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Zhang L, Yang W, Hu Z, Zhang X, Xu X. Tandem Access to Acridones and their Fused Derivatives: [1+2+3] Annulation of Isocyanides with Unsaturated Carbonyls. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901560] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Ling‐Juan Zhang
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials (Ministry of Education), School of Chemistry & Material ScienceShanxi Normal University, Linfen Shanxi 041004 People's Republic of China
| | - Wenhui Yang
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials (Ministry of Education), School of Chemistry & Material ScienceShanxi Normal University, Linfen Shanxi 041004 People's Republic of China
| | - Zhongyan Hu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano ScienceShandong Normal University Jinan 250014 People's Republic of China
| | - Xian‐Ming Zhang
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials (Ministry of Education), School of Chemistry & Material ScienceShanxi Normal University, Linfen Shanxi 041004 People's Republic of China
| | - Xianxiu Xu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano ScienceShandong Normal University Jinan 250014 People's Republic of China
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Çalışkan R, Sari O, Balci M. Functionalization of oxabenzonorbornadiene: Manganese(III)-mediated oxidative addition of dimedone. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3720] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Raşit Çalışkan
- Department of Chemistry; Süleyman Demirel University; Isparta Turkey
- Department of Chemistry; Middle East Technical University; Ankara Turkey
| | - Ozlem Sari
- Department of Chemistry; Middle East Technical University; Ankara Turkey
- Department of Chemistry; Ahi Evran University; Kırşehir Turkey
| | - Metin Balci
- Department of Chemistry; Middle East Technical University; Ankara Turkey
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Coussanes G, Bonjoch J. Synthesis of the Tetracyclic ABCD Ring Domain of Calyciphylline A-Type Alkaloids via Reductive Radical Cyclizations. Org Lett 2017; 19:878-881. [DOI: 10.1021/acs.orglett.7b00035] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guilhem Coussanes
- Laboratori de Química
Orgànica, Facultat de Farmàcia, IBUB, Universitat de Barcelona, Av Joan XXIII s/n, 08028 Barcelona, Spain
| | - Josep Bonjoch
- Laboratori de Química
Orgànica, Facultat de Farmàcia, IBUB, Universitat de Barcelona, Av Joan XXIII s/n, 08028 Barcelona, Spain
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Yamazaki S, Sugiura H, Niina M, Mikata Y, Ogawa A. Inter- and Intramolecular Diels-Alder Reaction of Ethenetricarboxylate Derivatives. HETEROCYCLES 2016. [DOI: 10.3987/com-15-13394] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Pritzius AB, Breit B. Z
‐Selective Hydrothiolation of Racemic 1,3‐Disubstituted Allenes: An Atom‐Economic Rhodium‐Catalyzed Dynamic Kinetic Resolution. Angew Chem Int Ed Engl 2015; 54:15818-22. [DOI: 10.1002/anie.201507623] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Indexed: 01/27/2023]
Affiliation(s)
- Adrian B. Pritzius
- Institut für Organische Chemie, Albert‐Ludwigs‐Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau (Germany)
| | - Bernhard Breit
- Institut für Organische Chemie, Albert‐Ludwigs‐Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau (Germany)
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Pritzius AB, Breit B. Z
‐Selective Hydrothiolation of Racemic 1,3‐Disubstituted Allenes: An Atom‐Economic Rhodium‐Catalyzed Dynamic Kinetic Resolution. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507623] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Adrian B. Pritzius
- Institut für Organische Chemie, Albert‐Ludwigs‐Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau (Germany)
| | - Bernhard Breit
- Institut für Organische Chemie, Albert‐Ludwigs‐Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau (Germany)
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Wang C, Kong L, Li Y, Li Y. Palladium-Catalyzed Allenylation/Intramolecular Diels-Alder Reaction of Furans with Propargyl Carboxylates for the Synthesis of Polycyclic Compounds. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402059] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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9
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Rack-mounted chemistry IV: the thermal rearrangement of 7-oxabenzonorbornadienes into benzo[b]oxepines on and off the polycyclic rack. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Padwa A, Flick AC. Intramolecular Diels–Alder Cycloaddition of Furans (IMDAF) for Natural Product Synthesis. ADVANCES IN HETEROCYCLIC CHEMISTRY 2013. [DOI: 10.1016/b978-0-12-408100-0.00001-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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12
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Seo JH, Liu P, Weinreb SM. Evolution of a strategy for total synthesis of the marine fungal alkaloid (+/-)-communesin F. J Org Chem 2010; 75:2667-80. [PMID: 20334369 DOI: 10.1021/jo100339k] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new synthetic strategy for construction of the heptacyclic marine fungal alkaloid (+/-)-communesin F has been devised. Key reactions include an intramolecular Heck cyclization of a tetrasubstituted alkene to generate a tetracyclic enamide bearing one of the quaternary carbon centers (C7) of the alkaloid, an intramolecular reductive cyclization of an N-Boc aniline onto the oxindole moiety to form a pentacyclic framework containing the southern aminal, a stereoselective N-Boc-lactam enolate C-allylation to introduce the second quaternary carbon center (C8), and an azide reduction/N-Boc-lactam-opening cascade leading to the northern aminal.
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Affiliation(s)
- Jae Hong Seo
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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Claeys DD, Stevens CV, Roman BI, Van De Caveye P, Waroquier M, Van Speybroeck V. Experimental and computational study of the ring opening of tricyclic oxanorbornenes to polyhydro isoindole phosphonates. Org Biomol Chem 2010; 8:3644-54. [PMID: 20544085 DOI: 10.1039/c002926b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Phosphonylated azaheterocycles are an important class of compounds with high biological potential as conformationally restricted bioisosteres of amino acids. Therefore, it is of interest to synthesize conformationally constrained amino phosphonates. We wanted to investigate possible routes via ring opening of alpha-amino phosphonates with an oxanorbornene skeleton, as these can be synthesized with high stereoselectivity. This was achieved using different Lewis acids, leading to a range of products. The reaction with TiCl(4) and FeCl(3) was modelled at a DFT level of theory to get insight in the pathways towards the corresponding products. To ease the work up, the Fe(iii) catalyst was coated on montmorillonite clay, but this accelerated aromatization after ring opening. Quenching the FeCl(3) catalyzed reaction mixture on celite caused complete aromatization.
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Affiliation(s)
- Diederica D Claeys
- Research group SynBioC, Department of Organic Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000, Ghent, Belgium
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Abstract
A concise approach to the core skeleton of the welwitindolinone alkaloids was developed on the basis of sequential cycloaddition reactions. First, a palladium catalyzed enantioselective [6 + 3] trimethylenemethane cycloaddition onto a tropone nucleus was used to generate the requisite bicyclo[4.3.1]decadiene. Subsequent modifications to the cycloadduct allowed for an intramolecular [4 + 2] cycloaddition to generate the oxindole and complete the core of the natural product family.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA.
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Synthesis of an octahydroindolinone scaffold for a diversity-based chemical compound library. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.06.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Padwa A, Wang Q. Synthesis of the tetracyclic framework of the erythrina alkaloids using a [4 + 2]-cycloaddition/Rh(I)-catalyzed cascade of 2-imidofurans. J Org Chem 2006; 71:7391-402. [PMID: 16958534 PMCID: PMC2494947 DOI: 10.1021/jo061269p] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Several 2-imido substituted furans were found to undergo a rapid intramolecular [4 + 2]-cycloaddition to deliver oxabicyclo adducts in good to excellent yields. By using a Rh(I)-catalyzed ring opening of the resulting oxabicyclic adduct, it was possible to prepare several highly functionalized tetrahydro-1H-indol-2(3H)-one derivatives which were then used to prepare several erythrina alkaloids. By taking advantage of the Rh(I)-catalyzed reaction, it was possible to convert tert-butyl 3-oxo-5-carbomethoxy-10-oxa-2-azatricyclo[5.2.1.0(1,5)]dec-8-ene-2-carboxylate into the ring opened boronate by reaction with phenylboronic acid. Treatment of the boronate with pinacol/acetic acid afforded the corresponding diol which was used in a successful synthesis of racemic 3-demethoxyerythratidinone. During the course of these studies, several novel rearrangement reactions were encountered while attempting to induce an acid-initiated Pictet Spengler cyclization of a key lactam intermediate. The IMDAF/Rh(I)-catalyzed ring opening cascade sequence was also applied to the total synthesis of (+/-)-erysotramidine as well as the lycorine type alkaloid (+/-)-epi-zephyranthine.
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Affiliation(s)
- Albert Padwa
- Department of Chemistry, Emory University, Atlanta, Georgia 30322,
| | - Qiu Wang
- Department of Chemistry, Emory University, Atlanta, Georgia 30322,
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