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Expeditious Asymmetric Synthesis of Polypropionates Relying on Sulfur Dioxide-Induced C–C Bond Forming Reactions. Catalysts 2021. [DOI: 10.3390/catal11111267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
For a long time, the organic chemistry of sulfur dioxide (SO2) consisted of sulfinates that react with carbon electrophiles to generate sulfones. With alkenes and other unsaturated compounds, SO2 generates polymeric materials such as polysulfones. More recently, H-ene, sila-ene and hetero-Diels–Alder reactions of SO2 have been realized under conditions that avoid polymer formation. Sultines resulting from the hetero-Diels–Alder reactions of conjugated dienes and SO2 are formed more rapidly than the corresponding more stable sulfolenes resulting from the cheletropic additions. In the presence of a protic or Lewis acid catalyst, the sultines derived from 1-alkoxydienes are ionized into zwitterionic intermediates bearing 1-alkoxyallylic cation moieties which react with electro-rich alkenes such as enol silyl ethers and allylsilanes with high stereoselectivity. (C–C-bond formation through Umpolung induced by SO2). This produces silyl sulfinates that react with carbon electrophiles to give sulfones (one-pot four component asymmetric synthesis of sulfones), or with Cl2, generating the corresponding sulfonamides that can be reacted in situ with primary and secondary amines (one-pot four component asymmetric synthesis of sulfonamides). Alternatively, Pd-catalyzed desulfinylation generates enantiomerically pure polypropionate stereotriads in one-pot operations. The chirons so obtained are flanked by an ethyl ketone moiety on one side and by a prop-1-en-1-yl carboxylate group on the other. They are ready for two-directional chain elongations, realizing expeditious synthesis of long-chain polypropionates and polyketides. The stereotriads have also been converted into simpler polypropionates such as the cyclohexanone moiety of baconipyrone A and B, Kishi’s stereoheptad unit of rifamycin S, Nicolaou’s C1–C11-fragment and Koert’s C16–CI fragment of apoptolidin A. This has also permitted the first total synthesis of (-)-dolabriferol.
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2
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Avila C, Angulo-Preckler C. Bioactive Compounds from Marine Heterobranchs. Mar Drugs 2020; 18:657. [PMID: 33371188 PMCID: PMC7767343 DOI: 10.3390/md18120657] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/05/2020] [Accepted: 12/07/2020] [Indexed: 12/22/2022] Open
Abstract
The natural products of heterobranch molluscs display a huge variability both in structure and in their bioactivity. Despite the considerable lack of information, it can be observed from the recent literature that this group of animals possesses an astonishing arsenal of molecules from different origins that provide the molluscs with potent chemicals that are ecologically and pharmacologically relevant. In this review, we analyze the bioactivity of more than 450 compounds from ca. 400 species of heterobranch molluscs that are useful for the snails to protect themselves in different ways and/or that may be useful to us because of their pharmacological activities. Their ecological activities include predator avoidance, toxicity, antimicrobials, antifouling, trail-following and alarm pheromones, sunscreens and UV protection, tissue regeneration, and others. The most studied ecological activity is predation avoidance, followed by toxicity. Their pharmacological activities consist of cytotoxicity and antitumoral activity; antibiotic, antiparasitic, antiviral, and anti-inflammatory activity; and activity against neurodegenerative diseases and others. The most studied pharmacological activities are cytotoxicity and anticancer activities, followed by antibiotic activity. Overall, it can be observed that heterobranch molluscs are extremely interesting in regard to the study of marine natural products in terms of both chemical ecology and biotechnology studies, providing many leads for further detailed research in these fields in the near future.
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Affiliation(s)
- Conxita Avila
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Biodiversity Research Institute (IrBIO), Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain;
| | - Carlos Angulo-Preckler
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Biodiversity Research Institute (IrBIO), Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain;
- Norwegian College of Fishery Science, UiT The Arctic University of Norway, Hansine Hansens veg 18, 9019 Tromsø, Norway
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Bandaru A, Si D, Kaliappan KP. Synthesis of C
1
−C
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and C
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Fragments of (−)‐Dolabriferol. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anandaraju Bandaru
- Department of ChemistryIndian Institute of Technology Bombay Powai, Mumbai 400076 India
| | - Debjani Si
- Department of ChemistryIndian Institute of Technology Bombay Powai, Mumbai 400076 India
| | - Krishna P. Kaliappan
- Department of ChemistryIndian Institute of Technology Bombay Powai, Mumbai 400076 India
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4
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Gantasala N, Borra S, Pabbaraja S. Stereoselective Total Synthesis of the Non-Contiguous Polyketide Natural Product (-)-Dolabriferol. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Naresh Gantasala
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Tarnaka, Hyderabad - Telangana India
- Academy of Scientific and Innovative Research (AcSIR); Anusandhan Bhawan; 2-Rafi Marg 110001 New Delhi India
| | - Suresh Borra
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Tarnaka, Hyderabad - Telangana India
- Academy of Scientific and Innovative Research (AcSIR); Anusandhan Bhawan; 2-Rafi Marg 110001 New Delhi India
| | - Srihari Pabbaraja
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Tarnaka, Hyderabad - Telangana India
- Academy of Scientific and Innovative Research (AcSIR); Anusandhan Bhawan; 2-Rafi Marg 110001 New Delhi India
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5
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Karagiannis A, Diddi N, Ward DE. On the Origin of Dolabriferol: Total Synthesis via Its Putative Contiguous Precursor. Org Lett 2016; 18:3794-7. [DOI: 10.1021/acs.orglett.6b01798] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Athanasios Karagiannis
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
| | - Naveen Diddi
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
| | - Dale E. Ward
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
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6
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Gesinski MR, Brenzovich WE, Staben ST, Srinilta DJ, Toste FD. A divergent/convergent approach to dolabriferol: the Kornblum–DeLaMare enantiomeric resolution. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.02.067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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7
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Richter C, Voigt B, Mahrwald R. Amine-catalyzed cascade reactions of ketoses with 1,3-dicarbonyl compounds. RSC Adv 2015. [DOI: 10.1039/c5ra08757k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An amine-catalyzed cascade reaction of ketoses with 1,3-dicarbonyl compounds is described.
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Affiliation(s)
- Celin Richter
- Humboldt-University
- Institute of Chemistry
- 12489 Berlin
- Germany
| | - Benjamin Voigt
- Humboldt-University
- Institute of Chemistry
- 12489 Berlin
- Germany
| | - Rainer Mahrwald
- Humboldt-University
- Institute of Chemistry
- 12489 Berlin
- Germany
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8
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Jiménez-Romero C, González K, Rodríguez AD. Dolabriferols B and C, non-contiguous polypropionate esters from the tropical sea hare Dolabrifera dolabrifera. Tetrahedron Lett 2012; 53:6641-6645. [PMID: 23264703 DOI: 10.1016/j.tetlet.2012.09.068] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The Caribbean mollusc Dolabrifera dolabrifera from Puerto Rico contains two new propionate-derived metabolites, dolabriferol B and C (2 and 3), in addition to the known compound dolabriferol (1). The structures of dolabriferol B (2) and C (3) were established by comparison of their spectral data with those of 1, and the absolute configuration of 2 was determined from chemical degradation studies. The structure of dolabriferol C (3) was confirmed by X-ray analysis.
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Affiliation(s)
- Carlos Jiménez-Romero
- Department of Chemistry, University of Puerto Rico, PO Box 23346, UPR Station, San Juan, PR 00931-3346, United States
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11
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Becerril-Jiménez F, Ward DE. On the Origin of Siphonariid Polypropionates: Total Synthesis of Caloundrin B and Its Isomerization to Siphonarin B. Org Lett 2012; 14:1648-51. [DOI: 10.1021/ol300432y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fabiola Becerril-Jiménez
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon SK S7N 5C9, Canada
| | - Dale E. Ward
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon SK S7N 5C9, Canada
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12
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Abstract
The strategic use of thiopyran templates to facilitate polypropionate synthesis was first demonstrated in Woodward's landmark total synthesis of erythromycin A in 1981 where the topology of a fused bicyclic system was exploited. In the ensuing three decades, various alternative strategic applications of thiopyran motifs to achieve key stereoselective transformations have emerged including, inter alia, unique substrates for chemoenzymatic syntheses, surrogates for 3-pentanone in enantioselective aldol reactions, and templates for enantiotopic group selective reactions. This review summarizes these developments.
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Affiliation(s)
- Dale E Ward
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada.
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13
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Laclef S, Turks M, Vogel P. Totalsynthese und Bestimmung der absoluten Konfiguration von (−)-Dolabriferol. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003735] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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Laclef S, Turks M, Vogel P. Total Synthesis and Determination of the Absolute Configuration of (−)-Dolabriferol. Angew Chem Int Ed Engl 2010; 49:8525-7. [DOI: 10.1002/anie.201003735] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Beye GE, Ward DE. On the Origin of Siphonariid Polypropionates: Total Synthesis of Baconipyrone A, Baconipyrone C, and Siphonarin B via their Putative Common Precursor. J Am Chem Soc 2010; 132:7210-5. [DOI: 10.1021/ja102356j] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Garrison E. Beye
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
| | - Dale E. Ward
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
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16
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Farard J, Logé C, Pfeiffer B, Lesur B, Duflos M. A convenient synthesis of 5-arylamino-4H-pyran-4-ones using palladium-catalyzed amination. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.07.139] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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17
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Total synthesis of the marine polypropionates, siphonarienal, siphonarienone, and pectinatone. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.08.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Touré BB, Hall DG. Natural Product Synthesis Using Multicomponent Reaction Strategies. Chem Rev 2009; 109:4439-86. [PMID: 19480390 DOI: 10.1021/cr800296p] [Citation(s) in RCA: 1299] [Impact Index Per Article: 86.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Barry B. Touré
- Department of Oncology Chemistry, Novartis Institutes for Biomedical Research, Inc., 250 Massachusetts Avenue, Cambridge, Massachusetts 02139, and Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Dennis G. Hall
- Department of Oncology Chemistry, Novartis Institutes for Biomedical Research, Inc., 250 Massachusetts Avenue, Cambridge, Massachusetts 02139, and Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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19
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20
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Beye GE, Goodman JM, Ward DE. Synthetic Studies on Siphonariid Polypropionates: Synthesis and Isomerization of the Caloundrin B Trioxaadamantane Ring System. Org Lett 2009; 11:1373-6. [DOI: 10.1021/ol900192q] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Garrison E. Beye
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon SK S7N 5C9, Canada, and University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Jonathan M. Goodman
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon SK S7N 5C9, Canada, and University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Dale E. Ward
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon SK S7N 5C9, Canada, and University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
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Napolitano JG, Souto ML, Fernández JJ, Norte M. Micromelones A and B, noncontiguous polypropionates from Micromelo undata. JOURNAL OF NATURAL PRODUCTS 2008; 71:281-284. [PMID: 18247572 DOI: 10.1021/np070567u] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
In this paper we report on the isolation and structural elucidation of two new noncontiguous polypropionates, micromelones A ( 10) and B ( 11), that have been isolated from the marine gastropod Micromelo undata. Their structures were determined through the interpretation of their spectroscopic data, and a biosynthetic pathway from a common linear precursor with other polypropionate groups has been proposed.
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Affiliation(s)
- José G Napolitano
- Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
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22
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Abstract
At low temperature and in the presence of an acid catalyst, SO2 adds to 1,3-dienes equilibrating with the corresponding 3,6-dihydro-1,2-oxathiin-2-oxides (sultines). These compounds are unstable above -60 °C and equilibrate with the more stable 2,5-dihydrothiophene 1,1-dioxides (sulfolenes). The hetero-Diels-Alder additions of SO2 are suprafacial and follow the Alder endo rule. The sultines derived from 1-oxy-substituted and 1,3-dioxy-disubstituted 1,3-dienes cannot be observed at -100 °C but are believed to be formed faster than the corresponding sulfolenes. In the presence of acid catalysts, the 6-oxy-substituted sultines equilibrate with zwitterionic species that react with electron-rich alkenes such as enoxysilanes and allylsilanes, generating β,γ-unsaturated silyl sulfinates that can be desilylated and desulfinylated to generate polypropionate fragments containing up to three contiguous stereogenic centers and an (E)-alkene unit. Alternatively, the silyl sulfinates can be reacted with electrophiles to generate polyfunctional sulfones (one-pot, four-component synthesis of sulfones), or oxidized into sulfonyl chlorides and reacted with amines, then realizing a one-pot, four-component synthesis of polyfunctional sulfonamides. Using enantiomerically enriched dienes such as 1-[(R)- or 1-(S)-phenylethyloxy]-2-methyl-(E,E)-penta-1,3-dien-3-yl isobutyrate, derived from inexpensive (R)- or (S)-1-phenylethanol, enantiomerically enriched stereotriads are obtained in one-pot operations. The latter are ready for further chain elongation. This has permitted the development of expeditious total asymmetric syntheses of important natural products of biological interest such as the baconipyrones, rifamycin S, and apoptolidin A.
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Gillingham DG, Hoveyda AH. Chiral N-Heterocyclic Carbenes in Natural Product Synthesis: Application of Ru-Catalyzed Asymmetric Ring-Opening/Cross-Metathesis and Cu-Catalyzed Allylic Alkylation to Total Synthesis of Baconipyrone C. Angew Chem Int Ed Engl 2007; 46:3860-4. [PMID: 17415730 DOI: 10.1002/anie.200700501] [Citation(s) in RCA: 150] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dennis G Gillingham
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467, USA
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24
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Gillingham D, Hoveyda A. Chiral N-Heterocyclic Carbenes in Natural Product Synthesis: Application of Ru-Catalyzed Asymmetric Ring-Opening/Cross-Metathesis and Cu-Catalyzed Allylic Alkylation to Total Synthesis of Baconipyrone C. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200700501] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Lopez OD, Goodrich JT, Yang F, Snyder LB. 3-Substituted 4-pyranones: a rapid approach using microwave heating. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.01.151] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Darias J, Cueto M, Díaz-Marrero AR. The chemistry of marine pulmonate gastropods. PROGRESS IN MOLECULAR AND SUBCELLULAR BIOLOGY 2006; 43:105-31. [PMID: 17153340 DOI: 10.1007/978-3-540-30880-5_5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Secondary metabolites from pulmonate molluscs of the genera Siphonaria, Onchidium, and Trimusculus are described. Siphonaria and Onchidium biosynthesize mostly propionate-based metabolites whereas Trimusculus yields diterpene derivatives with a single type of labdane skeleton. The 42 regular polypropionates reported to date from Siphonaria are divided into two classes (class I, class II), based on their observed structural and stereochemical analogy. The strong resemblance between class I and cephalaspidean metabolites and between class II and onchidiid metabolites as well as the structural features of Trimusculus, in relation to the other pulmonates, encourage speculation about their biosynthetic and phylogenetic relationship. Class I metabolites could be suitable material to evidence that type I PKS modules are perhaps used iteratively in their biosynthesis.
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Affiliation(s)
- J Darias
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda Astrofísico F. Sánchez 3 Apdo 195, 38206 La Laguna, Tenerife, Spain
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Garson MJ. Marine mollusks from Australia and New Zealand: chemical and ecological studies. PROGRESS IN MOLECULAR AND SUBCELLULAR BIOLOGY 2006; 43:159-74. [PMID: 17153342 DOI: 10.1007/978-3-540-30880-5_7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Marine mollusks contain structurally diverse terpenes, polyketides, polypropionates and nitrogenous metabolites that may confer an ecological advantage on the host organism. From a chemical perspective, the most studied Australian taxa include representatives of the nudibranchs and sea hares, which are characterised by terpenes acquired from their specialised diets of sponges and algae, respectively. In contrast, siphonariid limpets that are prevalent on temperate seashores carry out de novo biosynthesis of polypropionate metabolites. Nitrogenous compounds isolated from Australian marine mollusks include precursors to the first commercially significant marine bioproduct, Tyrian Purple, and metabolites that are characteristic of ingested cyanobacteria.
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Affiliation(s)
- M J Garson
- School of Molecular and Microbial Sciences, The University of Queensland, QLD 4072, Australia
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Turks M, Murcia MC, Scopelliti R, Vogel P. First Asymmetric Synthesis of the Cyclohexanone Subunit of Baconipyrones A and B. Revision of Its Structure. Org Lett 2004; 6:3031-4. [PMID: 15330580 DOI: 10.1021/ol048988f] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] An asymmetric synthesis of the 3,5-dihydroxycyclohexanone subunit of baconipyrones A and B, as well as that of the hydroxydiketone subunit of baconipyrones C and D ((-)-(4S,6S)-4,6-dimethyl-5-hydroxynonan-3,7-dione), is described. Key steps include sulfur dioxide-induced additions of enoxysilanes to 1,3-dioxy-1,3-dienes, followed by retro-ene desulfitations (retro-ene elimination of SO(2)).
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Affiliation(s)
- Māris Turks
- Laboratory of Glycochemistry and Asymmetric Synthesis, BCH, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland
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Williams DR, Nold AL, Mullins RJ. Asymmetric Conjugate Addition for the Preparation of syn-1,3-Dimethyl Arrays: Synthesis and Structure Elucidation of Capensifuranone. J Org Chem 2004; 69:5374-82. [PMID: 15287784 DOI: 10.1021/jo049567e] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of capensifuranone (1) has been achieved by the application of developments for asymmetric conjugate addition reactions of organocopper reagents with nonracemic N-enoyl-4-phenyl-1,3-oxazolidinones for the preparation of 1,3-syn-dimethyl arrays. The assignment of relative and absolute stereochemistry of 1 has been made following the high-field NMR characterizations of synthetic diol derivatives. The previously unassigned C4 stereochemistry of 1 was determined to be of the (S)-configuration. The thermodynamic equilibration of capensifuranone and its C4 diastereomer has been examined.
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Affiliation(s)
- David R Williams
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, USA.
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Kamino T, Kuramochi K, Kobayashi S. A concise approach to 5-substituted-4-pyrones from kojic acid. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01836-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Dias LC, de Sousa MA. Synthetic studies directed toward the total synthesis of dolabriferol. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01351-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
The spirocyclic core of the siphonarins was constructed by a directed cyclization of a linear triketone, prepared using a Sn(II)-mediated aldol coupling and Swern oxidation at C9 and C13. To circumvent a facile retro-Claisen pathway generating a baconipyrone-type ester, a Ni(II)/ Cr(II)-mediated coupling reaction with vinyl iodide was used to complete the first synthesis of siphonarin B and dihydrosiphonarin B. A stable isomeric spiroacetal was also prepared which could not be equilibrated to the siphonarin skeleton.
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Affiliation(s)
- Ian Paterson
- University Chemical Laboratory, Lensfield Road, Cambridge CB2 1EW, UK.
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33
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Diaz DD, Crisóstomo FRP, Martín VS. Asymmetric synthesis of the (2S,4S,6S)-2,4,6-trimethylnonyl subunit of siphonarienes. Isr J Chem 2001. [DOI: 10.1560/y4cf-ym5a-n6fe-qbwf] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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34
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Arjona O, Menchaca R, Plumet J. Synthesis of the cyclohexan subunit of baconipyrones A and B from furan. Org Lett 2001; 3:107-9. [PMID: 11429849 DOI: 10.1021/ol000334t] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[figure: see text] The synthesis of the cyclohexan subunit of the siphonarlid metabolites baconipyrones A and B from furan is described. A key step included the alkylative ring opening of 7-oxanorbornenic sulfone 4 and oxidative desulfonylation of compound 8.
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Affiliation(s)
- O Arjona
- Departamento de Química Orgánica I, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain.
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Paterson I, Chen DY, Aceña JL, Franklin AS. Studies in marine polypropionate synthesis: total synthesis of (-)-baconipyrone C. Org Lett 2000; 2:1513-6. [PMID: 10841467 DOI: 10.1021/ol000027n] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction--see text] An asymmetric total synthesis of the unusual siphonariid metabolite, (-)-baconipyrone C (3), is described. Key steps included a tin(II)-mediated aldol coupling for the preparation of the carboxylic acid 17 and two different boron-mediated aldol additions leading to alcohol 8. Ester formation using modified Yamaguchi conditions gave 24, leading on PMB deprotection to (-)-baconipyrone C.
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Affiliation(s)
- I Paterson
- University Chemical Laboratory, Lensfield Road, Cambridge, UK.
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Yamamura S, Nishiyama S. Synthetic Studies on Polypropionate-Derived 4-Pyrone-Containing Marine Natural Products. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1997. [DOI: 10.1246/bcsj.70.2025] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kobayashi M, Higuchi K, Murakami N, Tajima H, Aoki S. Callystatin A, a potent cytotoxic polyketide from the marine sponge, Callyspongia truncata. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)00482-6] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dolabriferol: A new polypropionate from the skin of the anaspidean mollusc Dolabrifera dolabrifera. Tetrahedron 1996. [DOI: 10.1016/0040-4020(96)00764-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Assignment of the absolute configuration of the siphonarins and baconipyrones. Enantiocontrolled synthesis of a γ-pyrone subunit. Tetrahedron Lett 1994. [DOI: 10.1016/0040-4039(94)85043-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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A configurational model for siphonariid polypropionates derived from structural and biosynthetic considerations. Tetrahedron Lett 1994. [DOI: 10.1016/0040-4039(94)85044-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Paterson I, Perkins MV. Studies in polypropionate synthesis: stereoselective synthesis of (−)-denticulatins A and B. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)77719-7] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Morrow GW, Chen V, Swenton JS. Intramolecular cyclization of 2'-olepinic side-chains on anodically oxidized 4-phenylphenols. The effect of olefin substituents on carbon—carbon bond formation. Tetrahedron 1991. [DOI: 10.1016/s0040-4020(01)87055-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Synthetic studies on fully substituted γ-pyrone-containing natural products: synthesis of γ-pyrone derivatives obtained by decomposition of peroniatriols. Tetrahedron Lett 1990. [DOI: 10.1016/s0040-4039(00)97880-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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