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Liu XF, Zhang K, Wang LL, Wang H, Huang J, Zhang XT, Lu XB, Zhang WZ. Electroreductive Ring-Opening Carboxylation of Cycloketone Oxime Esters with Carbon Dioxide. J Org Chem 2022; 88:5212-5219. [PMID: 36273332 DOI: 10.1021/acs.joc.2c01816] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Electroreductive ring-opening carboxylation of cycloketone oxime esters with atmospheric carbon dioxide is reported. This reaction proceeded under simple constant current conditions in an undivided cell using glassy carbon as the cathode and magnesium as the sacrificial anode, providing substituted γ- and δ-cyanocarboxylic acids in moderate to good yields. Electrochemically generated cyanoalkyl radicals and cyanoalkyl anion are proposed as the key intermediates.
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Affiliation(s)
- Xiao-Fei Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China
| | - Ke Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China
| | - Lin-Lin Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China
| | - He Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China
| | - Jian Huang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China
| | - Xun-Ting Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China
| | - Xiao-Bing Lu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China
| | - Wen-Zhen Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China
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2
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Chen C, Ren Z, Sun Z, Sun Z, Shu X, Wang Y, Hu X. Construction of Tetracyclic Core Skeleton of
Cephalotaxus
Diterpenoids through Diastereoselective Pauson‐Khand Reaction. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chong‐Chong Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry&Materials Science Northwest University Xi'an 710127 China
| | - Zhiqiang Ren
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry&Materials Science Northwest University Xi'an 710127 China
| | - Zhongliu Sun
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry&Materials Science Northwest University Xi'an 710127 China
| | - Zezhong Sun
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry&Materials Science Northwest University Xi'an 710127 China
| | - Xin Shu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry&Materials Science Northwest University Xi'an 710127 China
| | - Yunxia Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry&Materials Science Northwest University Xi'an 710127 China
| | - Xiangdong Hu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry&Materials Science Northwest University Xi'an 710127 China
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3
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Sherwood AM, Williamson SE, Johnson SN, Yilmaz A, Day VW, Prisinzano TE. Scalable Regioselective and Stereoselective Synthesis of Functionalized (E)-4-Iodobut-3-en-1-ols: Gram-Scale Total Synthesis of Fungal Decanolides and Derivatives. J Org Chem 2018; 83:980-992. [PMID: 29271194 DOI: 10.1021/acs.joc.7b02324] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A reliable protocol to synthesize both racemic and chiral (E)-4-iodobut-3-en-1-ols from aldehydes or epoxides, respectively, containing various aromatic and aliphatic substitutions has been established. The utility of these compounds was then demonstrated by providing access to known fungal decanolides as well as novel aromatic macrocycles. The protocol provided a gram-scale route to (-)-aspinolide A and (-)-5-epi-aspinolide A utilizing a catalytic Nozaki-Hiyama-Kishi reaction to close the macrolide in the final step in 65-84% yields.
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Affiliation(s)
- Alexander M Sherwood
- Department of Medicinal Chemistry, School of Pharmacy, The University of Kansas , Lawrence, Kansas 66047, United States
| | - Samuel E Williamson
- Department of Medicinal Chemistry, School of Pharmacy, The University of Kansas , Lawrence, Kansas 66047, United States
| | - Stephanie N Johnson
- Department of Medicinal Chemistry, School of Pharmacy, The University of Kansas , Lawrence, Kansas 66047, United States
| | - Anil Yilmaz
- Department of Medicinal Chemistry, School of Pharmacy, The University of Kansas , Lawrence, Kansas 66047, United States
| | - Victor W Day
- Department of Medicinal Chemistry, School of Pharmacy, The University of Kansas , Lawrence, Kansas 66047, United States
| | - Thomas E Prisinzano
- Department of Medicinal Chemistry, School of Pharmacy, The University of Kansas , Lawrence, Kansas 66047, United States
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4
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Tanaka-Yanuma A, Watanabe S, Ogawa K, Watanabe S, Aoki N, Ogura T, Usuki T. Synthesis of the polyketide moiety of the jamaicamides. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.10.069] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Alvarado J, Herrmann AT, Zakarian A. Stereoselective α-Fluorination of N-Acyloxazolidinones at Room Temperature within 1 h. J Org Chem 2014; 79:6206-20. [DOI: 10.1021/jo500957d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Joseph Alvarado
- Department of Chemistry and
Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Aaron T. Herrmann
- Department of Chemistry and
Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Armen Zakarian
- Department of Chemistry and
Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
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7
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Smith AB, Risatti CA, Atasoylu O, Bennett CS, Liu J, Cheng H, TenDyke K, Xu Q. Design, synthesis, and biological evaluation of diminutive forms of (+)-spongistatin 1: lessons learned. J Am Chem Soc 2011; 133:14042-53. [PMID: 21761891 PMCID: PMC3164888 DOI: 10.1021/ja2046167] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The design, synthesis, and biological evaluation of two diminutive forms of (+)-spongistatin 1, in conjunction with the development of a potentially general design strategy to simplify highly flexible macrocyclic molecules while maintaining biological activity, have been achieved. Examination of the solution conformations of (+)-spongistatin 1 revealed a common conformational preference along the western perimeter comprising the ABEF rings. Exploiting the hypothesis that the small-molecule recognition/binding domains are likely to comprise the conformationally less mobile portions of a ligand led to the design of analogues, incorporating tethers (blue) in place of the CD and the ABCD components of the (+)-spongistatin 1 macrolide, such that the conformation of the retained (+)-spongistatin 1 skeleton would mimic the assigned solution conformations of the natural product. The observed nanomolar cytotoxicity and microtubule destabilizing activity of the ABEF analogue provide support for both the assigned solution conformation of (+)-spongistatin 1 and the validity of the design strategy.
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Affiliation(s)
- Amos B Smith
- Monell Chemical Senses Center and Laboratory for Research on the Structure of Matter, Department of Chemistry, University of Pennsylvania , Philadelphia, 19104, United States.
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Han X, Jiang L, Tang M, Hu W. Diastereoselective three-component reactions of aryldiazoacetates with alcohols/water and alkynals: application to substituted enelactones. Org Biomol Chem 2011; 9:3839-43. [DOI: 10.1039/c1ob05076a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Aravindu K, Krayer M, Kim HJ, Lindsey JS. Facile synthesis of a B,D-tetradehydrocorrin and rearrangement to bacteriochlorins. NEW J CHEM 2011. [DOI: 10.1039/c1nj20027e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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10
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Smith AB, Risatti CA, Atasoylu O, Bennett CS, Tendyke K, Xu Q. Design, synthesis, and biological evaluation of EF- and ABEF- analogues of (+)-spongistatin 1. Org Lett 2010; 12:1792-5. [PMID: 20297810 PMCID: PMC2853872 DOI: 10.1021/ol100418n] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The design, synthesis, and biological evaluation of two potential (+)-spongistatin 1 analogues have been achieved. The analogues, incorporating tethers (red) in place of the ABCD and the CD components of the (+)-spongistatin 1 macrolide, were designed such that the conformations of the retained skeleton (blue) would mimic the assigned major solution conformation of the natural product The nanomolar cytotoxicity observed for the ABEF analogue provides strong support for the assigned solution conformation.
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Affiliation(s)
- Amos B Smith
- Department of Chemistry, Monell Chemical Senses Center and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
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A. Jacobi P, L. Brielmann H, Chiu M, Ghosh I, I. Hauck S, Lanz S, Leung S, Li Y, Liu H, Löwer F, G. O’Neal W, Pippin D, Pollina E, A. Pratt B, Robert F, P. Roberts W, Tassa C, Wang H. 4-Alkynoic Acids in the Synthesis of Biologically Important Tetrapyrroles. HETEROCYCLES 2010. [DOI: 10.3987/rev-10-sr(e)6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Galanin NE, Yakubov LA, Kudrik EV, Shaposhnikov GP. Metal complexes of 1-methyltetrabenzooctadehydrocorrin. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2009. [DOI: 10.1134/s1070428009020080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Beccalli EM, Broggini G, Martinelli M, Sottocornola S. C−C, C−O, C−N Bond Formation on sp2 Carbon by Pd(II)-Catalyzed Reactions Involving Oxidant Agents. Chem Rev 2007; 107:5318-65. [PMID: 17973536 DOI: 10.1021/cr068006f] [Citation(s) in RCA: 1051] [Impact Index Per Article: 61.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Egle M. Beccalli
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, and Dipartimento di Scienze Chimiche e Ambientali, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Gianluigi Broggini
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, and Dipartimento di Scienze Chimiche e Ambientali, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Michela Martinelli
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, and Dipartimento di Scienze Chimiche e Ambientali, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Silvia Sottocornola
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, and Dipartimento di Scienze Chimiche e Ambientali, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
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Spickenreither M, Braun S, Bernhardt G, Dove S, Buschauer A. Novel 6-O-acylated vitamin C derivatives as hyaluronidase inhibitors with selectivity for bacterial lyases. Bioorg Med Chem Lett 2006; 16:5313-6. [PMID: 16908142 DOI: 10.1016/j.bmcl.2006.07.087] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2006] [Revised: 07/27/2006] [Accepted: 07/27/2006] [Indexed: 11/21/2022]
Abstract
Previously, we identified ascorbic acid 6-O-hexadecanoate as an up to 1500 times more potent inhibitor of bacterial and bovine hyaluronidases than the parent compound, vitamin C, and determined a crystal structure of hyaluronidase from Streptococcus pneumoniae in complex with the inhibitor. As the alkanoyl chain interacts with a hydrophobic patch of the enzyme we synthesized other 6-O-acylated vitamin C derivatives bearing various lipophilic residues and investigated the inhibition of Streptococcus agalactiae strain 4755 hyaluronidase (SagHyal(4755)) and of bovine testicular hyaluronidases (BTH) in a turbidimetric assay. All compounds showed selectivity for the bacterial enzyme. Whereas vitamin C 6-O-hexanoate only weakly inhibited SagHyal(4755), the inhibition of both enzymes increased with the length of the aliphatic chain. In the case of the 6-O-octadecanoate, IC(50) values of 0.9 and 39microM for SagHyal(4755) and BTH, respectively, were determined. Partial replacement of the aliphatic chain with a phenyl, p-phenylene or p-biphenylyl group resulted in inhibitors with activity in the lower micromolar range, too. The title compounds are among the most potent inhibitors of both enzymes known to date.
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Affiliation(s)
- Martin Spickenreither
- Institute of Pharmacy, Pharmaceutical/Medicinal Chemistry II, University of Regensburg, Universitätsstr. 31, D-93040 Regensburg, Germany
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Grossert JS, Cook MC, White RL. The influence of structural features on facile McLafferty-type, even-electron rearrangements in tandem mass spectra of carboxylate anions. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2006; 20:1511-6. [PMID: 16628561 DOI: 10.1002/rcm.2506] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
In contrast to the well-described McLafferty rearrangement in odd-electron cations, relatively little has been reported on comparable rearrangements in even-electron ions, especially negative ions. This work reports a systematic study using tandem mass spectrometry (MS/MS) fragment ion spectra of carboxylate anions having a suitably acidic proton in the gamma position. The rearrangement process was studied in both ion trap and triple quadrupole mass spectrometers; characteristic enolate anions and stable neutral products were formed at low collision energies. The process has diagnostic and analytical potential in, for example, the analysis of peptides having C-terminal serine residues and of 3-hydroxy- or 3-aminocarboxylic acids in complex mixtures.
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Affiliation(s)
- J Stuart Grossert
- Department of Chemistry, Dalhousie University, Halifax, NS, Canada B3H 4J3
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19
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Jacobi PA, Tassa C. Enantioselective Syntheses of Ring-C Precursors of Vitamin B12. Substrate Control. A Novel Si-Assisted Elimination of Vinyl Bromides. Org Lett 2003; 5:4879-82. [PMID: 14653697 DOI: 10.1021/ol036061u] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Homochiral ring-C precursors 34 of Vitamin B(12) have been prepared by Ireland-Claisen rearrangement of allyl esters 32, followed by a novel Si-assisted elimination of HBr. [reaction: see text]
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Affiliation(s)
- Peter A Jacobi
- Burke Chemical Laboratory, Dartmouth College, Hanover, New Hampshire 03755, USA.
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