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Hann JL, Lyall CL, Kociok-Köhn G, Faverio C, Pantoş GD, Lewis SE. Unusual Regio- and Chemoselectivity in Oxidation of Pyrroles and Indoles Enabled by a Thianthrenium Salt Intermediate. Angew Chem Int Ed Engl 2024; 63:e202405057. [PMID: 38830180 DOI: 10.1002/anie.202405057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/31/2024] [Accepted: 06/03/2024] [Indexed: 06/05/2024]
Abstract
A dearomative oxidation of pyrroles to Δ3-pyrrol-2-ones is described, which employs a sulfoxide as oxidant, in conjunction with a carboxylic acid anhydride and a Brønsted acid additive. 3-substituted pyrroles undergo regioselective oxidation to give the product isomer in which oxygen has been introduced at the more hindered position. Regioselectivity is rationalized by a proposed mechanism that proceeds by initial thianthrenium introduction at the less-hindered pyrrole α-position, followed by distal attack of an oxygen nucleophile and subsequent elimination of thianthrene. The same reaction conditions are also able to effect a chemoselective oxidation of indoles to indolin-3-ones and additionally of indolin-3-ones to 2-hydroxyindolin-3-ones. Here again, the regio- and chemoselectivities are rationalized through the intermediacy of a thianthrenium salt.
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Affiliation(s)
- Jodie L Hann
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
| | - Catherine L Lyall
- Research Facilities, University of Bath, Bath, BA2 7AY, United Kingdom
| | | | - Chiara Faverio
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
| | - G Dan Pantoş
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
| | - Simon E Lewis
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
- Institute of Sustainability and Climate Change, University of Bath, Bath, BA2 7AY, United Kingdom
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2
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Olivier WJ, Henneveld JS, Smith JA, Hawkins BC, Bissember AC. Strategies for the synthesis of Stemona alkaloids: an update. Nat Prod Rep 2022; 39:2308-2335. [PMID: 36218078 DOI: 10.1039/d2np00058j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Covering: 2009 to 2022The Stemona alkaloids, which are found in plant species from the family Stemonaceae, represent a tremendously large and structurally-diverse family of natural products. This review presents and discusses a selection of case studies, grouped by alkaloid class, that showcase the key strategies and overall progress that has been made in the synthesis of Stemona alkaloids and related compounds since 2009. Structural reassignments that have been reported over this period are also identified where necessary.
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Affiliation(s)
- Wesley J Olivier
- School of Natural Sciences - Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia.
| | - Jackson S Henneveld
- Department of Chemistry, University of Otago, Dunedin, Otago 9054, New Zealand.
| | - Jason A Smith
- School of Natural Sciences - Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia.
| | - Bill C Hawkins
- Department of Chemistry, University of Otago, Dunedin, Otago 9054, New Zealand.
| | - Alex C Bissember
- School of Natural Sciences - Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia.
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3
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Sarkar S, Banerjee A, Shah JA, Mukherjee U, Frederiks NC, Johnson CJ, Ngai MY. Excited-State Copper-Catalyzed [4 + 1] Annulation Reaction Enables Modular Synthesis of α,β-Unsaturated-γ-Lactams. J Am Chem Soc 2022; 144:20884-20894. [PMID: 36326178 PMCID: PMC9754811 DOI: 10.1021/jacs.2c09006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Synthesis of α,β-unsaturated-γ-lactams continue to attract attention due to the importance of this structural motif in organic chemistry. Herein, we report the development of a visible-light-induced excited-state copper-catalyzed [4 + 1] annulation reaction for the preparation of a wide range of γ-H, -OH, and -OR-substituted α,β-unsaturated-γ-lactams using acrylamides as the 4-atom unit and aroyl chlorides as the 1-atom unit. This modular synthetic protocol features mild reaction conditions, broad substrate scope, and high functional group tolerance. The reaction is amenable to late-stage diversification of complex molecular architectures, including derivatives of marketed drugs. The products of the reaction can serve as versatile building blocks for further derivatization. Preliminary mechanistic studies suggest an inner-sphere catalytic cycle involving photoexcitation of the Cu(BINAP) catalyst, single-electron transfer, and capture of radical intermediates by copper species, followed by reductive elimination or protonation to give the desired γ-functionalized α,β-unsaturated-γ-lactams.
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Affiliation(s)
- Satavisha Sarkar
- Department of Chemistry, State University of New York, Stony Brook, New York, 11794-3400, USA
| | - Arghya Banerjee
- Department of Chemistry, State University of New York, Stony Brook, New York, 11794-3400, USA
| | - Jagrut A. Shah
- Department of Chemistry, State University of New York, Stony Brook, New York, 11794-3400, USA
| | - Upasana Mukherjee
- Department of Chemistry, State University of New York, Stony Brook, New York, 11794-3400, USA
| | - Nicoline C. Frederiks
- Department of Chemistry, State University of New York, Stony Brook, New York, 11794-3400, USA
| | - Christopher J. Johnson
- Department of Chemistry, State University of New York, Stony Brook, New York, 11794-3400, USA
| | - Ming-Yu Ngai
- Department of Chemistry, State University of New York, Stony Brook, New York, 11794-3400, USA
- Institute of Chemical Biology and Drug Discovery, State University of New York, Stony Brook, New York, 11794-3400 USA
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4
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Farshadfar K, Gunawan N, Shiri F, Howard JK, Vaas APJP, Bissember AC, Yates BF, Smith JA, Ariafard A. Discovery of Periodinane Oxy-Assisted (POA) Oxidation Mechanism in the IBX-Controlled Oxidative Dearomatization of Pyrroles Mediated by Acetic Acid. J Org Chem 2022; 87:13280-13287. [PMID: 36162101 DOI: 10.1021/acs.joc.2c01923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The 2-iodoxybenzoic acid (IBX)-controlled oxidative dearomatization of pyrroles occurs very slowly (or not all) in many organic solvents, including DMSO in which IBX is soluble. Interestingly, although IBX is only partially soluble in acetic acid, this solvent mediates the pyrrole oxidative dearomatization. With the aid of density functional theory (DFT) calculations, we have discovered a new mode of reactivity, termed the periodinane oxy-assisted (POA) oxidation mechanism, which explains this observation.
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Affiliation(s)
- Kaveh Farshadfar
- Department of Chemistry, Islamic Azad University, Central Tehran Branch, Poonak, Tehran 1469669191, Iran.,Research Group of Computational Chemistry, Department of Chemistry and Materials Science, Aalto University, FI-00076 Aalto, Finland
| | - Nina Gunawan
- School of Natural Sciences, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Farshad Shiri
- Department of Chemistry, Islamic Azad University, Central Tehran Branch, Poonak, Tehran 1469669191, Iran
| | - James K Howard
- School of Natural Sciences, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | | | - Alex C Bissember
- School of Natural Sciences, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Brian F Yates
- School of Natural Sciences, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Jason A Smith
- School of Natural Sciences, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Alireza Ariafard
- School of Natural Sciences, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
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5
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Olivier WJ, Smith JA, Bissember AC. Structural Revision of Parvistemoamide: Informing Biosynthetic Proposals of Stemona Alkaloids. Org Lett 2022; 24:5772-5776. [PMID: 35901193 DOI: 10.1021/acs.orglett.2c02254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The natural product parvistemoamide was isolated in 1991 and has ostensibly eluded synthesis. Its distinctive assigned structure represents the first and only Stemona alkaloid within its class. For over 30 years, this structure has influenced biosynthetic proposals concerning this family of natural products. Following synthetic studies and comprehensive analysis of relevant literature, a revised structure of parvistemoamide is proposed that is consistent with the fundamental Stemona alkaloid stemoamide.
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Affiliation(s)
- Wesley J Olivier
- School of Natural Sciences (Chemistry), University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Jason A Smith
- School of Natural Sciences (Chemistry), University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Alex C Bissember
- School of Natural Sciences (Chemistry), University of Tasmania, Hobart, Tasmania 7001, Australia
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6
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Kang JY, Kim S, Moon J, Chung E, Kim J, Kyung SY, Kim HS, Mishra NK, Kim IS. Synthesis of Succinimide-Linked Indazol-3-ols Derived from Maleimides under Rh(III) Catalysis. ACS OMEGA 2022; 7:14712-14722. [PMID: 35557672 PMCID: PMC9088931 DOI: 10.1021/acsomega.1c07363] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/21/2022] [Indexed: 05/14/2023]
Abstract
The structural modification of N-aryl indazolols as tautomers of N-aryl indazolones has been established as a hot topic in pharmaceutics and medicinal chemistry. We herein disclose the rhodium(III)-catalyzed 1,4-addition reaction of maleimides with N-aryl indazol-3-ols, which provides the succinimide-bearing indazol-3-ol scaffolds with complete regioselectivity and a good functional group tolerance. Notably, the versatility of this protocol is demonstrated by the use of drug-molecule-linked and fluorescence-probe-linked maleimides.
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7
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Olivier WJ, Smith JA, Bissember AC. Synthesis of Pyrrolidine- and γ-Lactam-Containing Natural Products and Related Compounds from Pyrrole Scaffolds. CHEM REC 2021; 22:e202100277. [PMID: 34862727 DOI: 10.1002/tcr.202100277] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/18/2021] [Indexed: 11/11/2022]
Abstract
Polycyclic alkaloid natural products featuring pyrrolidine and pyrrolidinone motifs remain enduring targets of total synthesis endeavors. Pyrrole and its derivatives have been exploited to access many such frameworks, including alkaloids belonging to the Aspidosperma, Stemona, and batzelladine families. In this article, a selection of exemplars that highlight the utility of pyrrole-based approaches to facilitate total syntheses of pyrrolidine- and pyrrolidinone-containing alkaloids and related molecules are showcased.
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Affiliation(s)
- Wesley J Olivier
- School of Natural Sciences-Chemistry, University of Tasmania Hobart, Tasmania, Australia
| | - Jason A Smith
- School of Natural Sciences-Chemistry, University of Tasmania Hobart, Tasmania, Australia
| | - Alex C Bissember
- School of Natural Sciences-Chemistry, University of Tasmania Hobart, Tasmania, Australia
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8
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Olivier WJ, Lucas NT, Bissember AC, Smith JA. Revised Structures of Dehydrostenines A and B: Total Syntheses of (±)-Dehydrostenine A and Structure Assigned to Dehydrostenine B. Chemistry 2021; 27:15382-15386. [PMID: 34426989 DOI: 10.1002/chem.202102651] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Indexed: 01/12/2023]
Abstract
The first total syntheses of the Stemona alkaloid dehydrostenine A and the structure assigned to dehydrostenine B have been completed from a simple pyrrole substrate in 10 and 11 steps, respectively. Two independent Brønsted-acid-mediated intramolecular Michael additions were exploited to construct the tetracyclic dehydrostenine core. As a result of synthetic studies and associated analysis of the relevant literature, revisions of the structures originally assigned to dehydrostenines A and B are proposed.
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Affiliation(s)
- Wesley J Olivier
- School of Natural Sciences - Chemistry, University of Tasmania, Hobart, Tasmania, Australia
| | - Nigel T Lucas
- Department of Chemistry, University of Otago, Dunedin, Otago, New Zealand
| | - Alex C Bissember
- School of Natural Sciences - Chemistry, University of Tasmania, Hobart, Tasmania, Australia
| | - Jason A Smith
- School of Natural Sciences - Chemistry, University of Tasmania, Hobart, Tasmania, Australia
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9
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Olivier WJ, Bissember AC, Smith JA. Unified Total Syntheses of (±)-Sessilifoliamides B, C, and D. Org Lett 2021; 23:3437-3441. [PMID: 33847506 DOI: 10.1021/acs.orglett.1c00895] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The first total syntheses of the Stemona alkaloids sessilifoliamides B and D and the second synthesis of sessilifoliamide C have been completed from a simple pyrrole substrate. The bicyclic lactam core was prepared on a gram scale via a Brønsted acid mediated cyclization and controlled oxidation with Dess-Martin periodinane. This delivered sessilifoliamide C (and its C-11 epimer) in 24% yield over 11 steps, and sessilifoliamides B and D in 13 and 17 steps, respectively.
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Affiliation(s)
- Wesley J Olivier
- School of Natural Sciences - Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Alex C Bissember
- School of Natural Sciences - Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Jason A Smith
- School of Natural Sciences - Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
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10
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Kellert M, Sárosi I, Rajaratnam R, Meggers E, Lönnecke P, Hey-Hawkins E. Ruthenacarborane-Phenanthroline Derivatives as Potential Metallodrugs. Molecules 2020; 25:molecules25102322. [PMID: 32429279 PMCID: PMC7287719 DOI: 10.3390/molecules25102322] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/04/2020] [Accepted: 05/12/2020] [Indexed: 01/28/2023] Open
Abstract
Ruthenium-based complexes have received much interest as potential metallodrugs. In this work, four RuII complexes bearing a dicarbollide moiety, a carbonyl ligand, and a phenanthroline-based ligand were synthesized and characterized, including single crystal diffraction analysis of compounds 2, 4, and 5 and an observed side product SP1. Complexes 2-5 are air and moisture stable under ambient conditions. They show excellent solubility in organic solvents, but low solubility in water.
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Affiliation(s)
- Martin Kellert
- Institute of Inorganic Chemistry, Faculty of Chemistry and Mineralogy, Leipzig University, Johannisallee 29, 04103 Leipzig, Germany; (M.K.); (I.S.); (P.L.)
| | - Imola Sárosi
- Institute of Inorganic Chemistry, Faculty of Chemistry and Mineralogy, Leipzig University, Johannisallee 29, 04103 Leipzig, Germany; (M.K.); (I.S.); (P.L.)
| | - Rajathees Rajaratnam
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein Straße 4, 35043 Marburg, Germany; (R.R.); (E.M.)
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein Straße 4, 35043 Marburg, Germany; (R.R.); (E.M.)
| | - Peter Lönnecke
- Institute of Inorganic Chemistry, Faculty of Chemistry and Mineralogy, Leipzig University, Johannisallee 29, 04103 Leipzig, Germany; (M.K.); (I.S.); (P.L.)
| | - Evamarie Hey-Hawkins
- Institute of Inorganic Chemistry, Faculty of Chemistry and Mineralogy, Leipzig University, Johannisallee 29, 04103 Leipzig, Germany; (M.K.); (I.S.); (P.L.)
- Correspondence: ; Tel.: +49-341-97-36151
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11
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Huang H, Hu B, Lai Y, Zou Z, Lin H, Xiao Y, You Q, Shen J. Base-Promoted Oxidative Dearomatization of Pyrroles to 4-Pyrrolin-2-ones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800845] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Huabin Huang
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Bing Hu
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Yuanfa Lai
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Zhongai Zou
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Huixia Lin
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Yujuan Xiao
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Qihua You
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
| | - Jinhai Shen
- Department of Science and Technology for Inspection; Xiamen Huaxia University; Xiamen 361024 China
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12
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Brønsted acid-mediated annulations of pyrroles featuring N-tethered α,β-unsaturated ketones and esters: Total syntheses of (±)-tashiromine and (±)-indolizidine 209I. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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13
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Grelier G, Darses B, Dauban P. Hypervalent organoiodine compounds: from reagents to valuable building blocks in synthesis. Beilstein J Org Chem 2018; 14:1508-1528. [PMID: 30013678 PMCID: PMC6037006 DOI: 10.3762/bjoc.14.128] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 05/25/2018] [Indexed: 01/04/2023] Open
Abstract
Most of the polyvalent organoiodine compounds derive from iodoarenes, which are released in stoichiometric amounts in any reaction mediated by λ3- or λ5-iodanes. In parallel to the development of solid-supported reagents or reactions catalytic in iodine, a third strategy has emerged to address this issue in terms of sustainability. The atom-economy of transformations involving stoichiometric amounts of λ3- or λ5-iodanes, thus, has been improved by designing tandem reactions that allows for incorporating the aryl motif into the products through a subsequent one-pot nucleophilic addition or catalytic coupling reaction. This review summarizes the main achievements reported in this area.
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Affiliation(s)
- Gwendal Grelier
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Benjamin Darses
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Philippe Dauban
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France
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14
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Rihak KJ, Bissember AC, Smith JA. Polygodial: A viable natural product scaffold for the rapid synthesis of novel polycyclic pyrrole and pyrrolidine derivatives. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.10.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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15
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Shiri M, Ranjbar M, Yasaei Z, Zamanian F, Notash B. Palladium-catalyzed tandem reaction of 2-chloroquinoline-3-carbaldehydes and isocyanides. Org Biomol Chem 2018; 15:10073-10081. [PMID: 29168530 DOI: 10.1039/c7ob02043k] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A facile domino reaction of 2-chloroquinoline-3-carbaldehydes in one and two equivalents of isocyanide has been investigated. Three-component reactions of 2-chloroquinoline-3-carbaldehydes, isocyanides and amines are also described. In this Pd-catalyzed reaction under controlled conditions, three novel types of quinoline derivatives were formed via amidation, lactamization or carbamate formation along with the formation of C-C, C-N, and C-O bonds in a one-pot procedure.
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Affiliation(s)
- Morteza Shiri
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran.
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16
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Howard JK, Rihak KJ, Hyland CJT, Bissember AC, Smith JA. Visible light dye-photosensitised oxidation of pyrroles using a simple LED photoreactor. Org Biomol Chem 2016; 14:8873-8880. [PMID: 27722413 DOI: 10.1039/c6ob01719c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photooxidation of pyrrole is typically low yielding due to the absorbance of ultraviolet light, which leads to uncontrolled polymerisation and decomposition. Presented herein is the development of a simple and cost-effective photoreactor utilising Light Emitting Diodes (LEDs) as the light source, and its application to the dye-sensitised oxidation of a range of pyrroles to give corresponding 3-pyrrolin-2-ones. The broader applicability of this approach to the generation of 1O2 is also explored.
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Affiliation(s)
- James K Howard
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
| | - Kieran J Rihak
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
| | | | - Alex C Bissember
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
| | - Jason A Smith
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
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17
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Faigl F, Deák S, Mucsi Z, Hergert T, Balázs L, Sándor B, Balázs B, Holczbauer T, Nyerges M, Mátravölgyi B. A novel and convenient method for the preparation of 5-(diphenylmethylene)-1 H -pyrrol-2(5 H )-ones; synthesis and mechanistic study. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Andreev IA, Ratmanova NK, Novoselov AM, Belov DS, Seregina IF, Kurkin AV. Oxidative Dearomatization of 4,5,6,7-Tetrahydro-1H-indoles Obtained by Metal- and Solvent-Free Thermal 5-endo-digCyclization: The Route to Erythrina and Lycorine Alkaloids. Chemistry 2016; 22:7262-7. [PMID: 27076115 DOI: 10.1002/chem.201600273] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Ivan A. Andreev
- Department of Chemistry; Lomonosov Moscow State University; Leninsky Gory 1/3 119991 Moscow Russia
| | - Nina K. Ratmanova
- Department of Chemistry; Lomonosov Moscow State University; Leninsky Gory 1/3 119991 Moscow Russia
| | - Anton M. Novoselov
- Department of Chemistry; Lomonosov Moscow State University; Leninsky Gory 1/3 119991 Moscow Russia
| | - Dmitry S. Belov
- Department of Chemistry; Lomonosov Moscow State University; Leninsky Gory 1/3 119991 Moscow Russia
| | - Irina F. Seregina
- Department of Chemistry; Lomonosov Moscow State University; Leninsky Gory 1/3 119991 Moscow Russia
| | - Alexander V. Kurkin
- Department of Chemistry; Lomonosov Moscow State University; Leninsky Gory 1/3 119991 Moscow Russia
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19
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Abstract
The preparation, structure, and chemistry of hypervalent iodine compounds are reviewed with emphasis on their synthetic application. Compounds of iodine possess reactivity similar to that of transition metals, but have the advantage of environmental sustainability and efficient utilization of natural resources. These compounds are widely used in organic synthesis as selective oxidants and environmentally friendly reagents. Synthetic uses of hypervalent iodine reagents in halogenation reactions, various oxidations, rearrangements, aminations, C-C bond-forming reactions, and transition metal-catalyzed reactions are summarized and discussed. Recent discovery of hypervalent catalytic systems and recyclable reagents, and the development of new enantioselective reactions using chiral hypervalent iodine compounds represent a particularly important achievement in the field of hypervalent iodine chemistry. One of the goals of this Review is to attract the attention of the scientific community as to the benefits of using hypervalent iodine compounds as an environmentally sustainable alternative to heavy metals.
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Affiliation(s)
- Akira Yoshimura
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
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20
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Yang X, Wang Y, Hu F, Kan X, Yang C, Liu J, Liu P, Zhang Q. Base-promoted intramolecular cyclization of N-alkyl, N-propargylic β-enaminones for the synthesis of polysubstituted pyrroles. RSC Adv 2016. [DOI: 10.1039/c6ra14897b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
An efficient, mild, metal-free, base-mediated intramolecular cyclization of N-alkyl, N-propargylic β-enaminones has been realized for the generation of polysubstituted pyrrole derivatives.
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Affiliation(s)
- Xiaobing Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Yang Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Fangzhong Hu
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Xiaoli Kan
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Chiming Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Jiahui Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Pei Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Qichun Zhang
- School of Materials Science Engineering
- Nanyang Technological University
- Singapore 637371
- Singapore
- Division of Chemistry and Biological Chemistry
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21
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Howard JK, Rihak KJ, Bissember AC, Smith JA. The Oxidation of Pyrrole. Chem Asian J 2015; 11:155-67. [DOI: 10.1002/asia.201500659] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Indexed: 01/16/2023]
Affiliation(s)
- James K. Howard
- School of Chemistry; University of Leeds; Woodhouse Lane Leeds LS2 9JT UK
| | - Kieran J. Rihak
- School of Physical Sciences-Chemistry; University of Tasmania, Hobart; Tasmania 7001 Australia
| | - Alex C. Bissember
- School of Physical Sciences-Chemistry; University of Tasmania, Hobart; Tasmania 7001 Australia
| | - Jason A. Smith
- School of Physical Sciences-Chemistry; University of Tasmania, Hobart; Tasmania 7001 Australia
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22
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Pelkey ET, Pelkey SJ, Greger JG. De Novo Synthesis of 3-Pyrrolin-2-Ones. ADVANCES IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/bs.aihch.2015.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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23
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Kancharla P, Lu W, Salem SM, Kelly JX, Reynolds KA. Stereospecific synthesis of 23-hydroxyundecylprodiginines and analogues and conversion to antimalarial premarineosins via a Rieske oxygenase catalyzed bicyclization. J Org Chem 2014; 79:11674-89. [PMID: 25380131 PMCID: PMC4260665 DOI: 10.1021/jo5023553] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Indexed: 12/11/2022]
Abstract
Facile and highly efficient synthetic routes for the synthesis of (S)- and (R)-23-hydroxyundecylprodiginines ((23S)-2, and (23R)-2), 23-ketoundecylprodiginine (3), and deuterium-labeled 23-hydroxyundecylprodiginine ([23-d]-2) have been developed. We demonstrated a novel Rieske oxygenase MarG catalyzed stereoselective bicyclization of (23S)-2 to premarineosin A (4), a key step in the tailoring process of the biosynthesis of marineosins, using a marG heterologous expression system. The synthesis of various A-C-ring functionalized prodiginines 32-41 was achieved to investigate the substrate promiscuity of MarG. The two analogues 32 and 33 exhibit antimalarial and cytotoxic activities stronger than those of the marineosin intermediate 2, against Plasmodium falciparum strains (CQ(S)-D6, CQ(R)-Dd2, and 7G8) and hepatocellular HepG2 cancer cell line, respectively. Feeding of 34-36 to Streptomyces venezuelae expressing marG led to production of novel premarineosins, paving a way for the production of marineosin analogues via a combinatorial synthetic/biosynthetic approach. This study presents the first example of oxidative bicyclization mediated by a Rieske oxygenase.
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Affiliation(s)
- Papireddy Kancharla
- Department
of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Wanli Lu
- Department
of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Shaimaa M. Salem
- Department
of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Jane Xu Kelly
- Department
of Chemistry, Portland State University, Portland, Oregon 97201, United States
- Department
of Veterans Affairs Medical Center, Portland, Oregon 97239, United States
| | - Kevin A. Reynolds
- Department
of Chemistry, Portland State University, Portland, Oregon 97201, United States
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24
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In(OTf)3-mediated dehydrative annulation of β-ketothioamides with phenylglyoxal: one-pot access to diversely functionalized pyrrol-2-thiones. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.062] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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Kim SH, Kim KH, Lim JW, Kim JN. An expedient synthesis of pyrrole-2-phosphonates via direct oxidative phosphorylation and γ-hydroxy-γ-butyrolactams from pyrroles. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.11.082] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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