1
|
Wenger LE, Shawver NM, Brennessel WW, Long BK, Hanusa TP. Heteroleptic Aluminum Allyls as Initiators for Lactide Polymerization. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lauren E. Wenger
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee37235, United States
| | - Nicholas M. Shawver
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee37996-1600, United States
| | - William W. Brennessel
- X-ray Crystallographic Facility, Department of Chemistry, University of Rochester, Rochester, New York14627, United States
| | - Brian K. Long
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee37996-1600, United States
| | - Timothy P. Hanusa
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee37235, United States
| |
Collapse
|
2
|
León EI, Martín Á, Montes AS, Pérez-Martín I, Del Sol Rodríguez M, Suárez E. 1,5-Hydrogen Atom Transfer/Surzur-Tanner Rearrangement: A Radical Cascade Approach for the Synthesis of 1,6-Dioxaspiro[4.5]decane and 6,8-Dioxabicyclo[3.2.1]octane Scaffolds in Carbohydrate Systems. J Org Chem 2021; 86:14508-14552. [PMID: 34554734 PMCID: PMC8576821 DOI: 10.1021/acs.joc.1c01376] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
![]()
The 1,5-HAT–1,2-(ester)alkyl
radical migration (Surzur–Tanner
rearrangement) radical/polar sequence triggered by alkoxyl radicals
has been studied on a series of C-glycosyl substrates
with 3-C-(α,β-d,l-glycopyranosyl)1-propanol
and C-(α-d,l-glycopyranosyl)methanol
structures prepared from chiral pool d- and l-sugar.
The use of acetoxy and diphenoxyphosphatoxy as leaving groups provides
an efficient construction of 10-deoxy-1,6-dioxaspiro[4.5]decane and
4-deoxy-6,8-dioxabicyclo[3.2.1]octane frameworks. The alkoxyl radicals
were generated by the reaction of the corresponding N-alkoxyphthalimides with group 14 hydrides [n-Bu3SnH(D) and (TMS)3SiH], and in comparative terms,
the reaction was also initiated by visible light photocatalysis using
the Hantzsch ester/fac-Ir(ppy)3 procedure.
Special attention was devoted to the influence of the relative stereochemistry
of the centers involved in the radical sequence on the reaction outcome.
The addition of BF3•Et2O as a catalyst
to the radical sequence resulted in a significant increase in the
yields of the desired bicyclic ketals.
Collapse
Affiliation(s)
- Elisa I León
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Ángeles Martín
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Adrián S Montes
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain.,Doctoral and Postgraduate School, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez s/n, 38200 La Laguna, Tenerife, Spain
| | - Inés Pérez-Martín
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - María Del Sol Rodríguez
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Ernesto Suárez
- Síntesis de Productos Naturales, Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| |
Collapse
|
3
|
Nocquet PA, Macé A, Legros F, Lebreton J, Dujardin G, Collet S, Martel A, Carboni B, Carreaux F. Stereodivergent approach in the protected glycal synthesis of L-vancosamine, L-saccharosamine, L-daunosamine and L-ristosamine involving a ring-closing metathesis step. Beilstein J Org Chem 2018; 14:2949-2955. [PMID: 30546479 PMCID: PMC6278755 DOI: 10.3762/bjoc.14.274] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 11/15/2018] [Indexed: 11/23/2022] Open
Abstract
In this paper, a new access to several chiral 3-aminoglycals as potential precursors for glycosylated natural products is reported from a common starting material, (-)-methyl-L-lactate. The stereodivergent strategy is based on the implementation of a ring-closing metathesis of vinyl ethers as key step of reaction sequences developed.
Collapse
Affiliation(s)
- Pierre-Antoine Nocquet
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 263 avenue du Général Leclerc, Campus de Beaulieu, F-35000 Rennes, France
| | - Aurélie Macé
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 263 avenue du Général Leclerc, Campus de Beaulieu, F-35000 Rennes, France
| | - Frédéric Legros
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS-Université du Maine, avenue Olivier Messiaen, 72085 Cedex Le Mans, France
| | - Jacques Lebreton
- Chimie Et Interdisciplinarité: Synthèse, Analyse, Modélisation (CEISAM), UMR 6230 CNRS-Université de Nantes, 2 chemin de la Houssinière, 44322 Cedex Nantes, France
| | - Gilles Dujardin
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS-Université du Maine, avenue Olivier Messiaen, 72085 Cedex Le Mans, France
| | - Sylvain Collet
- Chimie Et Interdisciplinarité: Synthèse, Analyse, Modélisation (CEISAM), UMR 6230 CNRS-Université de Nantes, 2 chemin de la Houssinière, 44322 Cedex Nantes, France
| | - Arnaud Martel
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS-Université du Maine, avenue Olivier Messiaen, 72085 Cedex Le Mans, France
| | - Bertrand Carboni
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 263 avenue du Général Leclerc, Campus de Beaulieu, F-35000 Rennes, France
| | - François Carreaux
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 263 avenue du Général Leclerc, Campus de Beaulieu, F-35000 Rennes, France
| |
Collapse
|
4
|
Synthetic efforts towards the stereoselective synthesis of NF00659B 1. Bioorg Med Chem Lett 2018; 28:2746-2750. [PMID: 29503022 DOI: 10.1016/j.bmcl.2018.02.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 02/18/2018] [Indexed: 11/21/2022]
Abstract
NF00659B1 is a novel α-pyrone diterpenoid natural product with potent anti-colon cancer activity. A stereoselective approach to the 2,2-dimethyl oxepanol core of NF00659B1 is described enlisting a sequence of olefinic ester ring-closing metathesis, epoxidation, and Grignard addition. This strategy paves the way to a total synthesis of NF00659B1 for further biological studies.
Collapse
|
5
|
Desimoni G, Faita G, Quadrelli P. Forty Years after “Heterodiene Syntheses with α,β-Unsaturated Carbonyl Compounds”: Enantioselective Syntheses of 3,4-Dihydropyran Derivatives. Chem Rev 2018; 118:2080-2248. [DOI: 10.1021/acs.chemrev.7b00322] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giovanni Desimoni
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Giuseppe Faita
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Paolo Quadrelli
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| |
Collapse
|
6
|
Affiliation(s)
- You Yang
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Biao Yu
- State
Key Laboratory of Bio-organic and Natural Products Chemistry, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| |
Collapse
|
7
|
Zhang S, Ullah A, Yamamoto Y, Bao M. Palladium-Catalyzed Regioselective Allylation of Chloromethyl(hetero)arenes with Allyl Pinacolborate. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700350] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sheng Zhang
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 People's Republic of China
| | - Aziz Ullah
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 People's Republic of China
| | - Yoshinori Yamamoto
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 People's Republic of China
- WPI-AIMR (WPI-Advanced Institute for Materials Research); Tohoku University; Sendai 980-8577 Japan
| | - Ming Bao
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 People's Republic of China
| |
Collapse
|
8
|
Fuwa H, Sasaki M. Exploiting Ruthenium Carbene-Catalyzed Reactions in Total Synthesis of Marine Oxacyclic Natural Products. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160224] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
9
|
Rightmire NR, Bruns DL, Hanusa TP, Brennessel WW. Mechanochemical Influence on the Stereoselectivity of Halide Metathesis: Synthesis of Group 15 Tris(allyl) Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00151] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicholas R. Rightmire
- Department
of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - David L. Bruns
- Department
of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Timothy P. Hanusa
- Department
of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - William W. Brennessel
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| |
Collapse
|
10
|
Affiliation(s)
- Kylie A. Agnew‐Francis
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane, Queensland Australia 4072
| | - Craig M. Williams
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane, Queensland Australia 4072
| |
Collapse
|
11
|
Jacques R, Pal R, Parker NA, Sear CE, Smith PW, Ribaucourt A, Hodgson DM. Recent applications in natural product synthesis of dihydrofuran and -pyran formation by ring-closing alkene metathesis. Org Biomol Chem 2016; 14:5875-93. [DOI: 10.1039/c6ob00593d] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Examples from 2003 to 2015 of ring-closing alkene metathesis (RCM) in the generation of dihydro-furans or -pyrans for natural product synthesis, are reviewed.
Collapse
Affiliation(s)
- Reece Jacques
- Department of Chemistry
- Chemistry Research Laboratory
- University of Oxford
- Oxford
- UK
| | - Ritashree Pal
- Department of Chemistry
- Chemistry Research Laboratory
- University of Oxford
- Oxford
- UK
| | - Nicholas A. Parker
- Department of Chemistry
- Chemistry Research Laboratory
- University of Oxford
- Oxford
- UK
| | - Claire E. Sear
- Department of Chemistry
- Chemistry Research Laboratory
- University of Oxford
- Oxford
- UK
| | - Peter W. Smith
- Department of Chemistry
- Chemistry Research Laboratory
- University of Oxford
- Oxford
- UK
| | - Aubert Ribaucourt
- Department of Chemistry
- Chemistry Research Laboratory
- University of Oxford
- Oxford
- UK
| | - David M. Hodgson
- Department of Chemistry
- Chemistry Research Laboratory
- University of Oxford
- Oxford
- UK
| |
Collapse
|
12
|
Fuwa H, Fukazawa R, Sasaki M. Concise synthesis of the A/BCD-ring fragment of gambieric acid A. Front Chem 2015; 2:116. [PMID: 25629027 PMCID: PMC4292782 DOI: 10.3389/fchem.2014.00116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 12/18/2014] [Indexed: 11/17/2022] Open
Abstract
Gambieric acid A (GAA) and its congeners belong to the family of marine polycyclic ether natural products. Their highly complex molecular architecture and unique biological activities have been of intense interest within the synthetic community. We have previously reported the first total synthesis, stereochemical reassignment, and preliminary structure–activity relationships of GAA. Here we disclose a concise synthesis of the A/BCD-ring fragment of GAA. The synthesis started from our previously reported synthetic intermediate that represents the A/B-ring. The C-ring was synthesized via an oxiranyl anion coupling and a 6-endo cyclization, and the D-ring was forged by means of an oxidative lactonization and subsequent palladium-catalyzed functionalization of the lactone ring. In this manner, the number of linear synthetic steps required for the construction of the C- and D-rings was reduced from 22 to 11.
Collapse
Affiliation(s)
- Haruhiko Fuwa
- Graduate School of Life Sciences, Tohoku University Sendai, Japan
| | - Ryo Fukazawa
- Graduate School of Life Sciences, Tohoku University Sendai, Japan
| | - Makoto Sasaki
- Graduate School of Life Sciences, Tohoku University Sendai, Japan
| |
Collapse
|
13
|
Heravi MM, Ahmadi T, Ghavidel M, Heidari B, Hamidi H. Recent applications of the hetero Diels–Alder reaction in the total synthesis of natural products. RSC Adv 2015. [DOI: 10.1039/c5ra17488k] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The synthetic utility and potential power of the Diels–Alder (D–A) reaction in organic chemistry is evident.
Collapse
Affiliation(s)
| | | | | | | | - Hoda Hamidi
- Department of Chemistry
- Alzahra University
- Tehran
- Iran
| |
Collapse
|
14
|
Nishida Y, Hosokawa N, Murai M, Takai K. Isolation and Structural Characterization of Geminal Di(iodozincio)methane Complexes Stabilized with Nitrogen Ligands. J Am Chem Soc 2014; 137:114-7. [DOI: 10.1021/ja5114535] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yusuke Nishida
- Division of Chemistry and Biotechnology, Graduate School of Natural
Science and Technology and ‡Research Center of New Functional Materials for Energy
Production, Storage, and Transport, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Naoki Hosokawa
- Division of Chemistry and Biotechnology, Graduate School of Natural
Science and Technology and ‡Research Center of New Functional Materials for Energy
Production, Storage, and Transport, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Masahito Murai
- Division of Chemistry and Biotechnology, Graduate School of Natural
Science and Technology and ‡Research Center of New Functional Materials for Energy
Production, Storage, and Transport, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Kazuhiko Takai
- Division of Chemistry and Biotechnology, Graduate School of Natural
Science and Technology and ‡Research Center of New Functional Materials for Energy
Production, Storage, and Transport, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| |
Collapse
|
15
|
Rightmire NR, Hanusa TP, Rheingold AL. Mechanochemical Synthesis of [1,3-(SiMe3)2C3H3]3(Al,Sc), a Base-Free Tris(allyl)aluminum Complex and Its Scandium Analogue. Organometallics 2014. [DOI: 10.1021/om5009204] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | | | - Arnold L. Rheingold
- Department
of Chemistry, University of California, San Diego, La Jolla, California 92093, United States
| |
Collapse
|
16
|
Sasaki M, Fuwa H. Total synthesis and complete structural assignment of gambieric acid A, a large polycyclic ether marine natural product. CHEM REC 2014; 14:678-703. [PMID: 25092231 DOI: 10.1002/tcr.201402052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Indexed: 12/30/2022]
Abstract
More than thirty years after the discovery of polycyclic ether marine natural products, they continue to receive intense attention from the chemical, biological, and pharmacological communities because of their potent biological activities and highly complex molecular architectures. Gambieric acids are intriguing polycyclic ethers that exhibit potent antifungal activity with minimal toxicity against mammals. Despite the recent advances in the synthesis of this class of natural products, gambieric acids remain unconquered due to their daunting structural complexity, which poses a formidable synthetic challenge to organic chemists. This paper reviews our long-term studies on the total synthesis, complete configurational reassignment, and structure-activity relationships of gambieric acid A over the last decade.
Collapse
Affiliation(s)
- Makoto Sasaki
- Graduate School of Life Sciences, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan.
| | | |
Collapse
|
17
|
Fustero S, Simón-Fuentes A, Barrio P, Haufe G. Olefin Metathesis Reactions with Fluorinated Substrates, Catalysts, and Solvents. Chem Rev 2014; 115:871-930. [DOI: 10.1021/cr500182a] [Citation(s) in RCA: 142] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Santos Fustero
- Departamento
de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
- Laboratorio
de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, E-46012 Valencia, Spain
| | | | - Pablo Barrio
- Departamento
de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, Spain
| | - Günter Haufe
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, D-48149 Münster, Germany
| |
Collapse
|
18
|
Parkan K, Pohl R, Kotora M. Cross-Coupling Reaction of Saccharide-Based Alkenyl Boronic Acids with Aryl Halides: The Synthesis of Bergenin. Chemistry 2014; 20:4414-9. [DOI: 10.1002/chem.201304304] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Indexed: 11/09/2022]
|
19
|
Ishigai K, Fuwa H, Hashizume K, Fukazawa R, Cho Y, Yotsu-Yamashita M, Sasaki M. Total synthesis and biological evaluation of (+)-gambieric acid A and its analogues. Chemistry 2013; 19:5276-88. [PMID: 23554126 DOI: 10.1002/chem.201204303] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 02/09/2013] [Indexed: 11/06/2022]
Abstract
In this study, we report the first total synthesis and complete stereostructure of gambieric acid A, a potent antifungal polycyclic ether metabolite, in detail. The A/B-ring exocyclic enol ether 32 was prepared through a Suzuki-Miyaura coupling of the B-ring vinyl iodide 18 and the alkylborate 33 and subsequent closure of the A-ring by using diastereoselective bromoetherification as the key transformation. Suzuki-Miyaura coupling of 32 with acetate-derived enol phosphate 49, followed by ring-closing metathesis of the derived diene, produced the D-ring. Subsequent closure of the C-ring through a mixed thioacetalization completed the synthesis of the A/BCD-ring fragment 8. The A/BCD- and F'GHIJ-ring fragments (i.e., 8 and 9) were assembled through Suzuki-Miyaura coupling. The C25 stereogenic center was elaborated by exploiting the intrinsic conformational property of the seven-membered F'-ring. After the oxidative cleavage of the F'-ring, the E-ring was formed as a cyclic mixed thioacetal (i.e., 70) and then stereoselectively allylated by using glycosylation chemistry. Ring-closing metathesis of the diene 3 thus obtained closed the F-ring and completed the polycyclic ether skeleton. Finally, the J-ring side chain was introduced by using a Julia-Kocienski olefination in the presence of CeCl3 to complete the total synthesis of gambieric acid A (1), thereby unambiguously establishing its complete stereostructure. The present total synthesis enabled us to evaluate the antifungal and antiproliferative activities of 1 and several synthetic analogues.
Collapse
Affiliation(s)
- Kazuya Ishigai
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | | | | | | | | | | | | |
Collapse
|
20
|
Koester DC, Kriemen E, Werz DB. Flexible Synthesis of 2-Deoxy-C-Glycosides and (1→2)-, (1→3)-, and (1→4)-LinkedC-Glycosides. Angew Chem Int Ed Engl 2013; 52:2985-9. [DOI: 10.1002/anie.201209697] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Indexed: 11/07/2022]
|
21
|
Koester DC, Kriemen E, Werz DB. Flexible Synthese von 2-Desoxy-C-Glycosiden sowie (1→2)-, (1→3)- und (1→4)-verknüpftenC-Glycosiden. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209697] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
22
|
Gallardo-Rodríguez J, Sánchez-Mirón A, García-Camacho F, López-Rosales L, Chisti Y, Molina-Grima E. Bioactives from microalgal dinoflagellates. Biotechnol Adv 2012; 30:1673-84. [PMID: 22884890 DOI: 10.1016/j.biotechadv.2012.07.005] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 07/27/2012] [Accepted: 07/29/2012] [Indexed: 01/12/2023]
Abstract
Dinoflagellate microalgae are an important source of marine biotoxins. Bioactives from dinoflagellates are attracting increasing attention because of their impact on the safety of seafood and potential uses in biomedical, toxicological and pharmacological research. Here we review the potential applications of dinoflagellate toxins and the methods for producing them. Only sparing quantities of dinoflagellate toxins are generally available and this hinders bioactivity characterization and evaluation in possible applications. Approaches to production of increased quantities of dinoflagellate bioactives are discussed. Although many dinoflagellates are fragile and grow slowly, controlled culture in bioreactors appears to be generally suitable for producing many of the metabolites of interest.
Collapse
|
23
|
Himanen JA, Pihko PM. Synthesis of Trisaccharides by Hetero-Diels-Alder Welding of Two Monosaccharide Units. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200277] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
24
|
Koester DC, Werz DB. Sonogashira-Hagihara reactions of halogenated glycals. Beilstein J Org Chem 2012; 8:675-82. [PMID: 23015813 PMCID: PMC3388853 DOI: 10.3762/bjoc.8.75] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Accepted: 04/04/2012] [Indexed: 12/16/2022] Open
Abstract
Herein, we report on our findings of the Sonogashira-Hagihara reaction with 1-iodinated and 2-brominated glycals using several aromatic and aliphatic alkynes. This Pd-catalyzed cross-coupling reaction presents a facile access to alkynyl C-glycosides and sets the stage for a reductive/oxidative refunctionalization of the enyne moiety to regenerate either C-glycosidic structures or pyran derivatives with a substituent in position 2.
Collapse
Affiliation(s)
- Dennis C Koester
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstr. 2, 37077 Göttingen, Germany
| | - Daniel B Werz
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstr. 2, 37077 Göttingen, Germany
| |
Collapse
|
25
|
Alonso E, Fuwa H, Vale C, Suga Y, Goto T, Konno Y, Sasaki M, LaFerla FM, Vieytes MR, Giménez-Llort L, Botana LM. Design and synthesis of skeletal analogues of gambierol: attenuation of amyloid-β and tau pathology with voltage-gated potassium channel and N-methyl-D-aspartate receptor implications. J Am Chem Soc 2012; 134:7467-79. [PMID: 22475455 DOI: 10.1021/ja300565t] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Gambierol is a potent neurotoxin that belongs to the family of marine polycyclic ether natural products and primarily targets voltage-gated potassium channels (K(v) channels) in excitable membranes. Previous work in the chemistry of marine polycyclic ethers has suggested the critical importance of the full length of polycyclic ether skeleton for potent biological activity. Although we have previously investigated structure-activity relationships (SARs) of the peripheral functionalities of gambierol, it remained unclear whether the whole polycyclic ether skeleton is needed for its cellular activity. In this work, we designed and synthesized two truncated skeletal analogues of gambierol comprising the EFGH- and BCDEFGH-rings of the parent compound, both of which surprisingly showed similar potency to gambierol on voltage-gated potassium channels (K(v)) inhibition. Moreover, we examined the effect of these compounds in an in vitro model of Alzheimer's disease (AD) obtained from triple transgenic (3xTg-AD) mice, which expresses amyloid beta (Aβ) accumulation and tau hyperphosphorylation. In vitro preincubation of the cells with the compounds resulted in significant inhibition of K(+) currents, a reduction in the extra- and intracellular levels of Aβ, and a decrease in the levels of hyperphosphorylated tau. In addition, pretreatment with these compounds reduced the steady-state level of the N-methyl-D-aspartate (NMDA) receptor subunit 2A without affecting the 2B subunit. The involvement of glutamate receptors was further suggested by the blockage of the effect of gambierol on tau hyperphosphorylation by glutamate receptor antagonists. The present study constitutes the first discovery of skeletally simplified, designed polycyclic ethers with potent cellular activity and demonstrates the utility of gambierol and its synthetic analogues as chemical probes for understanding the function of K(v) channels as well as the molecular mechanism of Aβ metabolism modulated by NMDA receptors.
Collapse
Affiliation(s)
- Eva Alonso
- Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, Spain
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
|
27
|
|
28
|
Onorato A, Pavlik C, Invernale MA, Berghorn ID, Sotzing GA, Morton MD, Smith MB. Polymer-mediated cyclodehydration of alditols and ketohexoses. Carbohydr Res 2011; 346:1662-70. [DOI: 10.1016/j.carres.2011.04.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Revised: 04/07/2011] [Accepted: 04/11/2011] [Indexed: 10/18/2022]
|
29
|
Kotha S, Krishna NG, Halder S, Misra S. A synergistic approach to polycyclics via a strategic utilization of Claisen rearrangement and olefin metathesis. Org Biomol Chem 2011; 9:5597-624. [PMID: 21727970 DOI: 10.1039/c1ob05413a] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Olefin metathesis promoted by a well-defined metal carbene complex has evolved into an efficient method for the construction of a broad range of carbocyclic and heterocyclic rings of varying size. The synthetic potential of the olefin metathesis has been further increased by combining various other C-C bond forming processes either in tandem or in sequence. Herein, application of Claisen rearrangement and olefin metathesis to prepare various intricate and/or biologically important targets has been described.
Collapse
Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai, India.
| | | | | | | |
Collapse
|
30
|
Abstract
We have discovered a photocatalytic intramolecular hetero-Diels-Alder reaction of tethered bis(enones). This transformation involves the intermediacy of an enone radical anion and constitutes the formal coupling of an electron-deficient heterodiene with an electronically mismatched enone dienophile. The diastereoselectivity and regioselectivity of the process are high, and the dihydropyran products are amenable to a variety of synthetically useful transformations.
Collapse
|
31
|
Affiliation(s)
- Joëlle Prunet
- WestCHEM, Department of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, UK, Fax: +44‐141‐330‐4888
| |
Collapse
|
32
|
Abstract
Maitotoxin holds a special place in the annals of natural products chemistry as the largest and most toxic secondary metabolite known to date. Its fascinating, ladder-like, polyether molecular structure and diverse spectrum of biological activities elicited keen interest from chemists and biologists who recognized its uniqueness and potential as a probe and inspiration for research in chemistry and biology. Synthetic studies in the area benefited from methodologies and strategies that were developed as part of chemical synthesis programs directed toward the total synthesis of some of the less complex members of the polyether marine biotoxin class, of which maitotoxin is the flagship. This account focuses on progress made in the authors' laboratories in the synthesis of large maitotoxin domains with emphasis on methodology development, strategy design, and structural comparisons of the synthesized molecules with the corresponding regions of the natural product. The article concludes with an overview of maitotoxin's biological profile and future perspectives.
Collapse
Affiliation(s)
- K. C. Nicolaou
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037 (USA), Fax: (+1) 858-784-2469, and Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093 (USA)
| | - Robert J. Aversa
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037 (USA), Fax: (+1) 858-784-2469, and Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093 (USA)
| |
Collapse
|
33
|
Abstract
This Article describes the total synthesis of the marine ladder toxin brevenal utilizing a convergent synthetic strategy. Critical to the success of this work was the use of olefinic-ester cyclization reactions and the utilization of glycal epoxides as precursors to C-C and C-H bonds.
Collapse
Affiliation(s)
- Yuan Zhang
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, USA
| | | | | | | | | |
Collapse
|
34
|
Nicolaou KC, Baker TM, Nakamura T. Synthesis of the WXYZA' domain of maitotoxin. J Am Chem Soc 2010; 133:220-6. [PMID: 21166430 DOI: 10.1021/ja109533y] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A synthesis of the WXYZA' domain (7) of the marine neurotoxin maitotoxin (1) is reported. The convergent synthetic strategy involves construction of key building blocks 11 and 12, their coupling, and the elaboration of the resulting ester (10) to the target molecule through a ring-closing metathesis and a hydroxy dithioketal cyclization as the key steps. For the construction of fragment 11, the Noyori reduction/Achmatowicz rearrangement and hydroxy epoxide opening technologies were applied (starting from furfuryl alcohol (13)), whereas for the synthesis of fragment 12, a carbohydrate-based approach was adopted (starting from 2-deoxy-D-ribose (14)). The synthesized WXYZA' domain (7) of maitotoxin (1) exhibited the expected (13)C NMR chemical shifts, supporting the originally assigned structure of the corresponding region of the natural product.
Collapse
Affiliation(s)
- K C Nicolaou
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States.
| | | | | |
Collapse
|
35
|
Lichtenberg C, Robert D, Spaniol TP, Okuda J. Bis(allyl)aluminum Cation, Tris(allyl)aluminum, and Tetrakis(allyl)aluminate: Synthesis, Characterization, and Reactivity. Organometallics 2010. [DOI: 10.1021/om100809h] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Crispin Lichtenberg
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Dominique Robert
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Thomas P. Spaniol
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| |
Collapse
|
36
|
Koester DC, Leibeling M, Neufeld R, Werz DB. A Pd-Catalyzed Approach to (1→6)-Linked C-Glycosides. Org Lett 2010; 12:3934-7. [DOI: 10.1021/ol101625p] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dennis C. Koester
- Institut für Organische und Biomolekulare Chemie der Georg-August-Universität Göttingen, Tammannstr. 2, D-37077 Göttingen, Germany
| | - Markus Leibeling
- Institut für Organische und Biomolekulare Chemie der Georg-August-Universität Göttingen, Tammannstr. 2, D-37077 Göttingen, Germany
| | - Roman Neufeld
- Institut für Organische und Biomolekulare Chemie der Georg-August-Universität Göttingen, Tammannstr. 2, D-37077 Göttingen, Germany
| | - Daniel B. Werz
- Institut für Organische und Biomolekulare Chemie der Georg-August-Universität Göttingen, Tammannstr. 2, D-37077 Göttingen, Germany
| |
Collapse
|
37
|
Furuta H, Hasegawa Y, Hase M, Mori Y. Total Synthesis of Gambierol by Using Oxiranyl Anions. Chemistry 2010; 16:7586-95. [DOI: 10.1002/chem.201000497] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
38
|
|
39
|
Isobe M, Hamajima A. Ciguatoxin: developing the methodology for total synthesis. Nat Prod Rep 2010; 27:1204-26. [DOI: 10.1039/b919467n] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
40
|
Abstract
The total synthesis of gambierol has been achieved utilizing an oxiranyl anion strategy in an iterative manner. Synthetic highlights of this route include direct carbon-carbon formation on epoxides, sulfonyl-assisted 6-endo cyclization, and expansion reaction of tetrahydropyranyl rings to oxepanes to forge the polycyclic architecture of the target molecule.
Collapse
Affiliation(s)
- Hiroki Furuta
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku, Nagoya 468-8503, Japan
| | | | | |
Collapse
|
41
|
Maemoto M, Kimishima A, Nakata T. Stereoselective Synthesis of 2,6-syn-Dimethyl-tetrahydropyran Derivatives, Important Segments of Marine Polycyclic Ethers, by Unique Insertion of the Methyl Group. Org Lett 2009; 11:4814-7. [DOI: 10.1021/ol9018419] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michihiro Maemoto
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Atsushi Kimishima
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Tadashi Nakata
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| |
Collapse
|
42
|
|
43
|
Abstract
The last one hundred years have witnessed a dramatic increase in the power and reach of total synthesis. The pantheon of accomplishments in the field includes the total synthesis of molecules of unimaginable beauty and diversity such as the four discussed in this article: endiandric acids (1982), calicheamicin gamma(1)(I) (1992), Taxol (1994), and brevetoxin B (1995). Chosen from the collection of the molecules synthesized in the author's laboratories, these structures are but a small fraction of the myriad constructed in laboratories around the world over the last century. Their stories, and the background on which they were based, should serve to trace the evolution of the art of chemical synthesis to its present sharp condition, an emergence that occurred as a result of new theories and mechanistic insights, new reactions, new reagents and catalysts, and new synthetic technologies and strategies. Indeed, the advent of chemical synthesis as a whole must be considered as one of the most influential developments of the twentieth century in terms of its impact on society.
Collapse
Affiliation(s)
- K C Nicolaou
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.
| |
Collapse
|
44
|
Ceccon J, Danoun G, Greene AE, Poisson JF. Asymmetric synthesis of (+)-castanospermine through enol ether metathesis–hydroboration/oxidation. Org Biomol Chem 2009; 7:2029-31. [DOI: 10.1039/b901488h] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
45
|
Zhang Y, Rainier JD. Two-directional olefinic-ester ring-closing metathesis using reduced Ti alkylidenes. A rapid entry into polycyclic ether skeletons. Org Lett 2009; 11:237-9. [PMID: 19046048 DOI: 10.1021/ol8025439] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The use of a reduced titanium ethylidene reagent in an efficient two-directional approach to polycyclic ether skeletons is described.
Collapse
Affiliation(s)
- Yuan Zhang
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, USA
| | | |
Collapse
|
46
|
C. Majumdar K, Muhuri S, Ul Islam R, Chattopadhyay B. Synthesis of Five- and Six-Membered Heterocyclic Compounds by the Application of the Metathesis Reactions. HETEROCYCLES 2009. [DOI: 10.3987/rev-08-646] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
47
|
Saito T, Nakata T. Stereoselective Synthesis of trans-Fused 7,6,6,7-Membered Tetracyclic Ether, Corresponding to the EFGH-Ring of Gambierol and the BCDE-Ring of Gambieric Acids. Org Lett 2008; 11:113-6. [DOI: 10.1021/ol8024555] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tatsuo Saito
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Tadashi Nakata
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| |
Collapse
|
48
|
Osei Akoto C, Rainier J. Harnessing Glycal-Epoxide Rearrangements: The Generation of the AB, EF, and IJ Rings of Adriatoxin. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200803791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
49
|
Nicolaou K, Frederick M, Aversa R. Die Entdeckung und Synthese von marinen Polyethern. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200801696] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
50
|
Martín A, Pérez-Martín I, Quintanal LM, Suárez E. Stereoselective synthesis of C-ketosides by sequential intramolecular hydrogen atom transfer–intermolecular allylation reaction. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.06.070] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|