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Purohit S, Rana R, Tyagi A, Bahuguna A, Oswal P, Anshika, Kumar A. Organosulphur and organoselenium compounds as ligands for catalytic systems in the Sonogashira coupling. Org Biomol Chem 2024; 22:6215-6245. [PMID: 38873754 DOI: 10.1039/d4ob00552j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Sonogashira coupling is a reaction of aryl/vinyl halides with terminal alkynes. It is used for the synthesis of conjugated enynes. Generally, copper (Cu) is required as a mediator for this reaction. It requires a long reaction time, high catalyst loading, or expensive ligands. Recently, homogeneous, heterogeneous, and nanocatalysts have been developed using organosulphur and organoselenium compounds as building blocks. Preformed complexes of metals with organosulphur and organoselenium ligands are used for homogeneous catalysis. Heterogeneous catalytic systems have also been developed using Cu, Pd, and Ni as metals. The nanocatalytic systems (synthesized using such ligands) include copper selenides and stabilized palladium(0) nanospecies. This article aims to cover the developments in the field of the processes and techniques used so far to generate catalytically relevant organic ligands having sulphur or selenium donor sites, the utility of such ligands in the syntheses of homogeneous, heterogeneous, and nanocatalytic systems, and critical analysis of their application in the catalysis of this coupling reaction. The results of catalysis are analyzed in terms of the effects of the S/Se donor, halogen atom of aryl halide, the effect of the presence/absence of electron-withdrawing or electron-donating groups or substituents on the aromatic ring of haloarenes/substituted phenylacetylenes, as well as the position (ortho or para) of the substitution. Substrate scope is discussed for all the kinds of catalysis. The supremacy of heterogeneous and nanocatalytic systems indicates promising future prospects.
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Affiliation(s)
- Suraj Purohit
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248001, India.
| | - Ramakshi Rana
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248001, India.
| | - Anupma Tyagi
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248001, India.
| | - Anurag Bahuguna
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248001, India.
| | - Preeti Oswal
- Department of Chemistry, Texas A&M University, College Station, 77842-3012, USA
| | - Anshika
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248001, India.
| | - Arun Kumar
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248001, India.
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2
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Su S, Zhang Y, Liu P, Wink DJ, Lee D. Intramolecular Carboxyamidation of Alkyne-Tethered O-Acylhydroxamates through Formation of Fe(III)-Nitrenoids. Chemistry 2024; 30:e202303428. [PMID: 38050744 DOI: 10.1002/chem.202303428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/28/2023] [Accepted: 12/04/2023] [Indexed: 12/06/2023]
Abstract
We developed intramolecular carboxyamidations of alkyne-tethered O-acylhydroxamates followed by either thermally induced spontaneous or 4-(dimethylamino)pyridine-catalyzed O→O or O→N acyl group migration. Under iron-catalyzed conditions, the carboxyamidation products were generated in high yield from both Z-alkene and arene-tethered substrates. DFT calculations indicate that the iron-catalyzed carboxyamidation proceeds via a stepwise mechanism involving iron-imidyl radical cyclization followed by intramolecular acyloxy transfer from the iron center to the alkenyl radical center to furnish the cis-carboxyamidation product. Upon treatment with 4-(dimethylamino)pyridine, the Z-alkene-tethered carboxyamidation products underwent selective O→O acyl migration to generate 2-acyloxy-5-acyl pyrroles. Thermal O→N acyl migration occurs during carboxyamidation if the Z-alkene linker contains an alkyl or an aryl substituent at the β-position of the carbonyl group. On the other hand, the arene linker-containing compounds selectively undergo O→N acyl migration to generate N-acyl-3-acylisoindolinones, and the corresponding O→O acyl migration forming isoindole derivatives was not observed.
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Affiliation(s)
- Siyuan Su
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
| | - Yu Zhang
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, PA, 15260, USA
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, PA, 15260, USA
| | - Donald J Wink
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
| | - Daesung Lee
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
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Mushtaq A, Zahoor AF. Mukaiyama aldol reaction: an effective asymmetric approach to access chiral natural products and their derivatives/analogues. RSC Adv 2023; 13:32975-33027. [PMID: 38025859 PMCID: PMC10631541 DOI: 10.1039/d3ra05058k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/21/2023] [Indexed: 12/01/2023] Open
Abstract
The Mukaiyama aldol reaction is generally a Lewis-acid catalyzed cross-aldol reaction between an aldehyde or ketone and silyl enol ether. It was first described by Mukaiyama in 1973, almost 5 decades ago, to achieve the enantioselective synthesis of β-hydroxy carbonyl compounds in high percentage yields. Mukaiyama aldol adducts play a pivotal role in the synthesis of various naturally occurring and medicinally important organic compounds such as polyketides, alkaloids, macrolides, etc. This review highlights the significance of the Mukaiyama aldol reaction towards the asymmetric synthesis of a wide range of biologically active natural products reported recently (since 2020).
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Affiliation(s)
- Aqsa Mushtaq
- Department of Chemistry, Government College University Faisalabad 38000 Faisalabad Pakistan
| | - Ameer Fawad Zahoor
- Department of Chemistry, Government College University Faisalabad 38000 Faisalabad Pakistan
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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5
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Abstract
![]()
The complete carbon
framework of the macrocyclic marine natural
product amphidinolide F has been prepared by a convergent synthetic
route in which three fragments of similar size and complexity have
been coupled. Key features of the syntheses of the fragments include
the stereoselective construction of the tetrahydrofuran in the C1–C9
fragment by oxonium ylide (free or metal-bound) formation and rearrangement
triggered by the direct generation of a rhodium carbenoid from 1-sulfonyl-1,2,3-triazole,
the highly diastereoselective aldol reaction between a boron enolate
and an aldehyde with 1,4-control to prepare the C10–C17 fragment,
and the formation of the tetrahydrofuran in the C18–C29 fragment
by intramolecular nucleophilic ring opening of an epoxide with a hydroxyl
group under acidic conditions.
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Affiliation(s)
- Filippo Romiti
- School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, U.K
| | - Ludovic Decultot
- School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, U.K
| | - J Stephen Clark
- School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, U.K
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Caso A, da Silva FB, Esposito G, Teta R, Sala GD, Cavalcanti LPAN, Valverde AL, Martins RCC, Costantino V. Exploring Chemical Diversity of Phorbas Sponges as a Source of Novel Lead Compounds in Drug Discovery. Mar Drugs 2021; 19:667. [PMID: 34940666 PMCID: PMC8708981 DOI: 10.3390/md19120667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 12/30/2022] Open
Abstract
Porifera, commonly referred to as marine sponges, are acknowledged as major producers of marine natural products (MNPs). Sponges of the genus Phorbas have attracted much attention over the years. They are widespread in all continents, and several structurally unique compounds have been identified from this species. Terpenes, mainly sesterterpenoids, are the major secondary metabolites isolated from Phorbas species, even though several alkaloids and steroids have also been reported. Many of these compounds have presented interesting biological activities. Particularly, Phorbas sponges have been demonstrated to be a source of cytotoxic metabolites. In addition, MNPs exhibiting cytostatic, antimicrobial, and anti-inflammatory activities have been isolated and structurally characterized. This review provides an overview of almost 130 secondary metabolites from Phorbas sponges and their biological activities, and it covers the literature since the first study published in 1993 until November 2021, including approximately 60 records. The synthetic routes to the most interesting compounds are briefly outlined.
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Affiliation(s)
- Alessia Caso
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano, 49, 80131 Naples, Italy; (A.C.); (G.E.); (R.T.)
| | - Fernanda Barbosa da Silva
- Instituto de Química de Produtos Naturais Walter Mors, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Rio de Janeiro 21941-599, Brazil; (F.B.d.S.); (L.P.A.N.C.); (R.C.C.M.)
| | - Germana Esposito
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano, 49, 80131 Naples, Italy; (A.C.); (G.E.); (R.T.)
| | - Roberta Teta
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano, 49, 80131 Naples, Italy; (A.C.); (G.E.); (R.T.)
| | - Gerardo Della Sala
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80125 Naples, Italy;
| | - Laura P. A. Nunes Cavalcanti
- Instituto de Química de Produtos Naturais Walter Mors, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Rio de Janeiro 21941-599, Brazil; (F.B.d.S.); (L.P.A.N.C.); (R.C.C.M.)
| | - Alessandra Leda Valverde
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Niterói, Rio de Janeiro 24020-141, Brazil;
| | - Roberto Carlos C. Martins
- Instituto de Química de Produtos Naturais Walter Mors, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Rio de Janeiro 21941-599, Brazil; (F.B.d.S.); (L.P.A.N.C.); (R.C.C.M.)
| | - Valeria Costantino
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano, 49, 80131 Naples, Italy; (A.C.); (G.E.); (R.T.)
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7
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Kandasamy M, Huang YH, Ganesan B, Senadi GC, Lin WY. In Situ Generation of Alkynylzinc and Its Subsequent Negishi Reaction in a Flow Reactor. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900471] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mohanraj Kandasamy
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; 807 Kaohsiung Taiwan
| | - Yu- Hsuan Huang
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; 807 Kaohsiung Taiwan
| | - Balaji Ganesan
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; 807 Kaohsiung Taiwan
| | - Gopal Chandru Senadi
- Department of Chemistry; Faculty of Engineering and Technology; SRM Institute of Science and Technology; 603203 Kattankulathur Chennai India
| | - Wei-Yu Lin
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; 807 Kaohsiung Taiwan
- Department of Medical Research; Kaohsiung Medical University Hospital; 807 Kaohsiung Taiwan
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8
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Qiu SQ, Ahmad T, Xu YH, Loh TP. Palladium-Catalyzed Cascade Intramolecular Cyclization and Allylation of Enynoates with Allylic Alcohols. J Org Chem 2019; 84:6729-6736. [PMID: 31081618 DOI: 10.1021/acs.joc.9b00461] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A Pd(II)-catalyzed mild and highly regioselective 6- endo cyclization/allylation reaction of enynoates with simple allylic alcohols has been developed. Under mild reaction conditions, the vinyl palladium species generated in situ after cyclization could insert C-C double bond of allylic alcohol through cross-coupling reaction and lead to the formation of allyl pyrone via β-OH elimination. This cascade cross-coupling reaction represents a direct and atom economic methodology for the construction of novel allyl pyrones in moderate to good yields.
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Affiliation(s)
- Sheng-Qi Qiu
- Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Tanveer Ahmad
- Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Yun-He Xu
- Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Teck-Peng Loh
- Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371
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9
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Vinyl nosylates as partner in copper and silver co-catalyzed Sonogashira cross-coupling reactions. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Ahmad T, Qiu SQ, Xu YH, Loh TP. Palladium-Catalyzed One-Pot Highly Regioselective 6-Endo Cyclization and Alkylation of Enynoates: Synthesis of 2-Alkanone Pyrones. J Org Chem 2018; 83:13414-13426. [DOI: 10.1021/acs.joc.8b02198] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tanveer Ahmad
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Sheng-Qi Qiu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Yun-He Xu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Teck-Peng Loh
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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11
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Yao Y, Cai L, Seiple IB. Synthesis, Structural Reassignment, and Antibacterial Evaluation of 2,18-Seco-Lankacidinol B. Angew Chem Int Ed Engl 2018; 57:13551-13554. [PMID: 30133094 PMCID: PMC6494672 DOI: 10.1002/anie.201808612] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Indexed: 12/15/2022]
Abstract
Lankacidins are a group of polyketide natural products with activity against several strains of Gram-positive bacteria. We developed a route to stereochemically diverse variants of 2,18-seco-lankacidinol B and found that the stereochemical assignment at C4 requires revision. This has interesting implications for the biosynthesis of natural products of the lankacidin class, all of which possessed uniform stereochemistry prior to this finding. We have evaluated 2,18-seco-lankacidinol B and three stereochemical derivatives against a panel of pathogenic Gram-positive and Gram-negative bacteria.
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Affiliation(s)
- Yanmin Yao
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, 94158, USA
| | - Lingchao Cai
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, 94158, USA
| | - Ian B Seiple
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, 94158, USA
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12
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Yao Y, Cai L, Seiple IB. Synthesis, Structural Reassignment, and Antibacterial Evaluation of 2,18-Seco
-Lankacidinol B. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808612] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yanmin Yao
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute; University of California, San Francisco; San Francisco CA 94158 USA
| | - Lingchao Cai
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute; University of California, San Francisco; San Francisco CA 94158 USA
| | - Ian B. Seiple
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute; University of California, San Francisco; San Francisco CA 94158 USA
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13
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Mohammadi E, Movassagh B. A polystyrene supported [PdCl–(SeCSe)] complex: a novel, reusable and robust heterogeneous catalyst for the Sonogashira synthesis of 1,2-disubstituted alkynes and 1,3-enynes. NEW J CHEM 2018. [DOI: 10.1039/c8nj01042k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PS-[PdCl–(SeCSe)] has been introduced as a novel and heterogeneous catalyst, which exhibits outstanding catalytic activity in the Sonogashira cross-coupling reactions.
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Affiliation(s)
- Elmira Mohammadi
- Department of Chemistry
- K. N. Toosi University of Technology
- Tehran
- Iran
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14
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Chinta BS, Baire B. First Synthesis of the [5-5-6-6] Tetracyclic Framework of Spiropreussione B. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700464] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Beeraiah Baire
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
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15
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Williams S, Jin J, Kan SBJ, Li M, Gibson LJ, Paterson I. An Expedient Total Synthesis of Chivosazole F: an Actin-Binding Antimitotic Macrolide from the Myxobacterium Sorangium Cellulosum. Angew Chem Int Ed Engl 2016; 56:645-649. [PMID: 27897365 PMCID: PMC6680201 DOI: 10.1002/anie.201610636] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Indexed: 01/04/2023]
Abstract
A unified strategy for the chemical synthesis of the chivosazoles is described. This strategy is based on two closely related approaches involving the late‐stage installation of the isomerization‐prone (2Z,4E,6Z,8E)‐tetraenoate motif, and an expedient fragment‐assembly procedure. The result is a highly convergent total synthesis of chivosazole F through the orchestration of three mild Pd/Cu‐mediated Stille cross‐coupling reactions, including the use of a one‐pot, site‐selective, three‐component process, in combination with controlled installation of the requisite alkene geometry.
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Affiliation(s)
- Simon Williams
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Jialu Jin
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - S B Jennifer Kan
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Mungyuen Li
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Lisa J Gibson
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Ian Paterson
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
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16
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Williams S, Jin J, Kan SBJ, Li M, Gibson LJ, Paterson I. An Expedient Total Synthesis of Chivosazole F: an Actin-Binding Antimitotic Macrolide from the Myxobacterium Sorangium Cellulosum. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201610636] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Simon Williams
- University Chemical Laboratory; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Jialu Jin
- University Chemical Laboratory; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - S. B. Jennifer Kan
- University Chemical Laboratory; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Mungyuen Li
- University Chemical Laboratory; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Lisa J. Gibson
- University Chemical Laboratory; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Ian Paterson
- University Chemical Laboratory; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
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17
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Marković D, Tchawou WA, Novosjolova I, Laclef S, Stepanovs D, Turks M, Vogel P. Synthesis and Applications of Silyl 2-Methylprop-2-ene-1-sulfinates in Preparative Silylation and GC-Derivatization Reactions of Polyols and Carbohydrates. Chemistry 2016; 22:4196-205. [DOI: 10.1002/chem.201504380] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Dean Marković
- Laboratoire de glycochimie et de synthèse asymétrique; Swiss Federal Institute of Technology of Lausanne (EPFL); Lausanne 1015 Switzerland), Fax: (+41) 21-693-93-55
- Chemistry Department; University of Osijek; Osijek Ulica cara Hadrijana 8A Croatia 31000
- Department of Biotechnology; University of Rijeka; Radmile Matejčić 2 51000 Rijeka Croatia
| | - Wandji Augustin Tchawou
- Laboratoire de glycochimie et de synthèse asymétrique; Swiss Federal Institute of Technology of Lausanne (EPFL); Lausanne 1015 Switzerland), Fax: (+41) 21-693-93-55
| | - Irina Novosjolova
- Faculty of Materials Science and Applied Chemistry; Riga Technical University; P. Valdena Str. 3 Riga 1007 Latvia
| | - Sylvain Laclef
- Laboratoire de glycochimie et de synthèse asymétrique; Swiss Federal Institute of Technology of Lausanne (EPFL); Lausanne 1015 Switzerland), Fax: (+41) 21-693-93-55
| | - Dmitrijs Stepanovs
- Faculty of Materials Science and Applied Chemistry; Riga Technical University; P. Valdena Str. 3 Riga 1007 Latvia
- Latvian Institute of Organic Synthesis; Aizkraukles Str. 21 Riga 1006 Latvia
| | - Māris Turks
- Faculty of Materials Science and Applied Chemistry; Riga Technical University; P. Valdena Str. 3 Riga 1007 Latvia
| | - Pierre Vogel
- Laboratoire de glycochimie et de synthèse asymétrique; Swiss Federal Institute of Technology of Lausanne (EPFL); Lausanne 1015 Switzerland), Fax: (+41) 21-693-93-55
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18
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Dantas CR, de Freitas JJR, Barbosa QPS, Militão GCG, Silva TDS, da Silva TG, Paulino AAS, Freitas JCR, Oliveira RA, Menezes PH. Stereoselective synthesis and antitumoral activity of Z-enyne pseudoglycosides. Org Biomol Chem 2016; 14:6786-94. [DOI: 10.1039/c6ob00945j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The stereoselective synthesis and antitumoral activity of Z-enyne pseudoglycosides is described.
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Frost JR, Pearson CM, Snaddon TN, Booth RA, Turner RM, Gold J, Shaw DM, Gaunt MJ, Ley SV. Callipeltosides A, B and C: Total Syntheses and Structural Confirmation. Chemistry 2015; 21:13261-77. [PMID: 26230615 PMCID: PMC4583783 DOI: 10.1002/chem.201501877] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Indexed: 12/31/2022]
Abstract
Since their isolation almost 20 years ago, the callipeltosides have been of long standing interest to the synthetic community owing to their unique structural features and inherent biological activity. Herein we present our full research effort that has led to the synthesis of these molecules. Key aspects of our final strategy include 1) synthesis of the C1-C9 pyran core (5) using an AuCl3 -catalysed cyclisation; 2) formation of C10-C22 vinyl iodide (55) by sequential bidirectional Stille reactions and 3) diastereoselective union of these advanced fragments by means of an alkenylzinc addition (d.r.=91:9 at C9). The common callipeltoside aglycon (4) was completed in a further five steps. Following this, all three sugar fragments were appended to provide the entire callipeltoside family. In addition to this, D-configured callipeltose B was synthesised and appended to the callipeltoside aglycon. The (1) H NMR spectrum of this molecule was found to be significantly different to the natural isolate, further supporting our assignment of callipeltoside B (2).
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Affiliation(s)
- James R Frost
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK).
| | - Colin M Pearson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - Thomas N Snaddon
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
- Current address: Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47405 (USA)
| | - Richard A Booth
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - Richard M Turner
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - Johan Gold
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - David M Shaw
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - Matthew J Gaunt
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK)
| | - Steven V Ley
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK).
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20
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Tian PP, Cai SH, Liang QJ, Zhou XY, Xu YH, Loh TP. Palladium-Catalyzed Difunctionalization of Internal Alkynes via Highly Regioselective 6-Endo Cyclization and Alkenylation of Enynoates: Synthesis of Multisubstituted Pyrones. Org Lett 2015; 17:1636-9. [DOI: 10.1021/acs.orglett.5b00272] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pan-Pan Tian
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Sai-Hu Cai
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | | | - Xing-Yi Zhou
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Yun-He Xu
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Teck-Peng Loh
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore 637371, Singapore
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21
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Yang Y, Zhang X, Yu B. O-Glycosylation methods in the total synthesis of complex natural glycosides. Nat Prod Rep 2015; 32:1331-55. [DOI: 10.1039/c5np00033e] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We highlight the total syntheses of 33 complex natural O-glycosides, with a particular focus on the O-glycosylation methods that enable the connection of the saccharides and aglycones.
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Affiliation(s)
- You Yang
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiaheng Zhang
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Biao Yu
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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22
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Paterson I, Housden MP, Cordier CJ, Burton PM, Mühlthau FA, Loiseleur O. Synthetic studies toward the brasilinolides: controlled assembly of a protected C1–C38 polyol based on fragment union by complex aldol reactions. Org Biomol Chem 2015; 13:5716-33. [DOI: 10.1039/c5ob00498e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A modular strategy for the synthesis of the immunosuppressant macrolide brasilinolide A was adopted based on coupling suitable northern and southern fragments.
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23
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Paterson I, Ng KKH, Williams S, Millican DC, Dalby SM. Total synthesis of the antimitotic marine macrolide (-)-leiodermatolide. Angew Chem Int Ed Engl 2014; 53:2692-5. [PMID: 24481746 PMCID: PMC4499261 DOI: 10.1002/anie.201310164] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Indexed: 11/10/2022]
Abstract
Leiodermatolide is an antimitotic macrolide isolated from the marine sponge Leiodermatium sp. whose potentially novel tubulin-targeting mechanism of action makes it an exciting lead for anticancer drug discovery. In pursuit of a sustainable supply, we report a highly stereocontrolled total synthesis (3.2% yield) based on a convergent sequence of palladium-mediated fragment assembly and macrolactonization. Boron-mediated aldol reactions were used to configure the three key fragments 2, 5, and 6 by employing the appropriate enantiomer of the lactate-derived ketone 7.
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Affiliation(s)
- Ian Paterson
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK) http://www-paterson.ch.cam.ac.uk.
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24
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Paterson I, Ng KKH, Williams S, Millican DC, Dalby SM. Total Synthesis of the Antimitotic Marine Macrolide (−)-Leiodermatolide. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310164] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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25
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Kalesse M, Cordes M, Symkenberg G, Lu HH. The vinylogous Mukaiyama aldol reaction (VMAR) in natural product synthesis. Nat Prod Rep 2014; 31:563-94. [DOI: 10.1039/c3np70102f] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
This review will provide an overview on the recent developments of polyketide synthesis using the vinylogous Mukaiyama aldol reaction for the construction of advanced intermediates. In general, four different motifs can be constructed efficiently using the recent developments of asymmetric variants of this strategy.
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Affiliation(s)
- Markus Kalesse
- Institute for Organic Chemistry and Centre of Biomolecular Drug Research (BMWZ)
- Leibniz Universität Hannover
- 30167 Hannover, Germany
- Helmholtz Centre for Infection Research (HZI)
- Braunschweig, Germany
| | - Martin Cordes
- Institute for Organic Chemistry and Centre of Biomolecular Drug Research (BMWZ)
- Leibniz Universität Hannover
- 30167 Hannover, Germany
| | - Gerrit Symkenberg
- Institute for Organic Chemistry and Centre of Biomolecular Drug Research (BMWZ)
- Leibniz Universität Hannover
- 30167 Hannover, Germany
| | - Hai-Hua Lu
- Institute for Organic Chemistry and Centre of Biomolecular Drug Research (BMWZ)
- Leibniz Universität Hannover
- 30167 Hannover, Germany
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26
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Abstract
This review will focus on selected applications of Sonogashira coupling and subsequent transformations as key steps in the total synthesis of natural products.
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Affiliation(s)
- Dan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- East China Normal University
- Shanghai 200062, China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- East China Normal University
- Shanghai 200062, China
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27
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Kan SBJ, Ng KK, Paterson I. Die Bedeutung der Mukaiyama‐Aldolreaktion für die Totalsynthese. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303914] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- S. B. Jennifer Kan
- Laboratory of Synthetic Organic Chemistry and Special Laboratory of Organocatalytic Chemistry, Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606‐8502 (Japan)
| | - Kenneth K.‐H. Ng
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (Großbritannien) http://www‐paterson.ch.cam.ac.uk
| | - Ian Paterson
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (Großbritannien) http://www‐paterson.ch.cam.ac.uk
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28
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Kan SBJ, Ng KKH, Paterson I. The impact of the Mukaiyama aldol reaction in total synthesis. Angew Chem Int Ed Engl 2013; 52:9097-108. [PMID: 23893491 DOI: 10.1002/anie.201303914] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Indexed: 01/20/2023]
Abstract
Four decades since Mukaiyama's first reports on the successful application of silicon and boron enolates in directed aldol reactions, the ability of this highly controlled carbon-carbon bond-forming method to simultaneously define stereochemistry, introduce complexity, and construct the carbon skeleton with a characteristic 1,3-oxygenation pattern has made it a powerful tool for natural product synthesis. This Minireview highlights a number of representative total syntheses that demonstrate the impact of the Mukaiyama aldol reaction and discusses the underlying mechanistic rationale that determines the stereochemical outcomes.
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Affiliation(s)
- S B Jennifer Kan
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
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29
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Paterson I, Maltas P, Anderson EA. Total synthesis of (+)-spirastrellolide A methyl ester: Challenges and discoveries. PURE APPL CHEM 2013. [DOI: 10.1351/pac-con-13-01-01] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This review focuses on recent synthetic efforts by our group towards spirastrellolide A methyl ester, a complex marine macrolide containing two spiroacetal ring systems that shows promising anticancer properties. The evolution of a flexible, modular strategy leading to the first total synthesis of (+)-spirastrellolide A methyl ester, and the associated challenges overcome, are highlighted, particularly in dealing with the initial structural ambiguities. This work enabled the development of an improved second-generation synthesis, which revealed a critical dependence of the key macrolactonization step on the nature of the protecting groups in the linker region between the spiroacetal motifs.
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Affiliation(s)
- Ian Paterson
- 1University Chemical Laboratory, Lensfield Road, Cambridge CB2 1EW, UK
| | - Philip Maltas
- 1University Chemical Laboratory, Lensfield Road, Cambridge CB2 1EW, UK
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30
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31
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Paterson I, Haslett GW. Synthesis of the C1–C11 Western Fragment of Madeirolide A. Org Lett 2013; 15:1338-41. [DOI: 10.1021/ol400280b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Ian Paterson
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Gregory W. Haslett
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
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32
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Parenty A, Moreau X, Niel G, Campagne JM. Update 1 of: Macrolactonizations in the Total Synthesis of Natural Products. Chem Rev 2013; 113:PR1-40. [DOI: 10.1021/cr300129n] [Citation(s) in RCA: 148] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- A. Parenty
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
| | - X. Moreau
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-Saint-Quentin-en-Yvelines, 45 Avenue des Etats-Unis, 78035 Versailles Cedex, France
| | - Gilles Niel
- Institut Charles Gerhardt, UMR5253, Ecole Nationale Supérieure de Chimie, 8 rue de l’Ecole Normale, F-34296 Montpellier, France
| | - J.-M. Campagne
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
- Institut Charles Gerhardt, UMR5253, Ecole Nationale Supérieure de Chimie, 8 rue de l’Ecole Normale, F-34296 Montpellier, France
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34
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Molinski TF, Morinaka BI. INTEGRATED APPROACHES TO THE CONFIGURATIONAL ASSIGNMENT OF MARINE NATURAL PRODUCTS. Tetrahedron 2012; 68:9307-9343. [PMID: 23814320 PMCID: PMC3694619 DOI: 10.1016/j.tet.2011.12.070] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Tadeusz F. Molinski
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive MC0358, La Jolla, CA, 92093
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Drive MC0358, La Jolla, CA, 92093
| | - Brandon I. Morinaka
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive MC0358, La Jolla, CA, 92093
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35
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Paterson I, Anderson EA, Dalby SM, Lim JH, Maltas P, Loiseleur O, Genovino J, Moessner C. The stereocontrolled total synthesis of spirastrellolide A methyl ester. Expedient construction of the key fragments. Org Biomol Chem 2012; 10:5861-72. [PMID: 22504866 DOI: 10.1039/c2ob25100k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Due to a combination of their promising anticancer properties, limited supply from the marine sponge source and their unprecedented molecular architecture, spirastrellolides represent attractive and challenging synthetic targets. A modular strategy for the synthesis of spirastrellolide A methyl ester, which allowed for the initial stereochemical uncertainties in the assigned structure was adopted, based on the envisaged sequential coupling of a series of suitably functionalised fragments; in this first paper, full details of the synthesis of these fragments are described. The pivotal C26-C40 DEF bis-spiroacetal was assembled by a double Sharpless asymmetric dihydroxylation/acetalisation cascade process on a linear diene intermediate, configuring the C31 and C35 acetal centres under suitably mild acidic conditions. A C1-C16 alkyne fragment was constructed by application of an oxy-Michael reaction to introduce the A-ring tetrahydropyran, a Sakurai allylation to install the C9 hydroxyl, and a 1,4-syn boron aldol/directed reduction sequence to establish the C11 and C13 stereocentres. Two different coupling strategies were investigated to elaborate the C26-C40 DEF fragment, involving either a C17-C25 sulfone or a C17-C24 vinyl iodide, each of which was prepared using an Evans glycolate aldol reaction. The remaining C43-C47 vinyl stannane fragment required for introduction of the unsaturated side chain was prepared from (R)-malic acid.
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Affiliation(s)
- Ian Paterson
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
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36
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Abstract
Covering: 2010. Previous review: Nat. Prod. Rep., 2011, 28, 196. This review covers the literature published in 2010 for marine natural products, with 895 citations (590 for the period January to December 2010) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1003 for 2010), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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37
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Paterson I, Steadman neé Doughty VA, McLeod MD, Trieselmann T. Stereocontrolled total synthesis of (+)-concanamycin F: the strategic use of boron-mediated aldol reactions of chiral ketones. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.09.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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38
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Casiraghi G, Battistini L, Curti C, Rassu G, Zanardi F. The Vinylogous Aldol and Related Addition Reactions: Ten Years of Progress. Chem Rev 2011; 111:3076-154. [DOI: 10.1021/cr100304n] [Citation(s) in RCA: 454] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Giovanni Casiraghi
- Dipartimento Farmaceutico, Università degli Studi di Parma, Viale G. P. Usberti 27A, I-43124 Parma, Italy
| | - Lucia Battistini
- Dipartimento Farmaceutico, Università degli Studi di Parma, Viale G. P. Usberti 27A, I-43124 Parma, Italy
| | - Claudio Curti
- Dipartimento Farmaceutico, Università degli Studi di Parma, Viale G. P. Usberti 27A, I-43124 Parma, Italy
| | - Gloria Rassu
- Istituto di Chimica Biomolecolare del CNR, Traversa La Crucca 3, I-07100 Li Punti, Sassari, Italy
| | - Franca Zanardi
- Dipartimento Farmaceutico, Università degli Studi di Parma, Viale G. P. Usberti 27A, I-43124 Parma, Italy
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39
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Affiliation(s)
- Rafael Chinchilla
- Departamento de Química Orgánica, Facultad de Ciencias and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apartado 99, 03080 Alicante, Spain.
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40
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La Ferla B, Airoldi C, Zona C, Orsato A, Cardona F, Merlo S, Sironi E, D'Orazio G, Nicotra F. Natural glycoconjugates with antitumor activity. Nat Prod Rep 2010; 28:630-48. [PMID: 21120227 DOI: 10.1039/c0np00055h] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Cancer is one of the major causes of death worldwide. As a consequence, many different therapeutic approaches, including the use of glycosides as anticancer agents, have been developed. Various glycosylated natural products exhibit high activity against a variety of microbes and human tumors. In this review we classify glycosides according to the nature of their aglycone (non-saccharidic) part. Among them, we describe anthracyclines, aureolic acids, enediyne antibiotics, macrolide and glycopeptides presenting different strengths and mechanisms of action against human cancers. In some cases, the glycosidic residue is crucial for their activity, such as in anthracycline, aureolic acid and enediyne antibiotics; in other cases, Nature has exploited glycosylation to improve solubility or pharmacokinetic properties, as in the glycopeptides. In this review we focus our attention on natural glycoconjugates with anticancer properties. The structure of several of the carbohydrate moieties found in these conjugates and their role are described. The structure–activity relationship of some of these compounds, together with the structural features of their interaction with the biological targets, are also reported. Taken together, all this information is useful for the design of new potential anti-tumor drugs.
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Affiliation(s)
- Barbara La Ferla
- Department of Biotechnology and Bioscience, University of Milano Bicocca, Piazza della Scienza 2, I-20126, Milano, Italy.
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41
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Paterson I, Gibson LJ, Kan SBJ. Synthesis of the C15-C35 northern hemisphere subunit of the chivosazoles. Org Lett 2010; 12:5530-3. [PMID: 21043512 DOI: 10.1021/ol102425n] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
An advanced C15-C35 subunit of the chivosazole polyene macrolides was prepared in a convergent manner, exploiting boron-mediated aldol reactions for the stereocontrolled construction of the C15-C26 and C27-C35 segments, followed by their Pd/Cu-promoted Stille coupling to configure the signature (23E,25E,27Z)-triene motif. Correlation with a known C28-C35 degradation fragment of chivosazole A was also achieved.
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Affiliation(s)
- Ian Paterson
- University Chemical Laboratory, Lensfield Road, Cambridge, CB2 1EW, UK.
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42
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Molinski TF. Microscale methodology for structure elucidation of natural products. Curr Opin Biotechnol 2010; 21:819-26. [PMID: 20880694 DOI: 10.1016/j.copbio.2010.09.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2010] [Revised: 09/01/2010] [Accepted: 09/02/2010] [Indexed: 11/15/2022]
Abstract
Advances in microscale spectroscopic techniques, particularly microcryoprobe NMR, allow discovery and structure elucidation of new molecules down to only a few nanomole. Newer methods for utilizing circular dichroism (CD) have pushed the limits of detection to picomole levels. NMR and CD methods are complementary to the task of elucidation of complete stereostructures of complex natural products. Together, integrated microprobe NMR spectroscopy, microscale degradation and synthesis, are synergistic tools for the discovery of bioactive natural products and have opened new realms for discovery among extreme sources including compounds from uncultured microbes, rare invertebrates and environmental samples.
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Affiliation(s)
- Tadeusz F Molinski
- Department of Chemistry and Biochemistry and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, 9500 Gilman Drive MC0358, CA 92093, USA.
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