1
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Tan S, Zard SZ, Pham LN, Coote ML, Banwell MG, Lan P, White LV. Short Formal Syntheses of Lycorine and Congeners Using a 5 -Endo-Trig/6 -Endo-Trig Radical Cyclization Sequence. Org Lett 2024; 26:4292-4296. [PMID: 38728657 DOI: 10.1021/acs.orglett.4c01271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
Here, we report a practical route to medicinally interesting lycorine congeners alongside formal syntheses of various lycorine-type natural products, including lycorine itself. The efficiency of our strategy derives from a back-to-back 5-endo-trig/6-endo-trig radical cyclization sequence, which we systematically studied both experimentally and computationally. The results of our work will facilitate future development of urgently needed antiviral therapeutics based on lycorine.
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Affiliation(s)
- Shen Tan
- Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, China
- Laboratoire de Synthèse Organique, CNRS, École Polytechnique, Palaiseau 91128, France
| | - Samir Z Zard
- Laboratoire de Synthèse Organique, CNRS, École Polytechnique, Palaiseau 91128, France
| | - Le Nhan Pham
- Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Adelaide, South Australia 5042, Australia
| | - Michelle L Coote
- Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Adelaide, South Australia 5042, Australia
| | - Martin G Banwell
- Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, China
| | - Ping Lan
- Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, China
| | - Lorenzo V White
- Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, China
- Laboratoire de Synthèse Organique, CNRS, École Polytechnique, Palaiseau 91128, France
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2
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Bautista DD, Reyes MAV, González EAB, Bugarin A. Synthetic Approaches to α-, β-, γ-, and δ-lycoranes. European J Org Chem 2023; 26:e202300404. [PMID: 37927304 PMCID: PMC10624333 DOI: 10.1002/ejoc.202300404] [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: 04/27/2023] [Indexed: 11/07/2023]
Abstract
Lycorane is a pentacyclic core presented in alkaloids isolated from the Amaryllidaceae family of herbaceous flowering plants. Members of this class of natural products have shown to display important biological properties including analgesic, antiviral, and antiproliferative activities. This review presents the known synthetic routes toward α-, β-, γ-, and δ-lycoranes. α-(19 routes), β-(10 routes), γ-(38 routes), and δ-(6 routes).
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Affiliation(s)
- Diego Díaz Bautista
- Universidad Juárez Autónoma de Tabasco, Division Académica de Ciencias Básicas, carretera Cunduacán-Jalpa Km. 0.5, Cunduacán Tabasco 86690, México
| | - Miguel A Vilchis Reyes
- Universidad Juárez Autónoma de Tabasco, Division Académica de Ciencias Básicas, carretera Cunduacán-Jalpa Km. 0.5, Cunduacán Tabasco 86690, México
| | - Ever A Blé González
- Universidad Juárez Autónoma de Tabasco, Division Académica de Ciencias Básicas, carretera Cunduacán-Jalpa Km. 0.5, Cunduacán Tabasco 86690, México
- Department of Chemistry and Physics, Florida Gulf Coast University, 10501 FGCU Boulevard South, Fort Myers, FL, 33965
| | - Alejandro Bugarin
- Department of Chemistry and Physics, Florida Gulf Coast University, 10501 FGCU Boulevard South, Fort Myers, FL, 33965
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3
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Chen H, Zhou Y, Lei P, Wang H, Yan Q, Properzi R, Wang W, Jing L, Chen F. Visible-light-driven intramolecular xanthylation of remote unactivated C(sp3)-H bonds. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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4
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Zhang TY, Zhang LY, Liang X, Wei K, Yang YR. Catalytic, Asymmetric Total Synthesis of (+)-α-, (+)-β-, (+)-γ-, and (-)-δ-Lycorane. Org Lett 2022; 24:2905-2909. [PMID: 35412321 DOI: 10.1021/acs.orglett.2c00905] [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 first collectively asymmetric total synthesis of all members of lycorane, including (+)-α, (+)-β, (+)-γ, and (-)-δ, in a catalytic manner has been achieved. The cornerstone of this synthesis features an asymmetric, stereodivergent Ir/amine dual catalytic α-allylation of 2-phthalimidoacetaldehyde.
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Affiliation(s)
- Tian-Yuan Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Lu-Yue Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiao Liang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Kun Wei
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yu-Rong Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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5
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Wang N, Wu Z, Wang J, Ullah N, Lu Y. Recent applications of asymmetric organocatalytic annulation reactions in natural product synthesis. Chem Soc Rev 2021; 50:9766-9793. [PMID: 34286704 DOI: 10.1039/d0cs01124j] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The past two decades have witnessed remarkable growth of asymmetric organocatalysis, which is now a firmly established synthetic tool, serving as a powerful platform for the production of chiral molecules. Ring structures are ubiquitous in organic compounds, and, in the context of natural product synthesis, strategic construction of ring motifs is often crucial, fundamentally impacting the eventual fate of the whole synthetic plan. In this review, we provide a comprehensive and updated summary of asymmetric organocatalytic annulation reactions; in particular, the application of these annulation strategies in natural product synthesis will be highlighted.
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Affiliation(s)
- Nengzhong Wang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore.
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6
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Zhao Y, Zhu Y, Ma G, Wei Q, Yang S, Zeng X, Zhang H, Chen J. Short, enantioselective, gram-scale synthesis of (-)-zephyranthine. Chem Sci 2021; 12:9452-9457. [PMID: 34349919 PMCID: PMC8278928 DOI: 10.1039/d1sc03147c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 11/21/2022] Open
Abstract
A reasonable synthesis design by strategically integrating functional group manipulation into the ring system construction resulted in a short, enantioselective, gram-scale total synthesis of (−)-zephyranthine. The concise route includes a catalytic Michael/Michael cascade for the asymmetric synthesis of a penta-substituted cyclohexane with three contiguous stereogenic centers, a remarkable 8-step one-pot operation to easily assemble the zephyranthine tetracyclic skeleton, the regioselective construction of a double bond in the C ring and an asymmetric dihydroxylation. This synthesis is also flexible and paves a potential path to a variety of cyclohexylamine-fused tricyclic or polycyclic alkaloids. A reasonable synthesis design by strategically integrating functional group manipulation into the ring system construction resulted in a short, enantioselective, gram-scale total synthesis of (−)-zephyranthine.![]()
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Affiliation(s)
- Yuxiang Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University Kunming 650091 P. R. China
| | - Yanren Zhu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University Kunming 650091 P. R. China
| | - Guolan Ma
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University Kunming 650091 P. R. China
| | - Qi Wei
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University Kunming 650091 P. R. China
| | - Shaoxiong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University Kunming 650091 P. R. China
| | - Xiaoyu Zeng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University Kunming 650091 P. R. China
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University Kunming 650091 P. R. China
| | - Jingbo Chen
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University Kunming 650091 P. R. China
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7
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8
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López-Mendoza P, Díaz JE, Loaiza AE, Miranda LD. Visible light/Ir(III) photocatalytic initiation of xanthate-based radical-chain reactions: Xanthate group transfer and oxidative addition to aromatic systems. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.079] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Beniazza R, Poittevin C, Lusseau J, Massip S, Robert F, Landais Y. A Unified Strategy Toward 5-, 6-, and 7-Membered Nitrogen Heterocycles Through Free Radical then Metal-Mediated Functionalization of Ene-carbamates. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700485] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Redouane Beniazza
- Institute of Molecular Sciences; UMR-CNRS 5255; University of Bordeaux; 351 Cours de la libération 33405 Talence cedex France
| | - Clément Poittevin
- Institute of Molecular Sciences; UMR-CNRS 5255; University of Bordeaux; 351 Cours de la libération 33405 Talence cedex France
| | - Jonathan Lusseau
- Institute of Molecular Sciences; UMR-CNRS 5255; University of Bordeaux; 351 Cours de la libération 33405 Talence cedex France
| | - Stéphane Massip
- Institut Européen de Chimie et Biologie; 2, Rue Robert Escarpit - 33607 Pessac France
| | - Frédéric Robert
- Institute of Molecular Sciences; UMR-CNRS 5255; University of Bordeaux; 351 Cours de la libération 33405 Talence cedex France
| | - Yannick Landais
- Institute of Molecular Sciences; UMR-CNRS 5255; University of Bordeaux; 351 Cours de la libération 33405 Talence cedex France
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10
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Chen YJ, Cai SL, Wang CC, Cheng JD, Kramer S, Sun XW. Asymmetric Total Syntheses of (-)-α-Lycorane, (-)-Zephyranthine, and Formal Synthesis of (+)-Clivonine. Chem Asian J 2017; 12:1309-1313. [PMID: 28474489 DOI: 10.1002/asia.201700555] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 04/29/2017] [Indexed: 11/11/2022]
Abstract
An asymmetric route to (-)-α-lycorane and (-)-zephyranthine, and a formal total synthesis of (+)-clivonine were achieved. A pivotal intermediate, which serves as a potent precursor for the divergent syntheses of these natural products, was accessed by a diastereoselective Pd-catalyzed cinnamylation of an N-tert-butanesulfinyl imine.
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Affiliation(s)
- Yong-Jian Chen
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Sen-Lin Cai
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Chuan-Chuan Wang
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Jin-Duo Cheng
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Søren Kramer
- Department of Chemistry, Technical University of Denmark, 2800, Kgs. Lyngby, Denmark
| | - Xing-Wen Sun
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
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11
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Monaco A, Szulc BR, Rao ZX, Barniol-Xicota M, Sehailia M, Borges BMA, Hilton ST. Short Total Synthesis of (±)-γ-Lycorane by a Sequential Intramolecular Acylal Cyclisation (IAC) and Intramolecular Heck Addition Reaction. Chemistry 2017; 23:4750-4755. [PMID: 28217842 DOI: 10.1002/chem.201700143] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Indexed: 01/23/2023]
Abstract
An intramolecular acylal cyclisation (IAC) approach to the synthesis of a range of bicyclic heterocycles is reported. As an example of the utility of the IAC reaction, the methodology was applied in a protecting-group-free five-step total synthesis of (±)-γ-lycorane, incorporating a new intramolecular Heck addition reaction to generate the pentacyclic core structure of the natural product in good yield.
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Affiliation(s)
- Alessandra Monaco
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK
| | - Blanka R Szulc
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK
| | - Zenobia X Rao
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK
| | - Marta Barniol-Xicota
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, Institute of Biomedicine (IBUB), Universitat de Barcelona, Av. Joan XXIII, s/n, 08028, Barcelona, Spain
| | - Moussa Sehailia
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK
| | - Bruno M A Borges
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK
| | - Stephen T Hilton
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK
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12
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Quiclet-Sire B, Zard SZ. On the Strategic Impact of the Degenerative Transfer of Xanthates on Synthetic Planning. Isr J Chem 2016. [DOI: 10.1002/ijch.201600094] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Béatrice Quiclet-Sire
- Laboratoire de Synthèse Organique associé au CNRS; Ecole Polytechnique, F-; 91128 Palaiseau Cedex France
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique associé au CNRS; Ecole Polytechnique, F-; 91128 Palaiseau Cedex France
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13
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Miranda LD, Icelo-Ávila E, Rentería-Gómez Á, Pila M, Marrero JG. A C-3-Selective Direct Alkylation of Coumarins by Using a Microwave-Assisted Xanthate-Based Radical Reaction. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500322] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Xu RQ, Gu Q, Wu WT, Zhao ZA, You SL. Construction of Erythrinane Skeleton via Pd(0)-Catalyzed Intramolecular Dearomatization of para-Aminophenols. J Am Chem Soc 2014; 136:15469-72. [DOI: 10.1021/ja508645j] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Ren-Qi Xu
- State Key
Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Qing Gu
- State Key
Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Wen-Ting Wu
- State Key
Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Zhuo-An Zhao
- State Key
Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Shu-Li You
- State Key
Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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15
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Sun Z, Zhou M, Li X, Meng X, Peng F, Zhang H, Shao Z. Catalytic asymmetric assembly of octahydroindolones: divergent synthesis of lycorine-type amaryllidaceae alkaloids (+)-α-lycorane and (+)-lycorine. Chemistry 2014; 20:6112-9. [PMID: 24700723 DOI: 10.1002/chem.201400178] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Indexed: 11/07/2022]
Abstract
We report the first catalytic asymmetric approach to octahydroindolones and a divergent enantioselective synthesis of perhydroindole alkaloids, as exemplified by lycorine-type Amaryllidaceae alkaloids (+)-α-lycorane and (+)-lycorine, from a common intermediate by using a highly concise route. The assembly of octahydroindolones employs a catalytic enantioselective 1,4-conjugate addition of nitro dienynes, followed by a TsOH-catalyzed cascade synthesis of highly functionalized enones, and a diastereoselective intramolecular Michael addition.
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Affiliation(s)
- Zhongwen Sun
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091 (P.R. China), Fax: (+86) 871-65035538
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16
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Kalaitzakis D, Montagnon T, Antonatou E, Bardají N, Vassilikogiannakis G. From Simple Furans to Complex Nitrogen-Bearing Aromatic Polycycles by Means of a Flexible and General Reaction Sequence Initiated by Singlet Oxygen. Chemistry 2013; 19:10119-23. [DOI: 10.1002/chem.201301571] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Indexed: 02/05/2023]
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17
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Poittevin C, Liautard V, Beniazza R, Robert F, Landais Y. Free-Radical Carbo-alkenylation of Enamides and Ene-carbamates. Org Lett 2013; 15:2814-7. [DOI: 10.1021/ol401147w] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Clément Poittevin
- Institut des Sciences Moléculaires, Université de Bordeaux, UMR-CNRS 5255, 351, cours de la libération, 33405 Talence Cedex, France
| | - Virginie Liautard
- Institut des Sciences Moléculaires, Université de Bordeaux, UMR-CNRS 5255, 351, cours de la libération, 33405 Talence Cedex, France
| | - Redouane Beniazza
- Institut des Sciences Moléculaires, Université de Bordeaux, UMR-CNRS 5255, 351, cours de la libération, 33405 Talence Cedex, France
| | - Frédéric Robert
- Institut des Sciences Moléculaires, Université de Bordeaux, UMR-CNRS 5255, 351, cours de la libération, 33405 Talence Cedex, France
| | - Yannick Landais
- Institut des Sciences Moléculaires, Université de Bordeaux, UMR-CNRS 5255, 351, cours de la libération, 33405 Talence Cedex, France
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18
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Li G, Xie JH, Hou J, Zhu SF, Zhou QL. Catalytic Asymmetric Hydrogenation of α-Arylcyclohexanones and Total Synthesis of (−)-α-Lycorane. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300165] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Wang Y, Luo YC, Zhang HB, Xu PF. Concise construction of the tetracyclic core of lycorine-type alkaloids and the formal synthesis of α-lycorane based on asymmetric bifunctional thiourea-catalyzed cascade reaction. Org Biomol Chem 2013; 10:8211-5. [PMID: 22976822 DOI: 10.1039/c2ob26422f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A concise and stereoselective construction of the tetracyclic core of lycorine-type alkaloids and the formal synthesis of α-lycorane has been achieved. The feature of the current method is the employment of a bifunctional thiourea-catalyzed cascade reaction as a powerful tool to construct the skeleton of the natural product, which is a challenging yet very rarely explored strategy. As a result, the tetracyclic core is efficiently synthesized in just three simple operations involving two consecutive cascade reactions.
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Affiliation(s)
- Yao Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, PR China
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20
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Stephenson GR, Palotai IM, Thomas S, Tinkl M. Synthetic Studies for the 1,3-Iterative Organoiron Approach to the Synthesis of Siculinine: Efficient Arylation Using a Diarylcuprate Reagent. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Tang BX, Zhang YH, Song RJ, Tang DJ, Deng GB, Wang ZQ, Xie YX, Xia YZ, Li JH. Intramolecular ipso-halocyclization of 4-(p-unsubstituted-aryl)-1-alkynes leading to spiro[4,5]trienones: scope, application, and mechanistic investigations. J Org Chem 2012; 77:2837-49. [PMID: 22360308 DOI: 10.1021/jo300037n] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A new, general method for the synthesis of spiro[4,5]trienones is described by the intramolecular ipso-halocyclization of 4-(p-unsubstituted-aryl)-1-alkynes. In the presence of halide electrophiles, a variety of 4-(p-unsubstituted-aryl)-1-alkynes underwent the intramolecular ipso-halocyclization with water smoothly, affording the corresponding halo-substituted spiro[4,5]trienones in moderate to good yields. The obtained spiro[4,5]trienones can be applied in constructing the azaquaternary tricyclic skeleton via Pd-catalyzed Heck reaction. Notably, the prepared spiro[4,5]trienones and azaquaternary tricycles are of importance in the areas of pharmaceuticals and agrochemicals. The mechanism of the intramolecular ipso-halocyclization reaction is also discussed according to the (18)O-labeling experiments and DFT calculations.
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Affiliation(s)
- Bo-Xiao Tang
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), Hunan Normal University, Changsha 410081, China
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22
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Mijangos MV, González-Marrero J, Miranda LD, Vincent-Ruz P, Lujan-Montelongo A, Olivera-Díaz D, Bautista E, Ortega A, de la Luz Campos-González M, Gamez-Montaño R. Microwave-assisted C-3 selective oxidative radical alkylation of flavones. Org Biomol Chem 2012; 10:2946-9. [DOI: 10.1039/c2ob25249j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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23
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López-Valdez G, Olguín-Uribe S, Millan-Ortíz A, Gamez-Montaño R, Miranda LD. Convenient access to isoindolinones via carbamoyl radical cyclization. Synthesis of cichorine and 4-hydroxyisoindolin-1-one natural products. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.01.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Huang H, Jin Z, Zhu K, Liang X, Ye J. Highly Diastereo- and Enantioselective Synthesis of 5-Substituted 3-Pyrrolidin-2-ones: Vinylogous Michael Addition under Multifunctional Catalysis. Angew Chem Int Ed Engl 2011; 50:3232-5. [DOI: 10.1002/anie.201008255] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Indexed: 11/07/2022]
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25
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Huang H, Jin Z, Zhu K, Liang X, Ye J. Highly Diastereo- and Enantioselective Synthesis of 5-Substituted 3-Pyrrolidin-2-ones: Vinylogous Michael Addition under Multifunctional Catalysis. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201008255] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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27
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28
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Hong BC, Nimje RY, Wu MF, Sadani AA. Organocatalytic Double Michael Reaction of 7-Oxohept-2-enoates and Nitrostyrene – Formal Synthesis of (–)-α- and (–)-β-Lycorane. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701122] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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Rose MD, Cassidy MP, Rashatasakhon P, Padwa A. Acid-promoted cyclization reactions of tetrahydroindolinones. Model studies for possible application in a synthesis of selaginoidine. J Org Chem 2007; 72:538-49. [PMID: 17221972 PMCID: PMC2475590 DOI: 10.1021/jo0619783] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of various substituted bicyclic lactams by an acid-induced Pictet-Spengler reaction of tetrahydroindolinones bearing tethered heteroaromatic rings is presented. The outcome of the cyclization depends on the position of the furan tether, tether length, nature of the tethered heteroaromatic ring, and the substituent group present on the 5-position of the tethered heteroaryl group. A one-pot procedure was developed to efficiently prepare tetrahydroindolinones containing tethered furan rings. In a typical example, the reaction of furanyl azide 26 with n-Bu3P delivered iminophosphorane 27, which was allowed to react with a 1-alkyl-(2-oxocyclohexyl)acetic acid to provide the desired furanyl-substituted tetrahydroindolinone system 29. Treatment of 29 with trifluoroacetic acid afforded the tetracyclic lactam skeleton 30 found in the alkaloid (+/-)-selaginoidine.
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Affiliation(s)
- Mickea D Rose
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA
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30
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Reimann E. Synthesis pathways to Erythrina alkaloids and Erythrina type compounds. FORTSCHRITTE DER CHEMIE ORGANISCHER NATURSTOFFE = PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS. PROGRES DANS LA CHIMIE DES SUBSTANCES ORGANIQUES NATURELLES 2007; 88:1-62. [PMID: 17302178 DOI: 10.1007/978-3-211-49389-2_1] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Affiliation(s)
- Eberhard Reimann
- Department of Pharmacy, Ludwig-Maximilians-Universität München, Germany.
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31
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Padwa A, Wang Q. Synthesis of the tetracyclic framework of the erythrina alkaloids using a [4 + 2]-cycloaddition/Rh(I)-catalyzed cascade of 2-imidofurans. J Org Chem 2006; 71:7391-402. [PMID: 16958534 PMCID: PMC2494947 DOI: 10.1021/jo061269p] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Several 2-imido substituted furans were found to undergo a rapid intramolecular [4 + 2]-cycloaddition to deliver oxabicyclo adducts in good to excellent yields. By using a Rh(I)-catalyzed ring opening of the resulting oxabicyclic adduct, it was possible to prepare several highly functionalized tetrahydro-1H-indol-2(3H)-one derivatives which were then used to prepare several erythrina alkaloids. By taking advantage of the Rh(I)-catalyzed reaction, it was possible to convert tert-butyl 3-oxo-5-carbomethoxy-10-oxa-2-azatricyclo[5.2.1.0(1,5)]dec-8-ene-2-carboxylate into the ring opened boronate by reaction with phenylboronic acid. Treatment of the boronate with pinacol/acetic acid afforded the corresponding diol which was used in a successful synthesis of racemic 3-demethoxyerythratidinone. During the course of these studies, several novel rearrangement reactions were encountered while attempting to induce an acid-initiated Pictet Spengler cyclization of a key lactam intermediate. The IMDAF/Rh(I)-catalyzed ring opening cascade sequence was also applied to the total synthesis of (+/-)-erysotramidine as well as the lycorine type alkaloid (+/-)-epi-zephyranthine.
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Affiliation(s)
- Albert Padwa
- Department of Chemistry, Emory University, Atlanta, Georgia 30322,
| | - Qiu Wang
- Department of Chemistry, Emory University, Atlanta, Georgia 30322,
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32
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Quiclet-Sire B, Zard SZ. Powerful CarbonCarbon Bond Forming Reactions Based on a Novel Radical Exchange Process. Chemistry 2006; 12:6002-16. [PMID: 16791885 DOI: 10.1002/chem.200600510] [Citation(s) in RCA: 180] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Xanthates and related derivatives have proved to be extremely useful for both inter- and intramolecular radical additions. The broad applicability of the intermolecular addition to un-activated olefins opens tremendous opportunities for synthesis, since various functional groups can be brought together under mild conditions and complex structures can be rapidly assembled. The presence of the xanthate in the product is also a powerful asset for further modifications, by both radical and non-radical pathways. Of special importance is the access to highly substituted aromatic and heteroaromatic derivatives and the synthesis of block polymers through a controlled radical polymerisation mediated by various thiocarbonylthio group containing agents (RAFT and MADIX processes).
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Affiliation(s)
- Béatrice Quiclet-Sire
- Laboratoire de Synthèse Organique associé au CNRS (UMR 7652), Département de Chimie, Ecole Polytechnique, 91128 Palaiseau, France
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33
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Gao S, Tu YQ, Hu X, Wang S, Hua R, Jiang Y, Zhao Y, Fan X, Zhang S. General and Efficient Strategy for Erythrinan and Homoerythrinan Alkaloids: Syntheses of (±)-3-Demethoxyerythratidinone and (±)-Erysotramidine. Org Lett 2006; 8:2373-6. [PMID: 16706529 DOI: 10.1021/ol0607185] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] A general and efficient strategy to both aromatic-type and nonaromatic-type erythrinan and homoerythrinan alkaloids has been developed. This approach involves a key two-step sequence, an alkylation of a ketone with various N-substituted iodoacetamides followed by a N-acyliminium ion promoted intramolecular cyclization, and represents one of the shortest routes to erythrinan and homoerythrinan alkaloids. As the application, the formal total synthesis of (+/-)-3-demethoxyerythratidinone and the total synthesis of (+/-)-erysotramidine have been achieved, respectively.
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Affiliation(s)
- Shuanhu Gao
- State Key Laboratory of Applied Organic Chemistry & Department of Chemistry, Lanzhou University, PRC
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34
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Fukumoto H, Takahashi K, Ishihara J, Hatakeyama S. Total Synthesis of (+)-β-Erythroidine. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600210] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Fukumoto H, Takahashi K, Ishihara J, Hatakeyama S. Total Synthesis of (+)-β-Erythroidine. Angew Chem Int Ed Engl 2006; 45:2731-4. [PMID: 16550620 DOI: 10.1002/anie.200600210] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hironori Fukumoto
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
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36
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Dake G. Recent approaches to the construction of 1-azaspiro[4.5]decanes and related 1-azaspirocycles. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.01.071] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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37
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Abstract
Palladium-catalyzed arylation of alpha,beta-unsaturated gamma-lactam, which could be prepared by condensation of amines and keto-esters, has been carried out to make the core structure of Erythrina alkaloids.
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Affiliation(s)
- Guncheol Kim
- Department of Chemistry, College of Natural Science, Chungnam National University, Taejon 305-764, Korea.
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38
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Wang Q, Padwa A. Synthesis of the erythrina alkaloid 3-demethoxyerythratidinone. Novel acid-induced rearrangements of its precursors. Org Lett 2006; 8:601-4. [PMID: 16468721 PMCID: PMC2495026 DOI: 10.1021/ol0527330] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] A new strategy for the synthesis of 3-demethoxyerythratidinone has been developed and is based on an extraordinarily facile intramolecular Diels-Alder reaction of a 2-imido-substituted furan. During the course of the synthesis, several novel acid-induced rearrangement reactions were encountered.
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Affiliation(s)
- Qiu Wang
- Department of Chemistry, Emory University, Atlanta, Georgia 30322,
| | - Albert Padwa
- Department of Chemistry, Emory University, Atlanta, Georgia 30322,
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39
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Regioselective alkylation of 3,4-dihydro-2H-pyran by xanthate-mediated free radical nonchain process. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.09.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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The 5-exo-trig radical cyclization reaction under reductive and oxidative conditions in the synthesis of optically pure GABA derivatives. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.09.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Padwa A, Lee HI, Rashatasakhon P, Rose M. Electrophilic-Induced Cyclization Reaction of Hexahydroindolinone Derivatives and Its Application toward the Synthesis of (±)-Erysotramidine. J Org Chem 2004; 69:8209-18. [PMID: 15549789 DOI: 10.1021/jo048647f] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A convenient synthesis of variously substituted octahydroindolo[7a,1a]-isoquinolinones has been achieved by an acid-induced cyclization of hexahydroindolinones bearing tethered phenethyl groups. The formation of a single lactam diastereomer is the result of the stereoelectronic preference for axial attack by the aromatic ring onto the initially formed N-acyliminium ion from the least hindered side. Additional experiments showed that a variety of hexahydroindolinones containing tethered pi-bonds undergo a related acid-induced cyclization reaction. Treatment of the 3-methylbut-3-enyl-substituted hexahydroindolinone with acid furnished a 3:1 mixture of isomeric octahydropyrido[2,1-i]indolinones in near-quantitative yield. Interestingly, cyclization of the closely related 1-(3-methoxybut-3-enyl)-substituted hexahydroindolin-one afforded a pyrrolo[3,2,1-ij]quinolinone as the exclusive product. With this system, initial protonation takes place on the more nucleophilic enol ether pi-bond and the resulting carbonium ion undergoes a subsequent cyclization with the enamido pi-bond to give the observed product. The electrophilic promoted cyclizations were extended to include the related hexahydro[1]pyrindinone and 1H-quinolinone systems. An NBS-promoted intramolecular electrophilic aromatic substitution reaction of 1-[2-(3,4-dimethoxyphenyl)ethyl]-1,4,5,6-tetrahydroindolinone was used to assemble the tetracyclic core of the erythrinone skeleton. The resulting cyclized product was transformed into (+/-)-erysotramidine in three additional steps.
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Affiliation(s)
- Albert Padwa
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA.
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42
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Grainger RS, Innocenti P. Dithiocarbamate Group Transfer Cyclization Reactions of Carbamoyl Radicals under “Tin-Free” Conditions. Angew Chem Int Ed Engl 2004; 43:3445-8. [PMID: 15221835 DOI: 10.1002/anie.200453600] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Richard S Grainger
- Department of Chemistry, King's College London, Strand, London WC2R 2LS, UK.
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43
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Yasuhara T, Nishimura K, Osafune E, Muraoka O, Tomioka K. Synthesis of Nitrogen-Functionalized Cyclohexanes Using Chemoselective Conjugate Addition of Phenyllithium to Linear .OMEGA.-Nitro-.ALPHA.,.BETA.,.PSI.,.OMEGA.-Unsaturated Ester and Subsequent Stereoselective Intramolecular Nitro-Michael Cyclization. Chem Pharm Bull (Tokyo) 2004; 52:1109-13. [PMID: 15340199 DOI: 10.1248/cpb.52.1109] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nitrogen-functionalized cyclohexane derivatives with three contiguous chiral centers were synthesized by nitroalkene-selective conjugate addition of phenyllithium to a omega-nitro-alpha,beta,psi,omega-unsaturated ester and subsequent stereocontrolled intramolecular nitro-Michael cyclization with cesium fluoride and a quaternary ammonium bromide. The cyclohexanes were applicable to the total synthesis of alpha-, beta- and gamma-lycoranes.
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Affiliation(s)
- Tomohisa Yasuhara
- School of Pharmaceutical Sciences, Kinki University, Higashi-osaka, Osaka 577-8502, Japan
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44
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Lee HI, Cassidy MP, Rashatasakhon P, Padwa A. Efficient Synthesis of (±)-Erysotramidine Using an NBS-Promoted Cyclization Reaction of a Hexahydroindolinone Derivative. Org Lett 2003; 5:5067-70. [PMID: 14682766 DOI: 10.1021/ol036106r] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An NBS-promoted intramolecular electrophilic aromatic substitution reaction of a hexahydroindolinone derivative was used to assemble the tetracyclic core of the erythrinane skeleton. The resulting cyclized product was transformed into (+/-)-erysotramidine in three additional steps. The cyclization reaction is also successful using variously substituted aryl and furanyl bicyclic lactams under acidic conditions. [reaction: see text]
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Affiliation(s)
- Hyoung Ik Lee
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA
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45
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46
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Alajarín M, Vidal A, Ortín MM. Intramolecular addition of benzylic radicals onto ketenimines. Synthesis of 2-alkylindoles. Org Biomol Chem 2003; 1:4282-92. [PMID: 14685332 DOI: 10.1039/b310593h] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The inter- and intramolecular addition of free radicals onto ketenimines is studied. All the attempts to add intermolecularly several silicon, oxygen or carbon centered radicals to N-(4-methylphenyl)-C,C-diphenyl ketenimine were unsuccessful. In contrast, the intramolecular addition of benzylic radicals, generated from xanthates, onto the central carbon of a ketenimine function with its N atom linked to the ortho position of the aromatic ring occurred under a variety of reaction conditions. These intramolecular cyclizations provide a novel radical-mediated synthesis of 2-alkylindoles.
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Affiliation(s)
- Mateo Alajarín
- Departamento de Química Orgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
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47
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