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Yang P, Li J, Sun L, Yao M, Zhang X, Xiao WL, Wang JH, Tian P, Sun HD, Puno PT, Li A. Elucidation of the Structure of Pseudorubriflordilactone B by Chemical Synthesis. J Am Chem Soc 2019; 142:13701-13708. [PMID: 31707779 DOI: 10.1021/jacs.9b09699] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Peng Yang
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450052, China
| | - Jian Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Li Sun
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Ming Yao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xiang Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Wei-Lie Xiao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jian-Hua Wang
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Ping Tian
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Pema-Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Ang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450052, China
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2
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Suzuki A, Sasaki M, Nakagishi T, Ueda T, Hoshiya N, Uenishi J. Construction of Iterative Tetrahydrofuran Ring Units and Total Synthesis of (+)-Goniocin. Org Lett 2016; 18:2248-51. [PMID: 27111729 DOI: 10.1021/acs.orglett.6b00877] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cytotoxic acetogenin (+)-goniocin has been synthesized in 17 steps from (R)-O-tritylglycidol. The core structure of the contiguous C22-C10 threo-trans-threo-trans-threo-trans-tris-tetrahydrofuran (THF) ring involving an iterative THF-ring unit was synthesized. An iterative THF ring unit was constructed from an alkenyl-substituted THF ring in four steps including a Pd(II)-catalyzed ring-closing reaction and cross-metathesis. This method is general and allows the preparation of both trans-threo-trans- and trans-threo-cis-THF ring units flexibly.
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Affiliation(s)
- Ai Suzuki
- Kyoto Pharmaceutical University , Yamashina, Kyoto 607-8412, Japan
| | - Mai Sasaki
- Kyoto Pharmaceutical University , Yamashina, Kyoto 607-8412, Japan
| | | | - Tsuyoshi Ueda
- Kyoto Pharmaceutical University , Yamashina, Kyoto 607-8412, Japan
| | - Naoyuki Hoshiya
- Kyoto Pharmaceutical University , Yamashina, Kyoto 607-8412, Japan
| | - Jun'ichi Uenishi
- Kyoto Pharmaceutical University , Yamashina, Kyoto 607-8412, Japan
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3
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Martínez A, Gándara Z, González M, Gómez G, Fall Y. Synthesis of new calcitriol analogues with an oxolane moiety in their side chains. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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4
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Ellis JM, Crimmins MT. Strategies for the total synthesis of C2-C11 cyclized cembranoids. Chem Rev 2009; 108:5278-98. [PMID: 18942794 DOI: 10.1021/cr078117u] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J Michael Ellis
- Department of Chemistry, Venable and Kenan Laboratories of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, USA
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5
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Chakraborty TK, Koley D, Ravi R, Krishnakumari V, Nagaraj R, Chand Kunwar A. Synthesis, Conformational Analysis and Biological Studies of Cyclic Cationic Antimicrobial Peptides Containing Sugar Amino Acids. J Org Chem 2008; 73:8731-44. [DOI: 10.1021/jo801123q] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Tushar Kanti Chakraborty
- Indian Institute of Chemical Technology and Centre for Cellular and Molecular Biology, Hyderabad 500607, India
| | - Dipankar Koley
- Indian Institute of Chemical Technology and Centre for Cellular and Molecular Biology, Hyderabad 500607, India
| | - Rapolu Ravi
- Indian Institute of Chemical Technology and Centre for Cellular and Molecular Biology, Hyderabad 500607, India
| | - Viswanatha Krishnakumari
- Indian Institute of Chemical Technology and Centre for Cellular and Molecular Biology, Hyderabad 500607, India
| | - Ramakrishnan Nagaraj
- Indian Institute of Chemical Technology and Centre for Cellular and Molecular Biology, Hyderabad 500607, India
| | - Ajit Chand Kunwar
- Indian Institute of Chemical Technology and Centre for Cellular and Molecular Biology, Hyderabad 500607, India
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6
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Mertz E, Tinsley JM, Roush WR. [3 + 2]-Annulation Reactions of Chiral Allylsilanes and Chiral Aldehydes. Studies on the Synthesis of Bis-tetrahydrofuran Substructures of Annonaceous Acetogenins. J Org Chem 2005; 70:8035-46. [PMID: 16277325 DOI: 10.1021/jo0511290] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[Structure: See text] Double asymmetric [3 + 2]-annulation reactions of chiral beta-silyloxyallylsilanes with chiral 2-tetrahydrofuranyl carboxaldehydes have been studied, leading to the stereocontrolled synthesis of six diastereomeric bis-tetrahydrofuran structures corresponding to the core subunits of members of the Annonaceous acetogenin family of natural products. Transition-state models are proposed to account for the stereoselectivity of the double-stereodifferentiating [3 + 2]-annulation reactions.
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Affiliation(s)
- Eric Mertz
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, USA
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7
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Conformational studies of 3,4-dideoxy furanoid sugar amino acid containing analogs of the receptor binding inhibitor of vasoactive intestinal peptide. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.07.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Jalce G, Seck M, Franck X, Hocquemiller R, Figadère B. Highly diastereoselective synthesis of trans-2,5-disubstituted tetrahydrofurans. J Org Chem 2004; 69:3240-1. [PMID: 15104476 DOI: 10.1021/jo035811a] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
trans-2,5-Disubstituted tetrahydrofurans were obtained as major diastereomers (trans/cis ratio 90:10-100:0) when acetylated gamma-lactols derived from (S)-glutamic acid were treated with titanium enolates of N-acetyl (R)-oxazolidin-2-thiones. A simple transesterification allowed us to obtain the corresponding methyl esters and recover the chiral auxiliary.
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Affiliation(s)
- Gaël Jalce
- Laboratoire de Pharmacognosie, associé au CNRS (BioCIS), Université Paris-Sud, Faculté de Pharmacie, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry, France
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9
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Maezaki N, Kojima N, Tominaga H, Yanai M, Tanaka T. Systematic synthesis of Bis-THF ring cores in annonaceous acetogenins. Org Lett 2003; 5:1411-4. [PMID: 12713286 DOI: 10.1021/ol034131r] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Systematic synthesis of bis-THF ring cores, synthetic intermediates of adjacent bis-THF annonaceous acetogenins, has been achieved by asymmetric alkynylation and subsequent stereodivergent THF ring formation. The asymmetric alkynylation of alpha-tetrahydrofuranic aldehyde with (S)-3-butyne-1,2-diol derivatives gave good yields of erythro- and threo-adducts with very high diastereoselectivity. These adducts were converted into four types of bis-THF cores via two kinds of one-pot THF ring formation. [reaction: see text]
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Affiliation(s)
- Naoyoshi Maezaki
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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10
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Maezaki N, Kojima N, Asai M, Tominaga H, Tanaka T. Highly stereoselective and stereodivergent synthesis of four types of THF cores in acetogenins using a C4-chiral building block. Org Lett 2002; 4:2977-80. [PMID: 12182603 DOI: 10.1021/ol026393j] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Four stereoisomers of the THF cores, synthetic intermediates of acetogenins, have been synthesized with high diastereoselectivity by asymmetric alkynylation and subsequent stereodivergent THF ring formation. The asymmetric alkynylation of alpha-oxyaldehyde with (S)-3-butyne-1,2-diol derivatives (C4-unit) gave good yields of syn and anti adducts with >97:3 dr and 94:6 dr, respectively. These adducts were converted into the four types of THF compounds via one-pot THF formation or via intramolecular Williamson synthesis.
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Affiliation(s)
- Naoyoshi Maezaki
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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11
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Bernardelli P, Moradei OM, Friedrich D, Yang J, Gallou F, Dyck BP, Doskotch RW, Lange T, Paquette LA. Total asymmetric synthesis of the putative structure of the cytotoxic diterpenoid (-)-sclerophytin a and of the authentic natural sclerophytins A and B. J Am Chem Soc 2001; 123:9021-32. [PMID: 11552810 DOI: 10.1021/ja011285y] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An enantioselective synthetic route to the thermodynamically most stable diastereomer of the structure assigned to sclerophytin A (5) has been realized. The required tricyclic ketone 33 was prepared by sequential Tebbe-Claisen rearrangement of lactones 29 and 30, which originated from the Diels-Alder cycloaddition of Danishefsky's diene to (5S)-5-(d-menthyloxy)-2(5H)-furanone (14). An allyl and a cyano group were introduced into the resulting adduct by means of stereocontrolled allylindation under aqueous Barbier-like conditions and by way of cyanotrimethylsilane, respectively. Following stereocontrolled nucleophilic addition of a methyl group to 33, ring A was elaborated by formation of the silyl enol ether, ytterbium triflate-catalyzed condensation with formaldehyde, O-silylation, and Cu(I)-promoted 1,4-addition of isopropylmagnesium chloride. The superfluous ketone carbonyl was subsequently removed and the second ether bridge introduced by means of oxymercuration chemistry. Only then was the exocyclic methylene group unmasked via elimination. An alternative approach to the alpha-carbinol diastereomer proceeds by initial alpha-oxygenation of 37 and ensuing 1,2-carbonyl transposition. Neither this series of steps nor the Wittig olefination to follow induced epimerization at C10. Through deployment of oxymercuration chemistry, it was again possible to elaborate the dual oxygen-bridge network of the target ring system. Oxidation of the organomercurial products with O(2) in the presence of sodium borohydride furnished 72, which was readily separated from its isomer 73 after oxidation to 61. Hydride attack on this ketone proceeded with high selectivity from the beta-direction to deliver (-)-60. Comparison of the high-field (1)H and (13)C NMR properties and polarity of synthetic 5 with natural material required that structural revision be made. Following a complete spectral reassessment of the structural assignments to many sclerophytin diterpenes, a general approach to sclerophytin A, three diastereomers thereof, and of sclerophytin B was devised. The presence of two oxygen bridges as originally formulated was thereby ruled out, and absolute configurations were properly determined. Key elements of the strategy include dihydroxylation of a medium-ring double bond, oxidation of the secondary hydroxyl in the two resulting diols, unmasking of an exocyclic methylene group at C-11, and stereocontrolled 1,2-reduction of the alpha-hydroxy ketone functionality made available earlier.
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Affiliation(s)
- P Bernardelli
- Department of Chemistry, The Ohio State University, Columbus, OH 43210, USA
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12
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Abstract
[see reaction]. A novel palladium-mediated, ligand-controlled double cyclization is reported. The C2-symmetric diene produced was desymmetrized via Sharpless asymmetric dihydroxylation and was further transformed into a known intermediate in the synthesis of uvaricin.
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Affiliation(s)
- S D Burke
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706-1396, USA.
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13
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Paquette LA, Moradei OM, Bernardelli P, Lange T. Synthesis of the alleged structure of sclerophytin A. The setting of two oxygen bridges within the fused cyclodecanol B ring is not Nature's Way. Org Lett 2000; 2:1875-8. [PMID: 10891180 DOI: 10.1021/ol000083o] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The structure attributed to sclerophytin A, a cytotoxic soft coral metabolite, was synthesized in an enantioselective manner from (5S)-5-(d-menthyloxy)-2(5H)-furanone. The spectral properties and polarity of the synthetic product require that the structural assignment to the natural material be revised.
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Affiliation(s)
- L A Paquette
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210, USA.
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14
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Casiraghi G, Zanardi F, Appendino G, Rassu G. The vinylogous aldol reaction: a valuable, yet understated carbon-carbon bond-forming maneuver. Chem Rev 2000; 100:1929-72. [PMID: 11749280 DOI: 10.1021/cr990247i] [Citation(s) in RCA: 484] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G Casiraghi
- Istituto per l'Applicazione delle Tecniche Chimiche Avanzate ai Problemi Agrobiologici del CNR, Via Vienna 2, I-07100 Sassari, Italy
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15
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16
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Lemée L, Jégou A, Veyrières A. Synthesis of a tetrahydrofuran fragment of annonaceous acetogenin from d-galactal. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)00322-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Asymmetric access to functional, structurally diverse molecules exploiting five-membered heterocyclic silyloxy dienes. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s1874-5148(98)80006-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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18
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Hanessian S, Grillo TA. Stereocontrolled Total Synthesis of an Annonacin A-Type Acetogenin: Pseudoannonacin A? J Org Chem 1998. [DOI: 10.1021/jo9713621] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stephen Hanessian
- Department of Chemistry, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, QC, H3C 3J7, Canada
| | - Teresa Abad Grillo
- Department of Chemistry, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, QC, H3C 3J7, Canada
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19
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Paquette LA, Lanter JC, Johnston JN. Single Stereodifferentiation Associated with Carbon Atom Insertion during the Oxonium Ion-Initiated Pinacol Rearrangement of Dihydrofuranyl and Dihydropyranyl Carbinols. J Org Chem 1997. [DOI: 10.1021/jo962019j] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leo A. Paquette
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
| | - James C. Lanter
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
| | - Jeffrey N. Johnston
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
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20
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Pichon M, Figadère B, Cavé A. C-Clycosylation of cyclic N-acyliminium ions with trimethylsilyloxyfuran. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)01828-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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21
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Koert U, Stein M, Wagner H. Stereoselective synthesis of oligo(tetrahydrofurans): Linear and convergent routes to bi- and tertetrahydrofurans. ACTA ACUST UNITED AC 1995. [DOI: 10.1002/jlac.1995199508192] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Rassu G, Zanardi F, Battistini L, Casiraghi G. Diastereoselective synthesis of α-C-arabinofuranosyl glycine. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0957-4166(95)00016-i] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Chapter 5.3 Five-membered ring systems: Furans and benzo derivatives. PROGRESS IN HETEROCYCLIC CHEMISTRY 1995. [DOI: 10.1016/s0959-6380(06)80009-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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24
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25
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An enantiomerically pure epoxyorganolithium reagent for the synthesis of oligo(tetrahydrofurans) by an epoxide-cascade reaction. Tetrahedron Lett 1994. [DOI: 10.1016/s0040-4039(00)78360-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Koert U, Wagner H, Pidun U. Stereoselective Additions of Chiral, Functionalized Organozinc Reagents to Achiral and Chiral Aldehydes: a Matched-Mismatched Case in Organozinc Chemistry. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/cber.19941270819] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Koert U, Stein M, Harms K. A Convergent Synthesis of 2,5-trans-Linked Oligo (tetrahydrofuran)s: Potential Building Blocks for a Polyether Helix with Ion Channel Activity. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/anie.199411801] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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28
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Koert U, Stein M, Harms K. Eine konvergente Synthese von 2,5-trans-verknüpften Oligo(tetrahydrofuranen), potentiellen Bausteinen einer Ionenkanal-aktiven Polyetherhelix. Angew Chem Int Ed Engl 1994. [DOI: 10.1002/ange.19941061118] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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30
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Wagner H, Koert U. Eine multiple Fünfring-selektive Williamson-Reaktion als Schlüsselschritt zum stereoselektiven Aufbau 2,5-verknüpfter Oligo(tetrahydrofurane). Angew Chem Int Ed Engl 1994. [DOI: 10.1002/ange.19941061818] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Figadère B, Chaboche C, Peyrat JF, Cavé A. Stereocontrolled synthesis of key intermediates in the total synthesis of acetogenins of annonaceae. Tetrahedron Lett 1993. [DOI: 10.1016/s0040-4039(00)61460-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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