1
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Yu F, Xu L. A concise and stereoselective synthesis of the BCDF tetracyclic ring system of C 19-diterpenoid alkaloids. RSC Adv 2024; 14:21102-21106. [PMID: 38966809 PMCID: PMC11223105 DOI: 10.1039/d4ra02821j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 06/18/2024] [Indexed: 07/06/2024] Open
Abstract
A new synthetic route for the BCDF tetracyclic ring system of C19-diterpenoid alkaloids (C19-DTAs) has been developed. The key step is a Pd-catalyzed transannular alkenylation that installs a functionalized bridged F ring. The overall strategy is concise and stereoselective, and it provides a valuable new tool for the synthesis of C19-DTAs. The synthesis begins with a bridged [3.2.1] ring system, which is converted to a key intermediate through a series of highly regio- and stereoselective processes. The introduction of an allylic side chain with high precision is accomplished, culminating in a Pd-catalyzed transannular alkenylation that installs a functionalized bridged F ring to yield the BCDF tetracyclic analog of C19-DTAs.
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Affiliation(s)
- Fangzhou Yu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy, Sichuan University Chengdu 610041 P. R. China
| | - Liang Xu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy, Sichuan University Chengdu 610041 P. R. China
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2
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Ma F, Li Y, Akkarasereenon K, Qiu H, Cheung YT, Guo Z, Tong R. Aza-Achmatowicz rearrangement coupled with intermolecular aza-Friedel-Crafts enables total syntheses of uleine and aspidosperma alkaloids. Chem Sci 2024; 15:5730-5737. [PMID: 38638226 PMCID: PMC11023026 DOI: 10.1039/d4sc00601a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 03/11/2024] [Indexed: 04/20/2024] Open
Abstract
Aspidosperma and uleine alkaloids belong to the large family of monoterpene indole alkaloids with diverse biological activities and thus have attracted extensive synthetic interest. Reported is the development of a new synthetic strategy that allows direct C3-C2' linkage of indoles with functionalized 2-hydroxypiperidines to construct the core common to all aspidoserma and uleine alkaloids. Such indole-piperidine linkage is enabled by coupling aza-Achmatowicz rearrangement (AAR) with indoles via an intermolecular aza-Friedel-Crafts (iAFC) reaction. This AAR-iAFC reaction proceeds under mild acidic conditions with wide tolerance of functional groups (33 examples). The synthetic application of the AAR-iAFC method was demonstrated with collective total syntheses of 3 uleine-type and 6 aspidosperma alkaloids: (+)-3-epi-N-nor-dasycarpidone, (+)-3-epi-dasycarpidone, (+)-3-epi-uleine, 1,2-didehydropseudoaspidospermidine, 1,2-dehydroaspidospermidine, vincadifformine, winchinine B, aspidospermidine, and N-acetylaspidospermidine. We expect that this AAR-iAFC strategy is applicable to other monoterpene indole alkaloids with the C3-C2' linkage of indoles and piperidines.
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Affiliation(s)
- Foqing Ma
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay Kowloon Hong Kong China +86 23581594 +86 23587357
| | - Yunlong Li
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay Kowloon Hong Kong China +86 23581594 +86 23587357
| | - Kornkamon Akkarasereenon
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay Kowloon Hong Kong China +86 23581594 +86 23587357
| | - Huiying Qiu
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay Kowloon Hong Kong China +86 23581594 +86 23587357
| | - Yuen Tsz Cheung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay Kowloon Hong Kong China +86 23581594 +86 23587357
| | - Zhihong Guo
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay Kowloon Hong Kong China +86 23581594 +86 23587357
| | - Rongbiao Tong
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay Kowloon Hong Kong China +86 23581594 +86 23587357
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3
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Ji J, Chen J, Qin S, Li W, Zhao J, Li G, Song H, Liu XY, Qin Y. Total Synthesis of Vilmoraconitine. J Am Chem Soc 2023; 145:3903-3908. [PMID: 36779887 DOI: 10.1021/jacs.3c00318] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Vilmoraconitine belongs to one of the most complex skeleton types in the C19-diterpenoid alkaloids, which architecturally features an unprecedented heptacyclic core possessing a rigid cyclopropane unit. Here, we report the first total synthesis of vilmoraconitine relying on strategic use of efficient ring-forming reactions. Key steps include an oxidative dearomatization-induced Diels-Alder cycloaddition, a hydrodealkenylative fragmentation/Mannich sequence, and an intramolecular Diels-Alder cycloaddition.
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Affiliation(s)
- Jiujian Ji
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Jiajun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Sixun Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Wanye Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Jun Zhao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Guozhao Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Hao Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
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4
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Shimakawa T, Nakamura S, Asai H, Hagiwara K, Inoue M. Total Synthesis of Puberuline C. J Am Chem Soc 2023; 145:600-609. [PMID: 36538394 DOI: 10.1021/jacs.2c11259] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Puberuline C (1) is an architecturally complex C19-diterpenoid alkaloid with a unique ring fusion pattern. The 6/7/5/6/6/6-membered rings (ABCDEF-rings) contain one tertiary amine and six oxygen functionalities, and possess 12 contiguously aligned stereocenters, three of which are quaternary. These structural features of 1 make its chemical construction exceptionally challenging. Here, we disclose the first total synthesis of 1. The synthesis was accomplished from 2-cyclohexenone (9) by integrating radical cascade and Mukaiyama aldol reactions as the key transformations. A double Mannich reaction fused the A- and E-rings, and Sonogashira coupling attached the C-ring, efficiently leading to ACE-rings with the requisite 19 carbons of 1. The chemically stable tertiary chloride of the ACE-ring structure was then transformed to the corresponding bridgehead radical, which participated in the simultaneous cyclization of the B- and F-rings via a highly organized radical cascade process. This unusual step installed five contiguous stereocenters, including two quaternary carbons, without damaging the preexisting multiple polar functionalities. Subsequently, the intramolecular Mukaiyama aldol reaction between silyl enol ether and acetal was realized by applying a combination of SnCl4 and ZnCl2, forging the last remaining D-ring of the hexacycle. Finally, 3 was elaborated into 1 through regio- and stereoselective functionalizations of the BCD-rings. Our novel radical-based strategy achieved the total synthesis of 1 in 32 total steps from simple 9, demonstrating the power of the radical cascade reaction to streamline the assembly of highly complex molecules.
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Affiliation(s)
- Tsukasa Shimakawa
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo113-0033, Japan
| | - Shu Nakamura
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo113-0033, Japan
| | - Hibiki Asai
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo113-0033, Japan
| | - Koichi Hagiwara
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo113-0033, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo113-0033, Japan
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5
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Kato K, Ikeuchi K, Suzuki T, Tanino K. Total Synthesis of 2-Isocyanoallopupukeanane: Construction of Caged Skeleton by Intramolecular Alkylation of Bromonitriles. Org Lett 2022; 24:6407-6411. [PMID: 36017948 DOI: 10.1021/acs.orglett.2c02434] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new method for constructing the bicyclo[3.2.1]octane skeleton was developed by the intramolecular alkylation of a nitrile-side-chain-containing cyclohexanone derivative. The cyclization precursors were prepared via the stereoselective bromination of the triisopropylsilyl enol ethers of 4-substituted cyclohexanones. Upon treatment with LiNEt2, the bromonitriles underwent a stereoselective intramolecular SN2 reaction to afford bicyclo[3.2.1]octane derivatives with a cyano group on the convex face. The total synthesis of 2-isocyanoallopupukeanane (6.5% yield) from methyl vinyl ketone was accomplished via a 17-step transformation.
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Affiliation(s)
- Kosuke Kato
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan
| | - Kazutada Ikeuchi
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Takahiro Suzuki
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Keiji Tanino
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
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6
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Liu XY, Ke BW, Qin Y, Wang FP. The diterpenoid alkaloids. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2022; 87:1-360. [PMID: 35168778 DOI: 10.1016/bs.alkal.2021.08.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The diterpenoid alkaloids are a family of extremely important natural products that have long been a research hotspot due to their myriad of intricate structures and diverse biological properties. This chapter systematically summarizes the past 11 years (2009-2019) of studies on the diterpenoid alkaloids, including the "so-called" atypical ones, covering the classification and biogenetic relationships, phytochemistry together with 444 new alkaloids covering 32 novel skeletons and the corrected structures, chemical reactions including conversion toward toxoids, synthetic studies, as well as biological activities. It should be noted that the synthetic studies, especially the total syntheses of various diterpenoid alkaloids, are for the first time reviewed in this treatise. This chapter, in combination with our four previous reviews in volumes 42, 59, 67, and 69, will present to the readers a more completed and updated profile of the diterpenoid alkaloids.
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Affiliation(s)
- Xiao-Yu Liu
- Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, Sichuan University, Chengdu, China; Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Bo-Wen Ke
- West China Hospital, Sichuan University, Chengdu, China
| | - Yong Qin
- Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, Sichuan University, Chengdu, China; Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, China.
| | - Feng-Peng Wang
- Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, Sichuan University, Chengdu, China.
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7
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Mutoh H, Nakamura S, Hagiwara K, Inoue M. Construction of Pentacyclic Limonoid Skeletons via Radical Cascade Reactions. J Org Chem 2021; 86:6869-6878. [PMID: 33905252 DOI: 10.1021/acs.joc.1c00212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Limonoids 1 and 2 share a 6/6/6/5-membered ABCD-ring system and a six-membered oxacycle and differ in their C9-stereochemistries. A new radical-based strategy was devised to construct the pentacyclic skeletons of 1 and 2. An oxacycle-fused A-ring and enyne fragments were coupled to produce radical precursors 4a-4c with different C7-oxygen functionalities. The bridgehead tertiary bromide of 4a-4c participated in a radical cascade reaction with the three unsaturated bonds to cyclize the C9-diastereomeric BCD-rings.
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Affiliation(s)
- Hiroyuki Mutoh
- Graduate School of Pharmaceutical Sciences, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shu Nakamura
- Graduate School of Pharmaceutical Sciences, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Koichi Hagiwara
- Graduate School of Pharmaceutical Sciences, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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8
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Yang G, Zhu M, Zhao X, Lei J, Xu L. A new route to BCD tricyclic fragment of C19-diterpenoid alkaloids via intramolecular Pauson-Khand reaction followed by anionic 1,2-migration rearrangement. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Shimakawa T, Hagiwara K, Inoue M. Total Synthesis of Talatisamine: Exploration of Convergent Synthetic Strategies. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tsukasa Shimakawa
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Koichi Hagiwara
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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10
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Urabe D, Fukaya K. Systematic Search for Transition States in Complex Molecules: Computational Analyses of Regio- and Stereoselective Interflavan Bond Formation in Flavan-3-ols. HETEROCYCLES 2021. [DOI: 10.3987/rev-20-943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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11
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Liu W, Yue Z, Wang Z, Li H, Lei X. Syntheses of Skeletally Diverse Tetracyclic Isodon Diterpenoid Scaffolds Guided by Dienyne Radical Cyclization Logic. Org Lett 2020; 22:7991-7996. [PMID: 33021378 DOI: 10.1021/acs.orglett.0c02920] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We report herein the diversity-oriented synthesis of various tetracyclic Isodon diterpenoid scaffolds guided by radical cyclization logic. Our substrate-based dienyne radical cyclization approach is distinctive from reagent-based rearrangement approaches that are generally applied in biosynthesis or previous synthetic studies. An unprecedented cyclization at C14 via 1,5-radical translocation/5-exo-trig cyclization is observed, which enriches our radical cyclization pattern. Furthermore, biological evaluations revealed that several new natural product-like compounds showed promising anticancer activities against various cancer cell lines.
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12
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Minagawa K, Kamakura D, Hagiwara K, Inoue M. Construction of the ABCE-ring structure of talatisamine via decarboxylative radical cyclization. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131385] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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14
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Bonjoch J, Diaba F. Radical Reactions in Alkaloid Synthesis: A Perspective from Carbon Radical Precursors. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000391] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Josep Bonjoch
- Laboratori de Química Orgànica Facultat de Farmàcia, IBUB Universitat de Barcelona Av. Joan XXIII s/n 08028 Barcelona Spain
| | - Faiza Diaba
- Laboratori de Química Orgànica Facultat de Farmàcia, IBUB Universitat de Barcelona Av. Joan XXIII s/n 08028 Barcelona Spain
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15
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Cao SY, Yue HJ, Zhu MQ, Xu L. Synthesis of tricyclo[7.2.1.09,10]dodecan-11-one core ring systems of norditerpenoid alkaloids and racemulosine. Org Chem Front 2020. [DOI: 10.1039/d0qo00088d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A synthetic strategy involving [2 + 2] enyne cycloaddition and pinacol rearrangement to construct common BCD ring systems of norditerpenoid alkaloids and racemulosine was developed.
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Affiliation(s)
- Su-Yan Cao
- Key Laboratory of Drug Targeting
- Ministry of Education
- and Department of Chemistry of Medicinal Natural Products
- West China College of Pharmacy
- Sichuan University
| | - Hui-Jie Yue
- Key Laboratory of Drug Targeting
- Ministry of Education
- and Department of Chemistry of Medicinal Natural Products
- West China College of Pharmacy
- Sichuan University
| | - Meng-Qian Zhu
- Key Laboratory of Drug Targeting
- Ministry of Education
- and Department of Chemistry of Medicinal Natural Products
- West China College of Pharmacy
- Sichuan University
| | - Liang Xu
- Key Laboratory of Drug Targeting
- Ministry of Education
- and Department of Chemistry of Medicinal Natural Products
- West China College of Pharmacy
- Sichuan University
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16
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Kamakura D, Todoroki H, Urabe D, Hagiwara K, Inoue M. Total Synthesis of Talatisamine. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Daiki Kamakura
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Hidenori Todoroki
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Daisuke Urabe
- Faculty of Engineering Toyama Prefectural University 5180 Kurokawa, Imizu-shi Toyama 939-0398 Japan
| | - Koichi Hagiwara
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
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17
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Kamakura D, Todoroki H, Urabe D, Hagiwara K, Inoue M. Total Synthesis of Talatisamine. Angew Chem Int Ed Engl 2019; 59:479-486. [PMID: 31677324 DOI: 10.1002/anie.201912737] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Indexed: 12/15/2022]
Abstract
Talatisamine (1) is a member of the C19 -diterpenoid alkaloid family, and exhibits K+ channel inhibitory and antiarrhythmic activities. The formidable synthetic challenge that 1 presents is due to its highly oxidized and intricately fused hexacyclic 6/7/5/6/6/5-membered-ring structure (ABCDEF-ring) with 12 contiguous stereocenters. Here we report an efficient synthetic route to 1 by the assembly of two structurally simple fragments, chiral 6/6-membered AE-ring 7 and aromatic 6-membered D-ring 6. AE-ring 7 was constructed from 2-cyclohexenone (8) through fusing an N-ethylpiperidine ring by a double Mannich reaction. After coupling 6 with 7, an oxidative dearomatization/Diels-Alder reaction sequence generated fused pentacycle 4 b. The newly formed 6/6-membered ring system was then stereospecifically reorganized into the 7/5-membered BC-ring of 3 via a Wagner-Meerwein rearrangement. Finally, Hg(OAc)2 induced an oxidative aza-Prins cyclization of 2, thereby forging the remaining 5-membered F-ring. The total synthesis of 1 was thus accomplished by optimizing and orchestrating 33 transformations from 8.
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Affiliation(s)
- Daiki Kamakura
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hidenori Todoroki
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Daisuke Urabe
- Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu-shi, Toyama, 939-0398, Japan
| | - Koichi Hagiwara
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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18
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Zhou RJ, Dai GY, Zhou XH, Zhang MJ, Wu PZ, Zhang D, Song H, Liu XY, Qin Y. Progress towards the synthesis of aconitine: construction of the AE fragment and attempts to access the pentacyclic core. Org Chem Front 2019. [DOI: 10.1039/c8qo01228h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We reported the first successful preparation of fully functionalized aconitine AE fragment and attempts to access the pentacyclic skeleton of aconitine via radical cascade.
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Affiliation(s)
- Rui-Jie Zhou
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Gui-Ying Dai
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Xiao-Han Zhou
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Min-Jie Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Ping-Zhou Wu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Dan Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
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19
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Kerschgens I, Rovira AR, Sarpong R. Total Synthesis of (−)-Xishacorene B from (R)-Carvone Using a C–C Activation Strategy. J Am Chem Soc 2018; 140:9810-9813. [DOI: 10.1021/jacs.8b05832] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isabel Kerschgens
- Department of Chemistry, University of California−Berkeley, Berkeley, California 94720, United States
| | - Alexander R. Rovira
- Department of Chemistry, University of California−Berkeley, Berkeley, California 94720, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California−Berkeley, Berkeley, California 94720, United States
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20
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Nishiyama Y, Yokoshima S, Fukuyama T. Synthesis of Cardiopetaline via a Wagner-Meerwein Rearrangement without Preactivation of the Pivotal Hydroxy Group. Org Lett 2018; 19:5833-5835. [PMID: 29039205 DOI: 10.1021/acs.orglett.7b02812] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A synthesis of cardiopetaline has been accomplished via a Wagner-Meerwein rearrangement of a diol having the denudatine skeleton. The Wagner-Meerwein rearrangement could be facilitated simply by heating the diol with p-toluenesulfonic acid in pivalic acid, without preactivating the pivotal hydroxy group. This strategy does not require differentiation of several hydroxy groups in the substrate for the Wagner-Meerwein rearrangement and could be applied to the synthesis of more highly oxygenated aconitine-type diterpenoid alkaloids.
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Affiliation(s)
- Yoshitake Nishiyama
- Graduate School of Pharmaceutical Sciences, Nagoya University , Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan.,Graduate School of Pharmaceutical Sciences, University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Satoshi Yokoshima
- Graduate School of Pharmaceutical Sciences, Nagoya University , Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences, Nagoya University , Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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21
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Urabe D. The Computational Examination of the Stereoselective Radical Cyclization of the Complex Molecules. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daisuke Urabe
- Department of Biotechnology, Toyama Prefectural University
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22
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Lv Z, Gao L, Cheng C, Niu W, Wang JL, Xu L. Expedient Construction of the Hexacycle of Franchetine. Chem Asian J 2018; 13:955-958. [PMID: 29570243 DOI: 10.1002/asia.201800116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 02/12/2018] [Indexed: 11/06/2022]
Abstract
Franchetine, a unique 7,17-seco type of norditerpenoid alkaloid, possesses a highly congested polycyclic architecture coupled with nine stereogenic centers. Here we present an efficient synthetic approach for the intact hexacyclic framework of franchetine from the known tricyle 16 in 20 steps. The synthesis features a diastereoselective 6-exo-tet radical cyclization for construction of ring A and a unique oxidative Wagner-Meerwein-type rearrangement to realize the functionalized [3.2.1] bridging ring CD.
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Affiliation(s)
- Zhengchao Lv
- Key Laboratory of Drug Targeting, Ministry of Education Department of Chemistry of Medicinal Natural Products, West China College of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Lingzhi Gao
- Key Laboratory of Drug Targeting, Ministry of Education Department of Chemistry of Medicinal Natural Products, West China College of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Chuanxu Cheng
- Key Laboratory of Drug Targeting, Ministry of Education Department of Chemistry of Medicinal Natural Products, West China College of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Wei Niu
- Key Laboratory of Drug Targeting, Ministry of Education Department of Chemistry of Medicinal Natural Products, West China College of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Jian-Li Wang
- State Key Laboratory of Oral disease, West China School of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
| | - Liang Xu
- Key Laboratory of Drug Targeting, Ministry of Education Department of Chemistry of Medicinal Natural Products, West China College of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China.,State Key Laboratory of Oral disease, West China School of Stomatology, Sichuan University, Chengdu, 610041, P. R. China
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23
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Liu M, Cheng C, Xiong W, Cheng H, Wang JL, Xu L. Total synthesis of C19-diterpenoid alkaloid: construction of a functionalized ABCDE-ring system. Org Chem Front 2018. [DOI: 10.1039/c8qo00143j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient synthetic approach for the ABCDE ring system of methyllycaconitine starting from a BCD tricycle precursor was developed.
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Affiliation(s)
- Mengchen Liu
- Key Laboratory of Drug Targeting
- Ministry of Education
- and Department of Chemistry of Medicinal Natural Products
- West China College of Pharmacy
- Sichuan University
| | - Chuanxu Cheng
- Key Laboratory of Drug Targeting
- Ministry of Education
- and Department of Chemistry of Medicinal Natural Products
- West China College of Pharmacy
- Sichuan University
| | - Weiyan Xiong
- Key Laboratory of Drug Targeting
- Ministry of Education
- and Department of Chemistry of Medicinal Natural Products
- West China College of Pharmacy
- Sichuan University
| | - Hang Cheng
- Key Laboratory of Drug Targeting
- Ministry of Education
- and Department of Chemistry of Medicinal Natural Products
- West China College of Pharmacy
- Sichuan University
| | - Jian-Li Wang
- State Key Laboratory of Oral Disease
- West China School of Stomatology
- Sichuan University
- Chengdu 610041
- P. R. China
| | - Liang Xu
- Key Laboratory of Drug Targeting
- Ministry of Education
- and Department of Chemistry of Medicinal Natural Products
- West China College of Pharmacy
- Sichuan University
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24
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Zhou XH, Liu Y, Zhou RJ, Song H, Liu XY, Qin Y. Construction of the highly oxidized bicyclo[3.2.1]octane CD ring system of aconitine via a late stage enyne cycloisomerization. Chem Commun (Camb) 2018; 54:12258-12261. [PMID: 30318536 DOI: 10.1039/c8cc06819d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enyne cycloisomerization enables assembly of the highly oxidized bicyclo[3.2.1]octane CD rings of the complex diterpenoid alkaloid aconitine.
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Affiliation(s)
- Xiao-Han Zhou
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Sichuan University
- Chengdu 610041
- P. R. China
| | - Ying Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Sichuan University
- Chengdu 610041
- P. R. China
| | - Rui-Jie Zhou
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Sichuan University
- Chengdu 610041
- P. R. China
| | - Hao Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Sichuan University
- Chengdu 610041
- P. R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Sichuan University
- Chengdu 610041
- P. R. China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Sichuan University
- Chengdu 610041
- P. R. China
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25
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Yang X, Cheng B, Cheng H, Xu L, Wang JL. Rapid construction of the unique BCD ring system of tricyclo[6.2.1.0]undecane in the C 19 -diterpenoid alkaloid aconitine. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.03.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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Minagawa K, Urabe D, Inoue M. A three-component coupling approach to the ACE-ring substructure of C19-diterpene alkaloids. J Antibiot (Tokyo) 2017; 71:326-332. [DOI: 10.1038/ja.2017.69] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/01/2017] [Accepted: 05/07/2017] [Indexed: 11/09/2022]
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27
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Liu XY, Qin Y. Enabling syntheses of diterpenoid alkaloids and related diterpenes by an oxidative dearomatization/Diels–Alder cycloaddition strategy. Nat Prod Rep 2017; 34:1044-1050. [PMID: 28799605 DOI: 10.1039/c7np00033b] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Recent accomplishments in the total syntheses of diterpenoid alkaloids and their biosynthetically associated diterpenes have highly relied on an oxidative dearomatization/Diels–Alder cycloaddition strategy, and are highlighted in this article.
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Affiliation(s)
- Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
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28
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Li XH, Zhu M, Wang ZX, Liu XY, Song H, Zhang D, Wang FP, Qin Y. Synthesis of Atisine, Ajaconine, Denudatine, and Hetidine Diterpenoid Alkaloids by a Bioinspired Approach. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609882] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Xiao-Huan Li
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Min Zhu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Zhi-Xiu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Dan Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Feng-Peng Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
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29
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Li XH, Zhu M, Wang ZX, Liu XY, Song H, Zhang D, Wang FP, Qin Y. Synthesis of Atisine, Ajaconine, Denudatine, and Hetidine Diterpenoid Alkaloids by a Bioinspired Approach. Angew Chem Int Ed Engl 2016; 55:15667-15671. [PMID: 27860043 DOI: 10.1002/anie.201609882] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Indexed: 02/02/2023]
Affiliation(s)
- Xiao-Huan Li
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Min Zhu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Zhi-Xiu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Dan Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Feng-Peng Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
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30
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Tabuchi T, Urabe D, Inoue M. Construction of the Fused Pentacycle of Talatisamine via a Combination of Radical and Cationic Cyclizations. J Org Chem 2016; 81:10204-10213. [DOI: 10.1021/acs.joc.6b01011] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Toshiki Tabuchi
- Graduate School of Pharmaceutical
Sciences, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Daisuke Urabe
- Graduate School of Pharmaceutical
Sciences, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical
Sciences, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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