of Food Science and Engineering; College of Science and Engineering; Jinan University; Guangzhou 510632 People's Republic of China
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White KN, Tenney K, Crews P. The Bengamides: A Mini-Review of Natural Sources, Analogues, Biological Properties, Biosynthetic Origins, and Future Prospects. JOURNAL OF NATURAL PRODUCTS 2017; 80:740-755. [PMID: 28185457 PMCID: PMC5368688 DOI: 10.1021/acs.jnatprod.6b00970] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
This review focuses entirely on the natural bengamides and selected synthetic analogues that have inspired decades of research. Bengamide A was first reported in 1986 from the sponge Jaspis cf. coriacea, and bengamide-containing sponges have been gathered from many biogeographic sites. In 2005, a terrestrial Gram-negative bacterium, Myxococcus virescens, was added as a source for bengamides. Biological activity data using varying bengamide-based scaffolds has enabled fine-tuning of structure-activity relationships. Molecular target finding contributed to the creation of a synthetic "lead" compound, LAF389, that was the subject of a phase I anticancer clinical trial. Despite clinical trial termination, the bengamide compound class is still attracting worldwide attention. Future breakthroughs based on the bengamide scaffold are possible and could build on their nanomolar in vitro and positive in vivo antiproliferative and antiangiogenic properties. Bengamide molecular targets include methionine aminopeptidases (MetAP1 and MetAP2) and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB). A mixed PKS/NRPS biosynthetic gene cluster appears to be responsible for creation of the bengamides. This review highlights that the bengamides have driven inspirational studies and that they will remain relevant for future research, even 30 years after the discovery of the first structures.
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Affiliation(s)
- Kimberly N. White
- Physical
and Environmental Sciences Department, Colorado
Mesa University, Grand Junction, Colorado 81501, United States
- Tel (K. N. White): (970)
248-1529. Fax: (970) 248-1700. E-mail:
| | - Karen Tenney
- Department
of Chemistry and Biochemistry, University
of California, Santa Cruz, California 95064, United States
| | - Phillip Crews
- Department
of Chemistry and Biochemistry, University
of California, Santa Cruz, California 95064, United States
- Tel (P. Crews): (831) 459-2603. Fax: (831) 459-2935. E-mail:
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5
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Phi TD, Doan Thi Mai H, Tran VH, Truong BN, Tran TA, Vu VL, Chau VM, Pham VC. Design, synthesis and cytotoxicity of bengamide analogues and their epimers. MEDCHEMCOMM 2017; 8:445-451. [PMID: 30108762 DOI: 10.1039/c6md00587j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 12/18/2016] [Indexed: 11/21/2022]
Abstract
Starting from d-glycero-d-gulo-heptonic acid γ-lactone and amino acids, a number of diastereoisomeric bengamide analogues were synthesized. Optimization of the reaction conditions revealed that microwave irradiation assistance is a powerful method for the preparation of aminolactams, as well as for the coupling reactions of the lactone 5 with aminolactams. Cytotoxic activity evaluation against six cancer cell lines (KB, HepG2, LU1, MCF7, HL60, and Hela) demonstrated that the configuration of C-2' seems to be critical for the cytotoxic activity of compounds 8b (2'R) and 8a (2'S). Additionally, comparison of cytotoxicity of the protected acetonide compounds with that of their corresponding deprotected bengamide analogues suggested that the flexibility of the ketide side chain should be required for their cytotoxic activity.
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Affiliation(s)
- Thi Dao Phi
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049.,Graduate University of Science and Technology , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam
| | - Huong Doan Thi Mai
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
| | - Van Hieu Tran
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
| | - Bich Ngan Truong
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
| | - Tuan Anh Tran
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049.,University of Science and Technology of Hanoi , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam
| | - Van Loi Vu
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
| | - Van Minh Chau
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
| | - Van Cuong Pham
- Advanced Center for Bioorganic Chemistry , Institute of Marine Biochemistry , VAST , 18 Hoang Quoc Viet , Caugiay , Hanoi , Vietnam . ; ; Tel: +84437917049
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Taher ES, Guest P, Benton A, Ma X, Banwell MG, Willis AC, Seiser T, Newton TW, Hutzler J. The Synthesis of Certain Phomentrioloxin A Analogues and Their Evaluation as Herbicidal Agents. J Org Chem 2016; 82:211-233. [DOI: 10.1021/acs.joc.6b02372] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Ehab S. Taher
- Research
School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Prue Guest
- Research
School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Amanda Benton
- Research
School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Xinghua Ma
- Research
School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Martin G. Banwell
- Research
School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Anthony C. Willis
- Research
School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Tobias Seiser
- BASF SE, Carl-Boschstrasse
38, Ludwigshafen 67056, Germany
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Philip AT, Raju E, Ramapanicker R. Stereoselective Synthesis of Hydroxy Diamino Acid Derivatives and the Caprolactam Unit of Bengamide A through Organocatalytic α-Hydroxylation and Reductive Amination of Aldehydes. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600842] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Anijamol T. Philip
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur Uttar Pradesh India
| | - Eerlapally Raju
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur Uttar Pradesh India
| | - Ramesh Ramapanicker
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur Uttar Pradesh India
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8
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Abstract
The first total syntheses of newly isolated polyazole natural products azolemycins A–D, along with the synthesis of the tetra-oxazole non-natural analogue, are described.
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Affiliation(s)
| | - David J. Fox
- Department of Chemistry
- University of Warwick
- Coventry
- UK
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9
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Chemistry and biology of bengamides and bengazoles, bioactive natural products from Jaspis sponges. Mar Drugs 2014; 12:1580-622. [PMID: 24646945 PMCID: PMC3967228 DOI: 10.3390/md12031580] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 01/24/2014] [Accepted: 02/25/2014] [Indexed: 12/13/2022] Open
Abstract
Sponges corresponding to the Jaspidae family have proved to be a prolific source of bioactive natural products. Among these, the bengamides and the bengazoles stand out by virtue of their unprecedented molecular architectures and impressive biological profiles, including antitumor, antibiotic and anthelmintic properties. As a consequence, intense research activity has been devoted to these compounds from both chemical and biological standpoints. This review describes in detail the research into these classes of natural products and the benefits they offer in chemistry and biology.
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Meltzer-Mats E, Babai-Shani G, Pasternak L, Uritsky N, Getter T, Viskind O, Eckel J, Cerasi E, Senderowitz H, Sasson S, Gruzman A. Synthesis and mechanism of hypoglycemic activity of benzothiazole derivatives. J Med Chem 2013; 56:5335-50. [PMID: 23750537 DOI: 10.1021/jm4001488] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Adenosine 5'-monophosphate activated protein kinase (AMPK) has emerged as a major potential target for novel antidiabetic drugs. We studied the structure of 2-chloro-5-((Z)-((E)-5-((5-(4,5-dimethyl-2-nitrophenyl)furan-2-yl)methylene)-4-oxothiazolidin-2-ylidene)amino)benzoic acid (PT-1), which attenuates the autoinhibition of the enzyme AMPK, for the design and synthesis of different benzothiazoles with potential antidiabetic activity. We synthesized several structurally related benzothiazole derivatives that increased the rate of glucose uptake in L6 myotubes in an AMPK-dependent manner. One compound, 2-(benzo[d]thiazol-2-ylmethylthio)-6-ethoxybenzo[d]thiazole (34), augmented the rate of glucose uptake up to 2.5-fold compared with vehicle-treated cells and up to 1.1-fold compared to PT-1. Concomitantly, it elevated the abundance of GLUT4 in the plasma membrane of the myotubes and activated AMPK. Subcutaneous administration of 34 to hyperglycemic Kuo Kondo rats carrying the Ay-yellow obese gene (KKAy) mice lowered blood glucose levels toward the normoglycemic range. In accord with its activity, compound 34 showed a high fit value to a pharmacophore model derived from the PT-1.
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Affiliation(s)
- Ella Meltzer-Mats
- Division of Medicinal Chemistry, Department of Chemistry, Faculty of Exact Sciences, Bar Ilan University , Ramat Gan, 5290002, Israel
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11
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Sarabia F, Martín-Gálvez F, García-Ruiz C, Sánchez-Ruiz A, Vivar-García C. Epi-, Epoxy-, and C2-Modified Bengamides: Synthesis and Biological Evaluation. J Org Chem 2013; 78:5239-53. [DOI: 10.1021/jo4003272] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Francisco Sarabia
- Department of Organic Chemistry,
Faculty of Sciences, University of Málaga, Campus de Teatinos s/n
29071-Málaga, Spain
| | - Francisca Martín-Gálvez
- Department of Organic Chemistry,
Faculty of Sciences, University of Málaga, Campus de Teatinos s/n
29071-Málaga, Spain
| | - Cristina García-Ruiz
- Department of Organic Chemistry,
Faculty of Sciences, University of Málaga, Campus de Teatinos s/n
29071-Málaga, Spain
| | - Antonio Sánchez-Ruiz
- Department of Organic Chemistry,
Faculty of Sciences, University of Málaga, Campus de Teatinos s/n
29071-Málaga, Spain
| | - Carlos Vivar-García
- Department of Organic Chemistry,
Faculty of Sciences, University of Málaga, Campus de Teatinos s/n
29071-Málaga, Spain
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12
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Martín-Gálvez F, García-Ruiz C, Sánchez-Ruiz A, Valeriote FA, Sarabia F. An array of bengamide E analogues modified at the terminal olefinic position: synthesis and antitumor properties. ChemMedChem 2013; 8:819-31. [PMID: 23512621 DOI: 10.1002/cmdc.201300033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Indexed: 12/12/2022]
Abstract
Based on our previously described synthetic strategy for bengamide E, a natural product of marine origin with antitumor activity, a small library of analogues modified at the terminal olefinic position was generated with the objective of investigating the effect of structural modifications on antitumor properties. Biological evaluation of these analogues, consisting of IC50 determinations against various tumor cell lines, revealed important aspects with respect to the structural requirements of this olefinic position for activity. Interestingly, the analogue possessing a cyclopentyl group displayed greater potency than the parent bengamide E, representing a key finding upon which to base further investigations into the design of new analogues with promising biological activities.
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Affiliation(s)
- Francisca Martín-Gálvez
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, Campus de Teatinos s/n. 29071 Málaga, Spain
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Sarabia F, Martín-Gálvez F, Chammaa S, Martín-Ortiz L, Sánchez-Ruiz A. Chiral Sulfur Ylides for the Synthesis of Bengamide E and Analogues. J Org Chem 2010; 75:5526-32. [DOI: 10.1021/jo100696w] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Francisco Sarabia
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, Campus de Teatinos s/n 29071, Malaga, Spain
| | - Francisca Martín-Gálvez
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, Campus de Teatinos s/n 29071, Malaga, Spain
| | - Samy Chammaa
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, Campus de Teatinos s/n 29071, Malaga, Spain
| | - Laura Martín-Ortiz
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, Campus de Teatinos s/n 29071, Malaga, Spain
| | - Antonio Sánchez-Ruiz
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, Campus de Teatinos s/n 29071, Malaga, Spain
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15
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Synthesis of bromo-conduritol-B and bromo-conduritol-C as glycosidase inhibitors. Carbohydr Res 2009; 344:426-31. [DOI: 10.1016/j.carres.2008.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2008] [Revised: 11/05/2008] [Accepted: 12/02/2008] [Indexed: 11/23/2022]
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16
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Liu G, Ma YM, Tai WY, Xie CM, Li YL, Li J, Nan FJ. Design, synthesis, and biological evaluation of caprolactam-modified bengamide analogues. ChemMedChem 2008; 3:74-8. [PMID: 17994598 DOI: 10.1002/cmdc.200700214] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gang Liu
- Chinese National Center for Drug Screening, Shanghai Institute of Materia Medica, 189 Guo Shou Jing Road, Shanghai 201203, China
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Jaworski AA, Burch JD. Diastereoselective synthesis of the polyol-containing side chain of the ent-bengamides. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.10.083] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Goubert M, Toupet L, Sinibaldi ME, Canet I. Synthetic studies towards 4,10-diaza-1,7-dioxaspiro[5.5]undecanes: access to 3-aza-6,8-dioxabicyclo[3.2.1]octan-2-one and 2H-1,4-oxazin-3(4H)-one frameworks. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.05.109] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
The range of available arene dihydroxylating dioxygenase enzymes, their structure and mechanism, and recent examples of the application of arene cis-dihydrodiol bioproducts as chiral precursors in the synthesis of natural and unnatural products and chiral ligands are discussed.
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Affiliation(s)
- Derek R Boyd
- School of Chemistry and Centre for Theory and Application of Catalysis, Queen's University of Belfast, Belfast, UKBT9 5AG
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Sarabia F, Sánchez-Ruiz A. Total Synthesis of Bengamide E and Analogues by Modification at C-2 and at Terminal Olefinic Positions. J Org Chem 2005; 70:9514-20. [PMID: 16268627 DOI: 10.1021/jo0516032] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[Reaction: see text]. The total synthesis of the natural product Bengamide E, one of the members of a new class of antitumor natural products of marine origin, is reported based on a convergent and flexible synthetic route featuring an oxirane ring-opening reaction and an olefin cross metathesis. In a similar way, analogues structurally modified at C-2 and at the terminal vinyl positions were prepared by introduction of various nucleophiles and alkyl substituents during the epoxide opening and the olefin cross metathesis steps, respectively. These studies demonstrate the validity of our synthetic strategy, although they reveal some problems associated with the olefin cross metathesis, whose efficiency depends on the substituent at the C-2 position as well as the steric environment of the alkene.
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Affiliation(s)
- Francisco Sarabia
- Department of Biochemistry, Molecular Biology and Organic Chemistry, Faculty of Sciences, University of Malaga, 29071 Malaga, Spain.
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Fonseca G, Seoane GA. Chemoenzymatic synthesis of enantiopure α-substituted cyclohexanones from aromatic compounds. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.02.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Renner J, Kruszelnicki I, Adamiak B, Willis AC, Hammond E, Su S, Burns C, Trybala E, Ferro V, Banwell MG. The Synthesis and Biological Evaluation of Two Analogues of the C-Riboside Showdomycin. Aust J Chem 2005. [DOI: 10.1071/ch04273] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Two novel analogues, 2 and 3, of the C-riboside showdomycin (1) have been prepared by exploiting the N-TIPS-substituted pyrrole 7 as a synthetic equivalent for the maleimide C3 anion. The tetraacetate precursor, 12, of target 2 as well as target 3 itself were subjected to single-crystal X-ray analyses. Analogues 2 and 3 as well as showdomycin and its anomer (4) have each been evaluated in various assays for their cytotoxic, anti-bacterial, and anti-viral effects.
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Misawa N, Nakamura R, Kagiyama Y, Ikenaga H, Furukawa K, Shindo K. Synthesis of vicinal diols from various arenes with a heterocyclic, amino or carboxyl group by using recombinant Escherichia coli cells expressing evolved biphenyl dioxygenase and dihydrodiol dehydrogenase genes. Tetrahedron 2005. [DOI: 10.1016/j.tet.2004.10.052] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Misawa N, Shindo K, Takahashi H, Suenaga H, Iguchi K, Okazaki H, Harayama S, Furukawa K. Hydroxylation of various molecules including heterocyclic aromatics using recombinant Escherichia coli cells expressing modified biphenyl dioxygenase genes. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)01253-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Boeckman RK, Clark TJ, Shook BC. A practical enantioselective total synthesis of the bengamides B, E, and Z. Org Lett 2002; 4:2109-12. [PMID: 12049530 DOI: 10.1021/ol026101e] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] A practical total synthesis of Bengamides B, E, and Z from a common polyol intermediate is described. Consecutive aldol condensations afford a protected polyol thioester side chain suitable for coupling to the Bengamides. A novel chiral phase transfer catalyzed enantioselective alkylation affords the more highly functionalized amino caprolactams required for Bengamides B and Z. Use of the 2-naphthylmethyl ether protecting group, compatible with the boron Lewis acids required for enantioselective aldol condensation, allows direct access to Bengamide B.
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Affiliation(s)
- Robert K Boeckman
- Department of Chemistry, University of Rochester, Rochester, New York 14627-0216, USA.
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Endoma MA, Bui VP, Hansen J, Hudlicky T. Medium-Scale Preparation of Useful Metabolites of Aromatic Compounds via Whole-Cell Fermentation with Recombinant Organisms. Org Process Res Dev 2002. [DOI: 10.1021/op020013s] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mary Ann Endoma
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, U.S.A
| | - Vu P. Bui
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, U.S.A
| | - Jeff Hansen
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, U.S.A
| | - Tomas Hudlicky
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, U.S.A
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