1
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Yang ZN, Rao H, Yin Y, Mu S, Jia Z, Ding H. Forging the Tetracyclic Core Framework of Rhodomolleins XIV and XLII: A Ring-Distortion Approach. Org Lett 2024; 26:3524-3529. [PMID: 38656200 DOI: 10.1021/acs.orglett.4c00885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
A ring distortion approach for the synthesis of an advanced intermediate en route to rhodomolleins XIV and XLII was described, which led to successful construction of the 5/8/5/5 tetracyclic core framework of the kalmane diterpenoids. Key steps of the strategy include an oxidative dearomatization-induced (ODI)-Diels-Alder cycloaddition, a Dowd-Beckwith rearrangement, and a bioinspired Wagner-Meerwein rearrangement.
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Affiliation(s)
- Zhen-Ning Yang
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Huijuanzi Rao
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Yuhao Yin
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Shan Mu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Ziqi Jia
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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2
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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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3
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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: 0] [Impact Index Per Article: 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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4
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Qasem AMA, Rowan MG, Blagbrough IS. Poisonous Piperidine Plants and the Biodiversity of Norditerpenoid Alkaloids for Leads in Drug Discovery: Experimental Aspects. Int J Mol Sci 2022; 23:ijms232012128. [PMID: 36292987 PMCID: PMC9603787 DOI: 10.3390/ijms232012128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/04/2022] [Accepted: 10/07/2022] [Indexed: 11/16/2022] Open
Abstract
There are famous examples of simple (e.g., hemlock, Conium maculatum L.) and complex (e.g., opium poppy, Papaver somniferum L., Papaveraceae) piperidine-alkaloid-containing plants. Many of these are highly poisonous, whilst pepper is well-known gastronomically, and several substituted piperidine alkaloids are therapeutically beneficial as a function of dose and mode of action. This review covers the taxonomy of the genera Aconitum, Delphinium, and the controversial Consolida. As part of studying the biodiversity of norditerpenoid alkaloids (NDAS), the majority of which possess an N-ethyl group, we also quantified the fragment occurrence count in the SciFinder database for NDA skeletons. The wide range of NDA biodiversity is also captured in a review of over 100 recently reported isolated alkaloids. Ring A substitution at position 1 is important to determine the NDA skeleton conformation. In this overview of naturally occurring highly oxygenated NDAs from traditional Aconitum and Delphinium plants, consideration is given to functional effect and to real functional evidence. Their high potential biological activity makes them useful candidate molecules for further investigation as lead compounds in the development of selective drugs.
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5
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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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6
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Zhou HF, Li WY, Peng LY, Li XN, Zuo ZL, Zhao QS. Rhynchines A-E: Ca v3.1 Calcium Channel Blockers from Uncaria rhynchophylla. Org Lett 2021; 23:9463-9467. [PMID: 34818888 DOI: 10.1021/acs.orglett.1c03641] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rhynchines A-E (1-5), five new indole alkaloids with an unprecedented skeleton, were isolated from Uncaria rhynchophylla. The new skeleton was characterized by an indole moiety and a 2-oxa-8-azatricyclo[6,5,01,5,01,8]tridecane core, forming a unique 6/5/7/5/5 ring system. Their structures were determined by nuclear magnetic resonance, high-resolution electrospray ionization mass spectrometry, infrared spectroscopy, and calculated electronic circular dichroism (ECD) and were confirmed by X-ray crystallography. Interestingly, 1 and 2 showed strong inhibitory activities against the Cav3.1 calcium channel with IC50 values of 6.86 and 10.41 μM.
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Affiliation(s)
- Hao-Feng Zhou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Wen-Yan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Li-Yan Peng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Zhi-Li Zuo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Qin-Shi Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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7
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Wang Y, Tian H, Gui J. Gram-Scale Synthesis of Bufospirostenin A by a Biomimetic Skeletal Rearrangement Approach. J Am Chem Soc 2021; 143:19576-19586. [PMID: 34762408 DOI: 10.1021/jacs.1c10067] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Bufospirostenin A, which was the first spirostanol to be isolated from an animal, possesses an unprecedented 5/7/6/5/5/6 hexacyclic framework. Herein, we report two biomimetic syntheses of this natural product in just seven or nine steps from a readily available steroidal lactone. Key features of the syntheses include a photosantonin rearrangement and a Wagner-Meerwein rearrangement for rapid construction of the rearranged A/B ring system, as well as a cobalt-mediated olefin hydroselenylation and a selenide E2 reaction to accomplish a challenging olefin transposition. Our syntheses provide experimental support for the biogenetic pathway to 5(10→1)abeo-steroids that we have proposed.
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Affiliation(s)
- Yu Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai200032, China
| | - Hailong Tian
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai200032, China
| | - Jinghan Gui
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai200032, China
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8
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Mao L, Jin B, Chen L, Tian M, Ma R, Yin B, Zhang H, Guo J, Tang J, Chen T, Lai C, Cui G, Huang L. Functional identification of the terpene synthase family involved in diterpenoid alkaloids biosynthesis in Aconitum carmichaelii. Acta Pharm Sin B 2021; 11:3310-3321. [PMID: 34729318 PMCID: PMC8546855 DOI: 10.1016/j.apsb.2021.04.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/22/2021] [Accepted: 04/02/2021] [Indexed: 02/07/2023] Open
Abstract
Aconitum carmichaelii is a high-value medicinal herb widely used across China, Japan, and other Asian countries. Aconitine-type diterpene alkaloids (DAs) are the characteristic compounds in Aconitum. Although six transcriptomes, based on short-read next generation sequencing technology, have been reported from the Aconitum species, the terpene synthase (TPS) corresponding to DAs biosynthesis remains unidentified. We apply a combination of Pacbio isoform sequencing and RNA sequencing to provide a comprehensive view of the A. carmichaelii transcriptome. Nineteen TPSs and five alternative splicing isoforms belonging to TPS-b, TPS-c, and TPS-e/f subfamilies were identified. In vitro enzyme reaction analysis functional identified two sesqui-TPSs and twelve diTPSs. Seven of the TPS-c subfamily genes reacted with GGPP to produce the intermediate ent-copalyl diphosphate. Five AcKSLs separately reacted with ent-CPP to produce ent-kaurene, ent-atiserene, and ent-13-epi-sandaracopimaradie: a new diterpene found in Aconitum. AcTPSs gene expression in conjunction DAs content analysis in different tissues validated that ent-CPP is the sole precursor to all DAs biosynthesis, with AcKSL1, AcKSL2s and AcKSL3-1 responsible for C20 atisine and napelline type DAs biosynthesis, respectively. These data clarified the molecular basis for the C20-DAs biosynthetic pathway in A. carmichaelii and pave the way for further exploration of C19-DAs biosynthesis in the Aconitum species.
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Affiliation(s)
- Liuying Mao
- College of Pharmacy, Shandong University of Chinese Medicine, Jinan 250355, China
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Baolong Jin
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Lingli Chen
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Mei Tian
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Rui Ma
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Biwei Yin
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Haiyan Zhang
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Juan Guo
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Jinfu Tang
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Tong Chen
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Changjiangsheng Lai
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Guanghong Cui
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Luqi Huang
- College of Pharmacy, Shandong University of Chinese Medicine, Jinan 250355, China
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
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9
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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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10
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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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11
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Schuppe AW, Liu Y, Newhouse TR. An invocation for computational evaluation of isomerization transforms: cationic skeletal reorganizations as a case study. Nat Prod Rep 2021; 38:510-527. [PMID: 32931541 PMCID: PMC7956923 DOI: 10.1039/d0np00005a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Covering: 2010 to 2020This review article describes how cationic rearrangement reactions have been used in natural product total synthesis over the last decade as a case study for the many productive ways by which isomerization reactions are enabling for synthesis. This review argues that isomerization reactions in particular are well suited for computational evaluation, as relatively simple calculations can provide significant insight.
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Affiliation(s)
- Alexander W Schuppe
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06511-8107, USA.
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12
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Aconapelsulfonines A and B, seco C20-diterpenoid alkaloids deriving via Criegee rearrangements of napelline skeleton from Aconitum carmichaelii. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.09.062] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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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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14
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15
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McCowen SV, Doering NA, Sarpong R. Retrosynthetic strategies and their impact on synthesis of arcutane natural products. Chem Sci 2020; 11:7538-7552. [PMID: 33552460 PMCID: PMC7860588 DOI: 10.1039/d0sc01441a] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 04/20/2020] [Indexed: 01/18/2023] Open
Abstract
Decisions, decisions, decisions: the interplay between different retrosynthetic strategies in the synthesis of the highly bridged, polycyclic arcutane natural products.
Retrosynthetic analysis is a cornerstone of modern natural product synthesis, providing an array of tools for disconnecting structures. However, discussion of retrosynthesis is often limited to the reactions used to form selected bonds in the forward synthesis. This review details three strategies for retrosynthesis, focusing on how they can be combined to plan the synthesis of polycyclic natural products, such as atropurpuran and the related arcutane alkaloids. Recent syntheses of natural products containing the arcutane framework showcase how these strategies for retrosynthesis can be combined to plan the total synthesis of highly caged scaffolds. Comparison of multiple syntheses of the same target provides a unique opportunity for detailed analysis of the impact of retrosynthetic disconnections on synthesis outcomes.
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Affiliation(s)
- Shelby V McCowen
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
| | - Nicolle A Doering
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
| | - Richmond Sarpong
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
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16
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Klychnikov MK, Pohl R, Císařová I, Jahn U. Application of the Brook Rearrangement in Tandem with Single Electron Transfer Oxidative and Radical Processes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Mikhail K. Klychnikov
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Faculty of Science; Charles University in Prague; Hlavova 2030/8 12843 Prague 2 Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo náměstí 2 16610 Prague 6 Czech Republic
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17
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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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18
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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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19
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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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20
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Yu K, Yang Z, Liu C, Wu S, Hong X, Zhao X, Ding H. Total Syntheses of Rhodomolleins XX and XXII: A Reductive Epoxide‐Opening/Beckwith–Dowd Approach. Angew Chem Int Ed Engl 2019; 58:8556-8560. [DOI: 10.1002/anie.201903349] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Kuan Yu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Zhen‐Ning Yang
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Chun‐Hui Liu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Shao‐Qi Wu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Xin Hong
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Xiao‐Li Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesDepartment of ChemistryEast China Normal University Shanghai 200062 China
| | - Hanfeng Ding
- Department of ChemistryZhejiang University Hangzhou 310058 China
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21
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Yu K, Yang Z, Liu C, Wu S, Hong X, Zhao X, Ding H. Total Syntheses of Rhodomolleins XX and XXII: A Reductive Epoxide‐Opening/Beckwith–Dowd Approach. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kuan Yu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Zhen‐Ning Yang
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Chun‐Hui Liu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Shao‐Qi Wu
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Xin Hong
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Xiao‐Li Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesDepartment of ChemistryEast China Normal University Shanghai 200062 China
| | - Hanfeng Ding
- Department of ChemistryZhejiang University Hangzhou 310058 China
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22
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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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23
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Liu YY, Ao Z, Xue GM, Wang XB, Luo JG, Kong LY. Hypatulone A, a Homoadamantane-Type Acylphloroglucinol with an Intricately Caged Core from Hypericum patulum. Org Lett 2018; 20:7953-7956. [DOI: 10.1021/acs.orglett.8b03523] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yang-Yang Liu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People’s Republic of China
| | - Zhen Ao
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People’s Republic of China
| | - Gui-Min Xue
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People’s Republic of China
| | - Xiao-Bing Wang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People’s Republic of China
| | - Jian-Guang Luo
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People’s Republic of China
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People’s Republic of China
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24
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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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25
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Liu F, Zhang Y, Wang H, Zhang S. Novel Conjugated Polymers Prepared by Direct (Hetero) arylation: An Eco-Friendly Tool for Organic Electronics. Molecules 2018; 23:E408. [PMID: 29438329 PMCID: PMC6017795 DOI: 10.3390/molecules23020408] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 02/08/2018] [Accepted: 02/13/2018] [Indexed: 11/16/2022] Open
Abstract
The phthalimide (PhI) moiety has been attracting more attention as an excellent acceptor building block in donor-acceptor (D-A) conjugated polymers. In this paper; three D-A conjugated polymers with or without thiocarbonyl moieties are successfully prepared by the direct (hetero)-arylation polymerization (DHAP), which is an atom efficient and facile synthetic strategy to obtain polymer materials. Compared with the traditional carbon-carbon coupling reactions, this method possesses more advantages, including: fewer synthetic steps, avoidance of the preparation of the organometallic reagents, higher atom economy and fewer toxic byproducts, better compatibility with chemically sensitive functional groups and so on. All three of these designed PhI-based polymers exhibited favourable optoelectronic and thermal performance. The optical, thermodynamic and electrochemical properties of the synthesized polymers were systematically investigated using ultraviolet-visible (UV-vis) spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and cyclic voltammetry (CV). The results of these three polymers indicated that thionation of the carbonyl was a highly effective methods to improve the properties of PhI-based polymers; and provided impetus for the development of thionated PhI derivatives for organic electronic applications.
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Affiliation(s)
- Fuchuan Liu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), 30 South Puzhu Road, Nanjing 211816, China.
| | - Yangqian Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), 30 South Puzhu Road, Nanjing 211816, China.
| | - Hang Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), 30 South Puzhu Road, Nanjing 211816, China.
| | - Shiming Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), 30 South Puzhu Road, Nanjing 211816, China.
- Nanjing Kuo Hua Electronics Technology Pte. Ltd., Innovation Building B816, Xinmofan Road 5, Nanjing 210009, China.
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26
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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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27
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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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