1
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Petruncio G, Shellnutt Z, Elahi-Mohassel S, Alishetty S, Paige M. Skipped dienes in natural product synthesis. Nat Prod Rep 2021; 38:2187-2213. [PMID: 34913051 DOI: 10.1039/d1np00012h] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Covering: 2000-2020The 1,4-diene motif, also known as a skipped diene, is widespread across various classes of natural products including alkaloids, fatty acids, terpenoids, and polyketides as part of either the finalized structure or a biosynthetic intermediate. The prevalence of this nonconjugated diene system in nature has resulted in numerous encounters in the total synthesis literature. However, skipped dienes have not been extensively reviewed, which could be attributed to overshadowing by the more recognized 1,3-diene system. In this review, we aim to highlight the relevance of skipped dienes in natural products through the lens of total synthesis. Subjects that will be covered include nomenclature, structural properties, prevalence in natural products, synthetic strategies and the future direction of the field.
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Affiliation(s)
- Greg Petruncio
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, Virginia 20110, USA.
| | - Zachary Shellnutt
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, Virginia 20110, USA.
| | - Synah Elahi-Mohassel
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, Virginia 20110, USA.
| | - Suman Alishetty
- Department of Bioengineering, George Mason University, 10920 George Mason Circle, Manassas, Virginia 20110, USA
| | - Mikell Paige
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, Virginia 20110, USA.
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2
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Wang L, Han H, Gu L, Zhang W, Zhao J, Wang Q. Skeletal remodeling of chalcone-based pyridinium salts to access isoindoline polycycles and their bridged derivatives. Chem Sci 2021; 12:15389-15398. [PMID: 34976360 PMCID: PMC8635221 DOI: 10.1039/d1sc05741c] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 11/05/2021] [Indexed: 12/12/2022] Open
Abstract
Simultaneous deconstructive ring-opening and skeletal reconstruction of an inert, aromatic pyridinium ring is of great importance in synthetic communities. However, research in this area is still in its infancy. Here, a skeletal re-modeling strategy was developed to transform chalcone-based pyridinium salts into structurally intriguing polycyclic isoindolines through a dearomative ring-opening/ring-closing sequence. Two distinct driving forces for the deconstruction of the pyridinium core were involved in these transformations. One was the unprecedented harnessing of the instability of in situ generated cyclic β-aminoketones, and the other was the instability of the resultant N,N-ketals. The desired isoindoline polycycles could undergo the Wittig reaction with various phosphorus ylides to achieve structural diversity and complexity. Notably, by tuning the Wittig conditions by addition of one equivalent of base, an additional bridged ring was introduced. A plausible mechanism was proposed on the basis of control experiments and theoretical calculations.
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Affiliation(s)
- Lele Wang
- College of Chemistry and Chemical Engineering, Henan University Kaifeng 475004 China
| | - Huabin Han
- College of Chemistry and Chemical Engineering, Henan University Kaifeng 475004 China
| | - Lijie Gu
- College of Chemistry and Chemical Engineering, Henan University Kaifeng 475004 China
| | - Wenjing Zhang
- Green Catalysis Center, College of Chemistry, Zhengzhou University Zhengzhou 450001 China
| | - Junwei Zhao
- College of Chemistry and Chemical Engineering, Henan University Kaifeng 475004 China
| | - Qilin Wang
- College of Chemistry and Chemical Engineering, Henan University Kaifeng 475004 China
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3
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Zhao S, Sirasani G, Andrade RB. Aspidosperma and Strychnos alkaloids: Chemistry and biology. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2021; 86:1-143. [PMID: 34565505 DOI: 10.1016/bs.alkal.2021.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Of Nature's nearly 3000 unique monoterpene indole alkaloids derived from tryptophan, those members belonging to the Aspidosperma and Strychnos families continue to impact the fields of natural products (i.e., isolation, structure determination, biosynthesis) and organic chemistry (i.e., chemical synthesis, methodology development) among others. This review covers the biological activity (Section 2), biosynthesis (Section 3), and synthesis of both classical and novel Aspidosperma (Section 4), Strychnos (Section 5), and selected bis-indole (Section 6) alkaloids. Technological advancements in genetic sequencing and bioinformatics have deepened our understanding of how Nature assembles these intriguing molecules. The proliferation of innovative synthetic strategies and tactics for the synthesis of the alkaloids covered in this review, which include contributions from over fifty research groups from around the world, are a testament to the creative power and technical skills of synthetic organic chemists. To be sure, Nature-the Supreme molecular architect and source of a dazzling array of irresistible chemical logic puzzles-continues to inspire scientists across multiple disciplines and will certainly continue to do so for the foreseeable future.
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Affiliation(s)
- Senzhi Zhao
- Department of Chemistry, Temple University, Philadelphia, PA, United States
| | | | - Rodrigo B Andrade
- Department of Chemistry, Temple University, Philadelphia, PA, United States
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4
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Tong G, Baker MA, Shenvi RA. Change the channel: CysLoop receptor antagonists from nature. PEST MANAGEMENT SCIENCE 2021; 77:3650-3662. [PMID: 33135373 PMCID: PMC8087819 DOI: 10.1002/ps.6166] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/27/2020] [Accepted: 11/01/2020] [Indexed: 05/04/2023]
Abstract
Vertebrate and invertebrate ligand-gated ion channels (LGICs) exhibit significant structural homology and often share ligands. As a result, ligands with activity against one class can be brought to bear against another, including for development as insecticides. Receptor selectivity, metabolism and distribution must then be optimized using chemical synthesis. Here we review natural products (NPs) that ligate and inhibit the Cys-loop family of LGICs, which benefit from the unique physicochemical properties of natural product space but often present a high synthetic burden. Recent advances in chemical synthesis, however, have opened practical entries into these complex structures, several of which are highlighted. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Guanghu Tong
- Department of Chemistry, Scripps Research, La Jolla, CA, USA
| | - Meghan A Baker
- Department of Chemistry, Scripps Research, La Jolla, CA, USA
| | - Ryan A Shenvi
- Department of Chemistry, Scripps Research, La Jolla, CA, USA
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5
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Wang P, Chen J, He W, Song J, Song H, Wei H, Xie W. An Asymmetric Synthesis of (+)-Isostrychnine Based on Catalytic Asymmetric Tandem Double Michael Addition. Org Lett 2021; 23:5476-5479. [PMID: 34213916 DOI: 10.1021/acs.orglett.1c01828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, a concise asymmetric synthesis of (+)-isostrychnine is achieved in nine longest-linear steps with a 16% overall yield. The key features of this synthesis include the catalytic asymmetric tandem double Michael addition of a tryptamine-derived oxindole to an alkynone to facilely forge the A/B/C ring framework, a one-pot intramolecular dehydrative condensation/lactamization reaction to efficiently establish the E/G ring system, and an allylic diazene rearrangement to introduce the pivotal olefin for the subsequent intramolecular Heck reaction.
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Affiliation(s)
- Pengyan Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | - Junhan Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | - Weigang He
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | - Jiacheng Song
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | - Hengqian Song
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | - Hongbo Wei
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China.,Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, China
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6
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Xie J, Zou X, Sang C, Song M, Chen Q, Zhang J. Three new monoterpenoid indole alkaloids from Alstonia rostrata. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Curpanen S, Poli G, Oble. J, Perez‐Luna A. C(sp
2
)−Si Bond Functionalization through Intramolecular Activation by Alkoxides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001458] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sebastien Curpanen
- Sorbonne Université Faculté des Sciences et Ingénierie CNRS Institut Parisien de Chimie Moléculaire, IPCM 4 place Jussieu 75005 Paris France
| | - Giovanni Poli
- Sorbonne Université Faculté des Sciences et Ingénierie CNRS Institut Parisien de Chimie Moléculaire, IPCM 4 place Jussieu 75005 Paris France
| | - Julie Oble.
- Sorbonne Université Faculté des Sciences et Ingénierie CNRS Institut Parisien de Chimie Moléculaire, IPCM 4 place Jussieu 75005 Paris France
| | - Alejandro Perez‐Luna
- Sorbonne Université Faculté des Sciences et Ingénierie CNRS Institut Parisien de Chimie Moléculaire, IPCM 4 place Jussieu 75005 Paris France
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8
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Hutchings‐Goetz LS, Yang C, Fyfe JWB, Snaddon TN. Enantioselective Syntheses of
Strychnos
and
Chelidonium
Alkaloids through Regio‐ and Stereocontrolled Cooperative Catalysis. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005151] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Luke S. Hutchings‐Goetz
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Chao Yang
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - James W. B. Fyfe
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Thomas N. Snaddon
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
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9
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Hosoya K, Iida K, Odagi M, Nagasawa K. Synthesis of Hydrocarbazole Derivatives by Oxidative Dearomative Cyclization of Diarylamines Using a Hypervalent Iodine Reagent. J Org Chem 2020; 85:11980-11988. [PMID: 32830499 DOI: 10.1021/acs.joc.0c01760] [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
Hydrocarbazole derivatives bearing a quaternary stereogenic center at C4a were synthesized by means of intramolecular oxidative dearomatization of diarylamines using hypervalent iodine in moderate to good yields. The hydrocarbazole bearing a cyclohexadienone moiety was further converted into the tetracyclic skeletons of Aspidosperma and akuammiline-type alkaloids via regioselective aza-Michael reaction at C4 and at C9a, respectively.
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Affiliation(s)
- Keisuke Hosoya
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Ko-ganei City, Tokyo 184-8588, Japan
| | - Keita Iida
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Ko-ganei City, Tokyo 184-8588, Japan
| | - Minami Odagi
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Ko-ganei City, Tokyo 184-8588, Japan
| | - Kazuo Nagasawa
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Ko-ganei City, Tokyo 184-8588, Japan
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10
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Jarret M, Tap A, Turpin V, Denizot N, Kouklovsky C, Poupon E, Evanno L, Vincent G. Bioinspired Divergent Oxidative Cyclizations of Geissoschizine: Total Synthesis of (–)‐17‐nor‐Excelsinidine, (+)‐16‐
epi
‐Pleiocarpamine, (+)‐16‐Hydroxymethyl‐Pleiocarpamine and (+)‐Taberdivarine H. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000962] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Maxime Jarret
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) Université Paris‐Saclay, CNRS 91405 Orsay France
| | - Aurélien Tap
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) Université Paris‐Saclay, CNRS 91405 Orsay France
| | - Victor Turpin
- Biomolécules: Conception, Isolement et Synthèse (BioCIS) Université Paris‐Saclay, CNRS, BioCIS 92290 Châtenay‐Malabry France
| | - Natacha Denizot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) Université Paris‐Saclay, CNRS 91405 Orsay France
| | - Cyrille Kouklovsky
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) Université Paris‐Saclay, CNRS 91405 Orsay France
| | - Erwan Poupon
- Biomolécules: Conception, Isolement et Synthèse (BioCIS) Université Paris‐Saclay, CNRS, BioCIS 92290 Châtenay‐Malabry France
| | - Laurent Evanno
- Biomolécules: Conception, Isolement et Synthèse (BioCIS) Université Paris‐Saclay, CNRS, BioCIS 92290 Châtenay‐Malabry France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) Université Paris‐Saclay, CNRS 91405 Orsay France
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11
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Hutchings‐Goetz LS, Yang C, Fyfe JWB, Snaddon TN. Enantioselective Syntheses of
Strychnos
and
Chelidonium
Alkaloids through Regio‐ and Stereocontrolled Cooperative Catalysis. Angew Chem Int Ed Engl 2020; 59:17556-17564. [DOI: 10.1002/anie.202005151] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Luke S. Hutchings‐Goetz
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Chao Yang
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - James W. B. Fyfe
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Thomas N. Snaddon
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
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12
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Merouane A, Mostefai A, Hadji D, Rahmouni A, Bouchekara M, Ramdani A, Taleb S. Theoretical insights into the static chemical reactivity and NLO properties of some conjugated carbonyl compounds: case of 5-aminopenta-2,4-dienal derivatives. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02653-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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13
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Delayre B, Piemontesi C, Wang Q, Zhu J. TiCl
3
‐Mediated Synthesis of 2,3,3‐Trisubstituted Indolenines: Total Synthesis of (+)‐1,2‐Dehydroaspidospermidine, (+)‐Condyfoline, and (−)‐Tubifoline. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005380] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Bastien Delayre
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Cyril Piemontesi
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
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14
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Delayre B, Piemontesi C, Wang Q, Zhu J. TiCl
3
‐Mediated Synthesis of 2,3,3‐Trisubstituted Indolenines: Total Synthesis of (+)‐1,2‐Dehydroaspidospermidine, (+)‐Condyfoline, and (−)‐Tubifoline. Angew Chem Int Ed Engl 2020; 59:13990-13997. [DOI: 10.1002/anie.202005380] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Indexed: 01/08/2023]
Affiliation(s)
- Bastien Delayre
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Cyril Piemontesi
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
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15
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Kalshetti MG, Argade NP. The indole-based subincanadine alkaloids and their biogenetic congeners. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2020; 83:187-223. [PMID: 32098650 DOI: 10.1016/bs.alkal.2019.12.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The tryptamine-derived polycyclic bridged bioactive indole alkaloids subincanadines A-G were isolated in 2002 by Ohsaki and coworkers from the bark of the Brazilian medicinal plant Aspidosperma subincanum. Kobayashi proposed that subincanadines D-F could be biosynthetically resulting from stemmadenine via two different pathways and, furthermore, that the subincanadines A-C could be biogenetically resulting from subincanadines D and E. Kam and coworkers, in their focused efforts, isolated five indole alkaloids from Malaysian Kopsia arborea species, namely valparicine, apparicine, arboridinine, arborisidine, and arbornamine in combination with subincanadine E. On the basis of structural features, it has been proposed and proved in some examples that subincanadine E is a biogenetic precursor of these five different bioactive indole alkaloids bearing complex structural architectures. All important information on isolation, characterization, bioactivity, probable biogenetic pathways, and more specifically racemic and enantioselective total synthesis of subincanadine alkaloids and their biogenetic congeners are summarized in the present chapter. Special importance is given to the total synthesis and the synthetic strategies intended therein, comprising a set of main reactions.
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16
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Chen G, Chen S, Luo J, Mao X, Chan AS, Sun RW, Liu Y. Tandem Cross‐Coupling/Spirocyclization/Mannich‐Type Reactions of 3‐(2‐Isocyanoethyl)indoles with Diazo Compounds toward Polycyclic Spiroindolines. Angew Chem Int Ed Engl 2020; 59:614-621. [DOI: 10.1002/anie.201911614] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/05/2019] [Indexed: 01/11/2023]
Affiliation(s)
- Guo‐Shu Chen
- School of Chemistry and Chemical EngineeringGuangzhou University 230 Wai Huan Xi Road Guangzhou 510006 China
| | - Shu‐Jie Chen
- School of Chemistry and Chemical EngineeringGuangzhou University 230 Wai Huan Xi Road Guangzhou 510006 China
| | - Jian Luo
- School of Chemistry and Chemical EngineeringGuangzhou University 230 Wai Huan Xi Road Guangzhou 510006 China
| | - Xiang‐Yu Mao
- School of Chemistry and Chemical EngineeringGuangzhou University 230 Wai Huan Xi Road Guangzhou 510006 China
| | - Albert Sun‐Chi Chan
- Guangzhou Lee & Man Technology Company LimitedRoom 401, Block A 8 Huanshi Avenue South, Nansha Guangzhou China
| | - Raymond Wai‐Yin Sun
- Guangzhou Lee & Man Technology Company LimitedRoom 401, Block A 8 Huanshi Avenue South, Nansha Guangzhou China
| | - Yun‐Lin Liu
- School of Chemistry and Chemical EngineeringGuangzhou University 230 Wai Huan Xi Road Guangzhou 510006 China
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17
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Zhen L, Tong S, Zhu J, Wang MX. Fused N-Heterocycles with Contiguous Stereogenic Centers Accessed by an Asymmetric Catalytic Cascade Reaction of Tertiary Enamides. Chemistry 2020; 26:401-405. [PMID: 31602706 DOI: 10.1002/chem.201904596] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Indexed: 12/12/2022]
Abstract
We report in this article a cascade reaction strategy for the synthesis of complex N-heterocyclic compounds with contiguous and tetrasubstituted stereogenic carbons. Under the sequential catalysis of a chiral binol-Ti complex and BF3 , cyclopentanone-derived tertiary enamides undergo an enantioselective enamine addition to ketone carbonyls followed by diastereoselective trapping of the resulting acyliminiums by electron-rich aryl moieties to furnish four- and five-membered ring-fused N-heterocyclic products as the sole diastereomers in high yields with up to 99 % ee.
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Affiliation(s)
- Li Zhen
- Key Laboratory of Bioorganic Phosphorous and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, P. R. China
| | - Shuo Tong
- Key Laboratory of Bioorganic Phosphorous and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, P. R. China
| | - Jieping Zhu
- Laboratory of Synthesis and Natural products, Institute of Chemical Sciences and Engineering, Ecole Poltechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Mei-Xiang Wang
- Key Laboratory of Bioorganic Phosphorous and Chemical Biology (Ministry of Education), Tsinghua University, Beijing, 100084, P. R. China
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18
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He W, Wang P, Chen J, Xie W. Recent progress in the total synthesis of Strychnos alkaloids. Org Biomol Chem 2020; 18:1046-1056. [DOI: 10.1039/c9ob02627d] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The recent synthetic approaches toward Strychnos alkaloids are summarized, including novel synthetic methodologies and strategies.
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Affiliation(s)
- Weigang He
- School of Biology and Food Engineering
- Changshu Institute of Technology
- Changshu 215500
- China
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
| | - Pengyan Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Junhan Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
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19
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Chen G, Chen S, Luo J, Mao X, Chan AS, Sun RW, Liu Y. Tandem Cross‐Coupling/Spirocyclization/Mannich‐Type Reactions of 3‐(2‐Isocyanoethyl)indoles with Diazo Compounds toward Polycyclic Spiroindolines. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911614] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Guo‐Shu Chen
- School of Chemistry and Chemical EngineeringGuangzhou University 230 Wai Huan Xi Road Guangzhou 510006 China
| | - Shu‐Jie Chen
- School of Chemistry and Chemical EngineeringGuangzhou University 230 Wai Huan Xi Road Guangzhou 510006 China
| | - Jian Luo
- School of Chemistry and Chemical EngineeringGuangzhou University 230 Wai Huan Xi Road Guangzhou 510006 China
| | - Xiang‐Yu Mao
- School of Chemistry and Chemical EngineeringGuangzhou University 230 Wai Huan Xi Road Guangzhou 510006 China
| | - Albert Sun‐Chi Chan
- Guangzhou Lee & Man Technology Company LimitedRoom 401, Block A 8 Huanshi Avenue South, Nansha Guangzhou China
| | - Raymond Wai‐Yin Sun
- Guangzhou Lee & Man Technology Company LimitedRoom 401, Block A 8 Huanshi Avenue South, Nansha Guangzhou China
| | - Yun‐Lin Liu
- School of Chemistry and Chemical EngineeringGuangzhou University 230 Wai Huan Xi Road Guangzhou 510006 China
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20
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Smolobochkin AV, Gazizov AS, Burilov AR, Pudovik MA, Sinyashin OG. Ring opening reactions of nitrogen heterocycles. RUSSIAN CHEMICAL REVIEWS 2019. [DOI: 10.1070/rcr4891] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Beemelmanns C, Nitsch D, Bentz C, Reissig HU. Stereoselective Cascade Cyclizations with Samarium Diiodide to Tetracyclic Indolines: Precursors of Fluorostrychnines and Brucine. Chemistry 2019; 25:8780-8789. [PMID: 31033048 DOI: 10.1002/chem.201900087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 04/25/2019] [Indexed: 12/16/2022]
Abstract
A series of γ-indolylketones with fluorine, cyano or alkoxy substituents at the benzene moiety was prepared and subjected to samarium diiodide-promoted cyclization reactions. The desired dearomatizing ketyl cascade reaction forming two new rings proceeded in all cases with high diastereoselectivity, but with differing product distribution. In most cases, the desired annulated tetracyclic compounds were obtained in moderate to good yields, but as second product tetracyclic spirolactones were isolated in up to 29 % yield. The reaction rate was influenced by the substituents at the benzene moiety of the substrate as expected, with electron-accepting groups accelerating and electron-donating groups decelerating the cyclization process. In case of a difluoro-substituted γ-indolylketone a partial defluorination was observed. The intermediate samarium enolate of the tetracyclic products could be trapped by adding reactive alkylating agents as electrophiles delivering products with quarternary carbons. In the case of a dimethoxy-substituted tetracyclic cyclization product a subsequent reductive amination stereoselectively provided a pentacyclic compound that was subsequently N-protected and subjected to a regioselective elimination. The obtained functionalized pentacyclic product should be convertible into the alkaloid brucine by four well-established steps. Overall, the presented report shows that functionalized tetracyclic compounds with different substituents are rapidly available with the samarium diiodide cascade cyclization as crucial step. Hence, analogues of the landmark alkaloid strychnine, for example, with specific fluorine substitutions, should be easily accessible.
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Affiliation(s)
- Christine Beemelmanns
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany.,Leibniz-Institut für Naturstoff-Forschung und Infektionsbiologie, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Dominik Nitsch
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Christoph Bentz
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Hans-Ulrich Reissig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
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22
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Saya JM, Ruijter E, Orru RVA. Total Synthesis of
Aspidosperma
and
Strychnos
Alkaloids through Indole Dearomatization. Chemistry 2019; 25:8916-8935. [DOI: 10.1002/chem.201901130] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Indexed: 01/07/2023]
Affiliation(s)
- Jordy M. Saya
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute for Molecules, Medicines & SystemsVrije Universiteit Amsterdam De Boelelaan 1108 1081 HZ Amsterdam The Netherlands
| | - Eelco Ruijter
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute for Molecules, Medicines & SystemsVrije Universiteit Amsterdam De Boelelaan 1108 1081 HZ Amsterdam The Netherlands
| | - Romano V. A. Orru
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute for Molecules, Medicines & SystemsVrije Universiteit Amsterdam De Boelelaan 1108 1081 HZ Amsterdam The Netherlands
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23
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Kalshetti MG, Argade NP. Progress in total synthesis of subincanadine alkaloids and their congeners. Org Biomol Chem 2019; 17:745-761. [PMID: 30574985 DOI: 10.1039/c8ob02565g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A concise account of isolation, characterization, bioactivity, plausible biogenetic pathways, and most importantly, total synthesis of structurally fascinating and biologically imperious indole-based subincanadine alkaloids and their biogenetic congeners are described in the present review with special emphasis on total synthesis and therein an involved set of key reactions.
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Affiliation(s)
- Manojkumar G Kalshetti
- Division of Organic Chemistry, National Chemical Laboratory (CSIR), Pune 411 008, India.
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24
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Gao YT, Jin XY, Liu Q, Liu AD, Cheng L, Wang D, Liu L. Iodide/H₂O₂ Catalyzed Intramolecular Oxidative Amination for the Synthesis of 3,2'-Pyrrolidinyl Spirooxindoles. Molecules 2018; 23:molecules23092265. [PMID: 30189635 PMCID: PMC6225319 DOI: 10.3390/molecules23092265] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 08/21/2018] [Accepted: 08/24/2018] [Indexed: 12/13/2022] Open
Abstract
An ammonium iodide/hydrogen peroxide-mediated intramolecular oxidative amination of 3-aminoalkyl-2-oxindoles was achieved, affording the corresponding 3,2'-pyrrolidinyl spirooxindoles and their 6- or 7-membered analogous in moderate to high yields. This metal-free procedure features very mild reaction conditions, non-toxicity and easily handled hydrogen peroxide as a clean oxidant.
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Affiliation(s)
- Yu-Ting Gao
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xiao-Yang Jin
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Qi Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - An-Di Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Liang Cheng
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Dong Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Li Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
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25
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Wang Y, Xie F, Lin B, Cheng M, Liu Y. Synthetic Approaches to Tetracyclic Indolines as Versatile Building Blocks of Diverse Indole Alkaloids. Chemistry 2018; 24:14302-14315. [DOI: 10.1002/chem.201800775] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 03/29/2018] [Indexed: 01/14/2023]
Affiliation(s)
- Yanshi Wang
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
| | - Fukai Xie
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
- Wuya College of Innovation; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
| | - Bin Lin
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
- Wuya College of Innovation; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
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26
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Pancholi AK, Iacobini GP, Clarkson GJ, Porter DW, Shipman M. Synthesis of 4,5-Diazaspiro[2.3]hexanes and 1,2-Diazaspiro[3.3]heptanes as Hexahydropyridazine Analogues. J Org Chem 2018; 83:491-498. [PMID: 29183129 DOI: 10.1021/acs.joc.7b02622] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
4,5-Diazaspiro[2.3]hexanes are made by dihalocarbene addition across the exocyclic double bond of readily accessible 3-alkylidene-1,2-diazetidines. Using difluorocarbene, generated from TMSCF3/NaI, these spirocycles were produced in yields up to 97% by stereospecific addition across the alkene. Lower yields (up to 64%) were observed using more reactive dichlorocarbene, due to competitive insertion of the carbene into the N-N bond. Larger 1,2-diazaspiro[3.3]heptanes are produced by [2 + 2] cycloaddition of 3-alkylidene-1,2-diazetidines with tetracyanoethylene (TCNE) in up to 99% yield.
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Affiliation(s)
- Alpa K Pancholi
- Department of Chemistry, University of Warwick , Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Greg P Iacobini
- Department of Chemistry, University of Warwick , Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Guy J Clarkson
- Department of Chemistry, University of Warwick , Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - David W Porter
- Novartis Institutes for BioMedical Research, Horsham Research Centre , Wimblehurst Road, West Sussex, RH12 5AB, United Kingdom
| | - Michael Shipman
- Department of Chemistry, University of Warwick , Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
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27
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Li J, Ye Y, Zhang Y. Cycloaddition/annulation strategies for the construction of multisubstituted pyrrolidines and their applications in natural product synthesis. Org Chem Front 2018. [DOI: 10.1039/c7qo01077j] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Pyrrolidines are privileged substructures of numerous bioactive natural products and drugs.
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Affiliation(s)
- Jundong Li
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Yilin Ye
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Yandong Zhang
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
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28
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Sowmiah S, Esperança JMSS, Rebelo LPN, Afonso CAM. Pyridinium salts: from synthesis to reactivity and applications. Org Chem Front 2018. [DOI: 10.1039/c7qo00836h] [Citation(s) in RCA: 157] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review highlights the pyridinium salts in terms of their natural occurrence, synthesis, reactivity, biological properties, and diverse applications.
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Affiliation(s)
- Subbiah Sowmiah
- Instituto de Tecnologia Química e Biológica António Xavier
- Universidade Nova de Lisboa
- 2780-157 Oeiras
- Portugal
- Research Institute for Medicines (iMed.ULisboa)
| | - José M. S. S. Esperança
- Instituto de Tecnologia Química e Biológica António Xavier
- Universidade Nova de Lisboa
- 2780-157 Oeiras
- Portugal
- LAQV-REQUIMTE
| | - Luís P. N. Rebelo
- Instituto de Tecnologia Química e Biológica António Xavier
- Universidade Nova de Lisboa
- 2780-157 Oeiras
- Portugal
- LAQV-REQUIMTE
| | - Carlos A. M. Afonso
- Research Institute for Medicines (iMed.ULisboa)
- Faculty of Pharmacy
- Universidade de Lisboa
- 1649-009 Lisboa
- Portugal
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29
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Lee GS, Namkoong G, Park J, Chen DY. Total Synthesis of Strychnine. Chemistry 2017; 23:16189-16193. [DOI: 10.1002/chem.201704455] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Geun Seok Lee
- Department of Chemistry Seoul National University, Gwanak-1 Gwanak-ro, Gwanak-gu Seoul 151-742 South Korea
| | - Gil Namkoong
- Department of Chemistry Seoul National University, Gwanak-1 Gwanak-ro, Gwanak-gu Seoul 151-742 South Korea
| | - Jisook Park
- Department of Chemistry Seoul National University, Gwanak-1 Gwanak-ro, Gwanak-gu Seoul 151-742 South Korea
| | - David Y.‐K. Chen
- Department of Chemistry Seoul National University, Gwanak-1 Gwanak-ro, Gwanak-gu Seoul 151-742 South Korea
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30
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Tokunaga T, Watanabe B, Sato S, Kawamoto J, Kurihara T. Synthesis and Functional Assessment of a Novel Fatty Acid Probe, ω-Ethynyl Eicosapentaenoic Acid Analog, to Analyze the in Vivo Behavior of Eicosapentaenoic Acid. Bioconjug Chem 2017; 28:2077-2085. [PMID: 28682621 DOI: 10.1021/acs.bioconjchem.7b00235] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Eicosapentaenoic acid (EPA) is an ω-3 polyunsaturated fatty acid that plays various beneficial roles in organisms from bacteria to humans. Although its beneficial physiological functions are well-recognized, a molecular probe that enables the monitoring of its in vivo behavior without abolishing its native functions has not yet been developed. Here, we designed and synthesized an ω-ethynyl EPA analog (eEPA) as a tool for analyzing the in vivo behavior and function of EPA. eEPA has an ω-ethynyl group tag in place of the ω-methyl group of EPA. An ethynyl group has a characteristic Raman signal and can be visualized by Raman scattering microscopy. Moreover, this group can specifically react in situ with azide compounds, such as those with fluorescent group, via click chemistry. In this study, we first synthesized eEPA efficiently based on the following well-known strategies. To introduce four C-C double bonds, a coupling reaction between terminal acetylene and propargylic halide or tosylate was employed, and then, by simultaneous and stereoselective partial hydrogenation with P-2 nickel, the triple bonds were converted to cis double bonds. One double bond and an ω-terminal C-C triple bond were introduced by Wittig reaction with a phosphonium salt harboring an ethynyl group. Then, we evaluated the in vivo function of the resulting probe by using an EPA-producing bacterium, Shewanella livingstonensis Ac10. This cold-adapted bacterium inducibly produces EPA at low temperatures, and the EPA-deficient mutant (ΔEPA) shows growth retardation and abnormal morphology at low temperatures. When eEPA was exogenously supplemented to ΔEPA, eEPA was incorporated into the membrane phospholipids as an acyl chain, and the amount of eEPA was about 5% of the total fatty acids in the membrane, which is comparable to the amount of EPA in the membrane of the parent strain. Notably, by supplementation with eEPA, the growth retardation and abnormal morphology of ΔEPA were almost completely suppressed. These results indicated that eEPA mimics EPA well and is useful for analyzing the in vivo behavior of EPA.
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Affiliation(s)
- Tomohisa Tokunaga
- Institute for Chemical Research, Kyoto University , Uji, Kyoto 611-0011, Japan
| | - Bunta Watanabe
- Institute for Chemical Research, Kyoto University , Uji, Kyoto 611-0011, Japan
| | - Sho Sato
- Institute for Chemical Research, Kyoto University , Uji, Kyoto 611-0011, Japan
| | - Jun Kawamoto
- Institute for Chemical Research, Kyoto University , Uji, Kyoto 611-0011, Japan
| | - Tatsuo Kurihara
- Institute for Chemical Research, Kyoto University , Uji, Kyoto 611-0011, Japan
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31
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Hong AY, Vanderwal CD. A Sequential Cycloaddition Strategy for the Synthesis of Alsmaphorazine B Traces a Path Through a Family of Alstonia Alkaloids. Tetrahedron 2017; 73:4160-4171. [PMID: 28943664 PMCID: PMC5603193 DOI: 10.1016/j.tet.2016.11.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Driven by a new biogenetic hypothesis, the first total synthesis of alsmaphorazine B and several related indole alkaloids has been achieved. Numerous early approaches proved unsuccessful owing to unproductive side reactivity; nevertheless, they provided important clues that guided the evolution of our strategy. Critical to our success was a major improvement in our Zincke aldehyde cycloaddition strategy, which permitted the efficient gram-scale synthesis of akuammicine. The sequential chemoselective oxidations of akuammicine leading up to the key oxidative rearrangement also yielded several biogenetically related indole alkaloids en route to alsmaphorazine B.
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Affiliation(s)
- Allen Y. Hong
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697-2025, USA
| | - Christopher D. Vanderwal
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697-2025, USA
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32
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Li L, Aibibula P, Jia Q, Jia Y. Total Syntheses of Naucleamides A–C and E, Geissoschizine, Geissoschizol, (E)-Isositsirikine, and 16-epi-(E)-Isositsirikine. Org Lett 2017; 19:2642-2645. [DOI: 10.1021/acs.orglett.7b00983] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Lei Li
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Paruke Aibibula
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Qianlan Jia
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Yanxing Jia
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
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33
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Liu T, Sun J, Wang Q, Li L, Zhou MD. CuBr2
/TBHP-Promoted Selective Dibromination and Bromohydroxylation of (Diphenylphosphoryl)allenes. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700187] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tian Liu
- School of Chemistry and Materials Science; Liaoning Shihua University; Dandong Road 1 113001 Fushun P. R. China
| | - Jing Sun
- School of Chemistry and Materials Science; Liaoning Shihua University; Dandong Road 1 113001 Fushun P. R. China
| | - Qiang Wang
- School of Chemistry and Materials Science; Liaoning Shihua University; Dandong Road 1 113001 Fushun P. R. China
| | - Lei Li
- School of Chemistry and Materials Science; Liaoning Shihua University; Dandong Road 1 113001 Fushun P. R. China
| | - Ming-Dong Zhou
- School of Chemistry and Materials Science; Liaoning Shihua University; Dandong Road 1 113001 Fushun P. R. China
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34
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Müller G, Berkenbosch T, Benningshof JCJ, Stumpfe D, Bajorath J. Charting Biologically Relevant Spirocyclic Compound Space. Chemistry 2016; 23:703-710. [DOI: 10.1002/chem.201604714] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Gerhard Müller
- Mercachem; Kerkenbos 1013, 6546 BB Nijmegen, P.O. Box 6747 6503 GE Nijmegen The Netherlands
| | - Tim Berkenbosch
- Mercachem; Kerkenbos 1013, 6546 BB Nijmegen, P.O. Box 6747 6503 GE Nijmegen The Netherlands
| | - Jorg C. J. Benningshof
- Mercachem; Kerkenbos 1013, 6546 BB Nijmegen, P.O. Box 6747 6503 GE Nijmegen The Netherlands
| | - Dagmar Stumpfe
- Department of Life Science Informatics, B-IT, LIMES Program Unit Chemical Biology and Medicinal Chemistry; Rheinische Friedrich-Wilhelms-Universität; Dahlmannstr. 2 53113 Bonn Germany
| | - Jürgen Bajorath
- Department of Life Science Informatics, B-IT, LIMES Program Unit Chemical Biology and Medicinal Chemistry; Rheinische Friedrich-Wilhelms-Universität; Dahlmannstr. 2 53113 Bonn Germany
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35
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Facile synthesis of the azocino[4,3-b]indole framework of strychnopivotine and other Strychnos alkaloids. Chem Heterocycl Compd (N Y) 2016. [DOI: 10.1007/s10593-016-1860-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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36
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Maertens G, Canesi S. Synthesis of theStrychnosAlkaloid (−)-Strychnopivotine and Confirmation of its Absolute Configuration. Chemistry 2016; 22:7090-3. [DOI: 10.1002/chem.201601319] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Gaëtan Maertens
- Laboratoire de Méthodologie et Synthèse de; Produit Naturels; Université du Québec à Montréal, C.P.8888, Succ. Centre-Ville; Montréal H3C 3P8 Québec Canada
| | - Sylvain Canesi
- Laboratoire de Méthodologie et Synthèse de; Produit Naturels; Université du Québec à Montréal, C.P.8888, Succ. Centre-Ville; Montréal H3C 3P8 Québec Canada
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37
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Frihed TG, Fürstner A. Progress in the trans-Reduction and trans-Hydrometalation of Internal Alkynes. Applications to Natural Product Synthesis. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20150317] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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38
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Affiliation(s)
- Weiwu Ren
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304; 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304; 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304; 1015 Lausanne Switzerland
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39
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Abstract
The total synthesis of strictamine has been achieved in nine steps from a known enol triflate. Characteristic features of our approach included: a) creation of a C7 all-carbon quaternary stereocenter at an early synthetic stage; b) use of an N,N-dimethyl tertiary amine as a surrogate of the primary amine for the rapid build-up of a functionalized 2-azabicyclo[3,3,1]nonan-9-one skeleton (achieved by using a reaction sequence of α-bromination of the ketone, followed by a stereoconvergent intramolecular nucleophilic substitution reaction); and c) a late-stage construction of the indolenine unit.
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Affiliation(s)
- Weiwu Ren
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland.
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Kokkonda P, Brown KR, Seguin TJ, Wheeler SE, Vaddypally S, Zdilla MJ, Andrade RB. Biomimetic Total Syntheses of (−)-Leucoridines A and C through the Dimerization of (−)-Dihydrovalparicine. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505198] [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]
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41
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Ding M, Tong X, Li D, Liang K, Zhou A, Zuo Z, Xia C. Asymmetric synthesis of common aza-tricyclic core of various alkaloids. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.08.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kokkonda P, Brown KR, Seguin TJ, Wheeler SE, Vaddypally S, Zdilla MJ, Andrade RB. Biomimetic Total Syntheses of (-)-Leucoridines A and C through the Dimerization of (-)-Dihydrovalparicine. Angew Chem Int Ed Engl 2015; 54:12632-5. [PMID: 26315453 DOI: 10.1002/anie.201505198] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 07/23/2015] [Indexed: 12/11/2022]
Abstract
Concise biomimetic syntheses of the Strychnos-Strychnos-type bis-indole alkaloids (-)-leucoridine A (1) and C (2) were accomplished through the biomimetic dimerization of (-)-dihydrovalparicine (3). En route to 3, the known alkaloids (+)-geissoschizoline (8) and (-)-dehydrogeissoschizoline (10) were also prepared. DFT calculations were employed to elucidate the mechanism, which favors a stepwise aza-Michael/spirocyclization sequence over the alternate hetero-Diels-Alder cycloaddition reaction.
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Affiliation(s)
- Praveen Kokkonda
- Department of Chemistry, Temple University, Philadelphia, PA 19122 (USA) https://www.cst.temple.edu/∼randrade
| | - Keaon R Brown
- Department of Chemistry, Temple University, Philadelphia, PA 19122 (USA) https://www.cst.temple.edu/∼randrade
| | - Trevor J Seguin
- Department of Chemistry, Texas A & M University, College Station, TX 77843 (USA)
| | - Steven E Wheeler
- Department of Chemistry, Texas A & M University, College Station, TX 77843 (USA)
| | - Shivaiah Vaddypally
- Department of Chemistry, Temple University, Philadelphia, PA 19122 (USA) https://www.cst.temple.edu/∼randrade
| | - Michael J Zdilla
- Department of Chemistry, Temple University, Philadelphia, PA 19122 (USA) https://www.cst.temple.edu/∼randrade
| | - Rodrigo B Andrade
- Department of Chemistry, Temple University, Philadelphia, PA 19122 (USA) https://www.cst.temple.edu/∼randrade.
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Hong AY, Vanderwal CD. A synthesis of alsmaphorazine B demonstrates the chemical feasibility of a new biogenetic hypothesis. J Am Chem Soc 2015; 137:7306-9. [PMID: 26034815 PMCID: PMC4477012 DOI: 10.1021/jacs.5b04686] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An N-oxide fragmentation/hydroxylamine oxidation/intramolecular 1,3-dipolar cycloaddition cascade efficiently converted an oxidized congener of akuammicine into the complex, hexacyclic architecture of the alsmaphorazine alkaloids. This dramatic structural change shows the chemical feasibility of our novel proposal for alsmaphorazine biogenesis. Critical to these endeavors was a marked improvement in our previously reported Zincke aldehyde cycloaddition approach to indole alkaloids, which permitted the gram-scale synthesis of akuammicine. The chemoselective oxidations of akuammicine leading up to the key rearrangement also generated several biogenetically related alkaloids of the alstolucine and alpneumine families.
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Affiliation(s)
- Allen Y. Hong
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
| | - Christopher D. Vanderwal
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
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Nolsøe JMJ, Aursnes M, Tungen JE, Hansen TV. Dienals Derived from Pyridinium Salts and Their Subsequent Application in Natural Product Synthesis. J Org Chem 2015; 80:5377-85. [DOI: 10.1021/acs.joc.5b00879] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jens M. J. Nolsøe
- School of Pharmacy, Department
of Pharmaceutical Chemistry, University of Oslo, P.O. Box 1068 Blindern, N-0316 Oslo, Norway
| | - Marius Aursnes
- School of Pharmacy, Department
of Pharmaceutical Chemistry, University of Oslo, P.O. Box 1068 Blindern, N-0316 Oslo, Norway
| | - Jørn E. Tungen
- School of Pharmacy, Department
of Pharmaceutical Chemistry, University of Oslo, P.O. Box 1068 Blindern, N-0316 Oslo, Norway
| | - Trond V. Hansen
- School of Pharmacy, Department
of Pharmaceutical Chemistry, University of Oslo, P.O. Box 1068 Blindern, N-0316 Oslo, Norway
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Jacquemot G, Maertens G, Canesi S. Isostrychnine Synthesis Mediated by Hypervalent Iodine Reagent. Chemistry 2015; 21:7713-5. [DOI: 10.1002/chem.201500185] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Indexed: 12/24/2022]
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Ishikura M, Abe T, Choshi T, Hibino S. Simple indole alkaloids and those with a nonrearranged monoterpenoid unit. Nat Prod Rep 2015; 32:1389-471. [DOI: 10.1039/c5np00032g] [Citation(s) in RCA: 160] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review summarizes the isolation, structure determination, total syntheses and biological activities of simple indole alkaloids and those with a nonrearranged monoterpenoid unit, with literature coverage from 2012 to 2013.
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Affiliation(s)
- Minoru Ishikura
- School of Pharmaceutical Sciences
- Health Sciences University of Hokkaido
- Ishikari-Tobetsu
- Japan
| | - Takumi Abe
- School of Pharmaceutical Sciences
- Health Sciences University of Hokkaido
- Ishikari-Tobetsu
- Japan
| | - Tominari Choshi
- Graduate School of Pharmacy & Pharmaceutical Sciences
- Faculty of Pharmacy & Pharmaceutical Sciences
- Fukuyama University
- Fukuyama
- Japan
| | - Satoshi Hibino
- Graduate School of Pharmacy & Pharmaceutical Sciences
- Faculty of Pharmacy & Pharmaceutical Sciences
- Fukuyama University
- Fukuyama
- Japan
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50
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Ando M, Sasaki M, Miyashita I, Takeda K. Formation of 2-Cyano-2-siloxyvinylallenes via Cyanide-Induced Brook Rearrangement in γ-Bromo-α,β,γ,δ-unsaturated Acylsilanes. J Org Chem 2014; 80:247-55. [DOI: 10.1021/jo502323v] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Masafumi Ando
- Department of Synthetic Organic Chemistry, Institute of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553, Japan
| | - Michiko Sasaki
- Department of Synthetic Organic Chemistry, Institute of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553, Japan
| | - Izumi Miyashita
- Department of Synthetic Organic Chemistry, Institute of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553, Japan
| | - Kei Takeda
- Department of Synthetic Organic Chemistry, Institute of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553, Japan
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