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Liu H, Yuan W, Ran MY, Wei G, Zhao Y, Liao ZQ, Liang H, Chen ZF, Wang FX. Total Synthesis of Quebrachamine and Kopsiyunnanine D. J Org Chem 2024; 89:5905-5910. [PMID: 38579179 DOI: 10.1021/acs.joc.4c00363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2024]
Abstract
The total syntheses of (±)-quebrachamine and (±)-kopsiyunnanine D are reported. Key transformations include an intermolecular Horner-Wadsworth-Emmons olefination to merge the two fragments convergently and an intramolecular Mitsunobu reaction to introduce the synthetically challenging nine-membered azonane ring efficiently.
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Affiliation(s)
- Hui Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Wei Yuan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Meng-Yan Ran
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Gang Wei
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Yi Zhao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Zhi-Qiang Liao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Hong Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Zhen-Feng Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Fang-Xin Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
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2
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Kowalska J, Łukasik B, Frankowski S, Albrecht Ł. Hydrazone Activation in the Aminocatalytic Cascade Reaction for the Synthesis of Tetrahydroindolizines. Org Lett 2024; 26:814-818. [PMID: 38266767 PMCID: PMC10845150 DOI: 10.1021/acs.orglett.3c03911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/10/2024] [Accepted: 01/17/2024] [Indexed: 01/26/2024]
Abstract
In this Letter, we demonstrate the usefulness of hydrazone activation for the synthesis of biologically relevant tetrahydroindolizines. A pyrrol-derived hydrazone bearing a Michael acceptor moiety in the N-alkyl side chain has been designed with the aim of participating in the aminocatalytic cascade reaction leading to the annulation of the new six-membered heterocyclic scaffold. The application of (S)-(-)-α,α-diphenyl-2-pyrrolidinemethanol trimethylsilyl ether as the aminocatalyst allows for the iminium ion-enamine-mediated cascade to proceed in a fully stereoselective manner.
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Affiliation(s)
- Justyna Kowalska
- Institute
of Organic Chemistry, Lodz University of
Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Beata Łukasik
- Institute
of Organic Chemistry, Lodz University of
Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Sebastian Frankowski
- Institute
of Organic Chemistry, Lodz University of
Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Łukasz Albrecht
- Institute
of Organic Chemistry, Lodz University of
Technology, Żeromskiego 116, 90-924 Łódź, Poland
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3
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Chen QH. Crosstalk between Microtubule Stabilizing Agents and Prostate Cancer. Cancers (Basel) 2023; 15:3308. [PMID: 37444418 DOI: 10.3390/cancers15133308] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/20/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
A variety of microtubule-stabilizing cytotoxic agents (MSA) with diverse chemical scaffolds have been discovered from marine sponges, microorganisms, and plants. Two MSAs, docetaxel and cabazitaxel, are the exclusive chemotherapeutics that convey a survival benefit in patients with castration-resistant prostate cancer (CRPC). Additional MSAs have been investigated for their potential in treating prostate cancer in both clinical and preclinical settings. Independent of promoting mitotic arrest, MSAs can suppress the nuclear accumulation of androgen receptor (AR), which is the driving force for prostate cancer cell growth and progression. The alternative mechanism not only helps to better understand the clinical efficacy of docetaxel and cabazitaxel for AR-driven CRPC but also provides an avenue to seek better treatments for various forms of prostate cancer. The dual mechanisms of action enable MSAs to suppress AR-null prostate cancer cell proliferation by cell mitosis pathway and to interfere with the AR signaling pathway in AR positive cells. MSA chemotherapeutics, being administered alone or in combination with other therapeutics, may serve as the optimal therapeutic option for patients with either castration-sensitive or castration-resistant prostate cancer. This review provides an overview of the anti-prostate cancer profiles (including preclinical and clinical studies, and clinical use) of diverse MSAs, as well as the mechanism of action.
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Affiliation(s)
- Qiao-Hong Chen
- Department of Chemistry and Biochemistry, California State University, Fresno, CA 93740, USA
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4
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García-Ramírez J, González-Cortés LA, Miranda LD. A Modular Synthesis of the Rhazinilam Family of Alkaloids and Analogs Thereof. Org Lett 2022; 24:8093-8097. [PMID: 36095152 DOI: 10.1021/acs.orglett.2c02446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A short, modular strategy for synthesizing three representative alkaloids of the (±)-rhazinilam family and 10 non-natural analogs is described. The protocol involves a radical addition/cyclization cascade reaction that assembles the tetrahydroindolizine system decorated with appropriate groups for a subsequent Pd-mediated cyclization, which generates the nine-membered lactam.
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Affiliation(s)
- Jazmín García-Ramírez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S. N., Ciudad Universitaria, Ciudad de México, 04510, Mexico
| | - Luis A González-Cortés
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S. N., Ciudad Universitaria, Ciudad de México, 04510, Mexico
| | - Luis D Miranda
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S. N., Ciudad Universitaria, Ciudad de México, 04510, Mexico
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5
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Hop NQ, Son NT. A comprehensive review on phytochemistry and pharmacology of genus Kopsia: monoterpene alkaloids - major secondary metabolites. RSC Adv 2022; 12:19171-19208. [PMID: 35865593 PMCID: PMC9253876 DOI: 10.1039/d2ra01791a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 06/21/2022] [Indexed: 11/21/2022] Open
Abstract
Kopsia belongs to the family Apocynaceae, which was originally classified as a genus in 1823. Kopsia consists of medicinal plants that can be traditionally used to treat rheumatoid arthritis, pharyngitis, tonsillitis, and dropsy. More than one hundred and twenty-five publications have been documented relating to the phytochemical and pharmacological results, but a systematic review is not available. The goal of this study is to compile almost all of the secondary metabolites from the plants of genus Kopsia, as well as the coverage of their pharmacological research. The document findings were conducted via reliable sources, including Web of Science, Sci-Finder, Science Direct, PubMed, Google Scholar, and publishers, while four words "Kopsia", "monoterpene alkaloids", "Phytochemistry" and "Pharmacology" are key factors to search for references. Most Kopsia secondary metabolites were collected. A total of four hundred and seventy-two, including four hundred and sixty-six monoterpene alkaloids, five triterpenoids, and one sterol, were summarized, along with their resource. Kopsia monoterpene alkaloids presented in various skeletons, but aspidofractinines, eburnamines, and chanofruticosinates are the three major backbones. Mersinines and pauciflorines are new chemical classes of monoterpene alkaloids. With the rich content of monoterpene alkaloids, Kopsia constituents were also the main objects in pharmacological studies since the plant extracts and isolated compounds were proposed for anti-microbial, anti-inflammatory, anti-allergic, anti-diabetic, anti-manic, anti-nociceptive, acetylcholinesterase (AChE) inhibitory, cardiovascular, and vasorelaxant activities, especially cytotoxicity.
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Affiliation(s)
- Nguyen Quang Hop
- Faculty of Chemistry, Hanoi Pedagogical University 2 (HPU2) Nguyen Van Linh, Xuanhoa Phucyen Vinhphuc Vietnam
| | - Ninh The Son
- Institute of Chemistry, Vietnam Academy of Science and Technology (VAST) 18 Hoang Quoc Viet, Caugiay Hanoi Vietnam
- Graduate University of Science and Technology, VAST Vietnam
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Sirindil F, Weibel JM, Pale P, Blanc A. Rhazinilam-leuconolam family of natural products: a half century of total synthesis. Nat Prod Rep 2022; 39:1574-1590. [PMID: 35699109 DOI: 10.1039/d2np00026a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: 1972 to 2021The rhazinilam family of natural products exhibits a main structure with a stereogenic quaternary carbon and a tetrahydroindolizine core imbedded within a 9-membered macrocycle, imposing axial chirality. This unique architecture combined with their taxol-like antimitotic activities have attracted various attention, especially from synthetic chemists, notably in the past decade. The present review describes the known total and formal syntheses of the members of the rhazinilam family (rhazinilam, rhazinal, leuconolam and kopsiyunnanines), according to the strategy developed.
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Affiliation(s)
- Fatih Sirindil
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
| | - Jean-Marc Weibel
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
| | - Patrick Pale
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
| | - Aurélien Blanc
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
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7
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Heravi MM, Abedian‐Dehaghani N, Zadsirjan V, Rangraz Y. Catalytic Function of Cu (I) and Cu (II) in Total Synthesis of Alkaloids. ChemistrySelect 2021. [DOI: 10.1002/slct.202101130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Majid M. Heravi
- Department of Chemistry School of Physics and Chemistry Alzahra University, PO.Box 1993891176, Vanak Tehran Iran
| | - Neda Abedian‐Dehaghani
- Department of Chemistry School of Physics and Chemistry Alzahra University, PO.Box 1993891176, Vanak Tehran Iran
| | - Vahideh Zadsirjan
- Department of Chemistry School of Physics and Chemistry Alzahra University, PO.Box 1993891176, Vanak Tehran Iran
| | - Yalda Rangraz
- Department of Chemistry School of Physics and Chemistry Alzahra University, PO.Box 1993891176, Vanak Tehran Iran
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8
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Singh N, Singh S, Kohli S, Singh A, Asiki H, Rathee G, Chandra R, Anderson EA. Recent progress in the total synthesis of pyrrole-containing natural products (2011–2020). Org Chem Front 2021. [DOI: 10.1039/d0qo01574a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review discusses total syntheses of pyrrole-containing natural products over the last ten years, highlighting recent advances in the chemistry of pyrroles in the context of their innate reactivity, and their preparation in complex settings.
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Affiliation(s)
- Nidhi Singh
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Snigdha Singh
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Sahil Kohli
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Aarushi Singh
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Hannah Asiki
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Garima Rathee
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Ramesh Chandra
- Department of Chemistry, University of Delhi, Delhi 110007, India
- Dr B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi 110007, India
| | - Edward A. Anderson
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
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9
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Liu T, Hu J, Li JX, Chen MW. Cytotoxic monoterpenoid indole alkaloids from the aerial parts of Kopsia officinalis. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2020; 22:724-731. [PMID: 31154865 DOI: 10.1080/10286020.2019.1621851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 05/15/2019] [Accepted: 05/17/2019] [Indexed: 06/09/2023]
Abstract
Three new monoterpenoid indole alkaloids, kopsiaofficines A-D (1-3), were isolated from the 95% EtOH extract of the aerial parts of Kopsia officinalis. Their structures were established on the basis of spectroscopic data. The isolated alkaloids were tested in vitro for cytotoxic activity against seven lung cancer cell lines. Consequently, alkaloids 1 and 3 exhibited some cytotoxic activities against all the tested tumor cell lines with IC50 values less than 20 µM.[Formula: see text].
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Affiliation(s)
- Ting Liu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
- Department of General Practice, The Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Jiang Hu
- College of Biological Resources and Food Engineering, Qujing Normal University, Qujing 655011, China
| | - Jia-Xun Li
- Tumor Hospital of Yunnan Province, The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - Ming-Wei Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
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10
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Xie TZ, Zhao YL, He JJ, Zhao LX, Wei X, Liu YP, Luo XD. Monoterpenoid indole alkaloids from the stems of Kopsia officinalis. Fitoterapia 2020; 143:104547. [PMID: 32173419 DOI: 10.1016/j.fitote.2020.104547] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/08/2020] [Accepted: 03/10/2020] [Indexed: 10/24/2022]
Abstract
Five new indole alkaloids, kopsiofficines H-L (1-5), along with fourteen known alkaloids (6-19) were isolated from the stems of Kopsia officinalis. Their structures were elucidated by extensive NMR, mass spectroscopic analyses and comparison to the reported data. All the isolated compounds were evaluated their anti-inflammatory activities by inhibiting IL-1β, PGE2 and TNF-α secretion in lipopolysaccharide (LPS)-activated RAW264.7 cells. Compounds 2, 3, 6, 7, 11, 12, 15, and 17 show significant anti-inflammatory activities. These results demonstrate pharmacodynamic substance basis of these folkloric claims.
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Affiliation(s)
- Tian-Zhen Xie
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Yun-Li Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Jun-Jie He
- Lanzhou University of Technolog, Lanzhou 730050, PR China
| | - Li-Xin Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China
| | - Xin Wei
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Ya-Ping Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China; Yunnan Institute of Food Safety, Kunming University of Science and Technology, Kunming 650500, PR China.
| | - Xiao-Dong Luo
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China.
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11
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Takayama H. Total Syntheses of Lycopodium and Monoterpenoid Indole Alkaloids Based on Biosynthesis-Inspired Strategies. Chem Pharm Bull (Tokyo) 2020; 68:103-116. [PMID: 32009077 DOI: 10.1248/cpb.c19-00872] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The merits of biogenetic considerations in the chemical syntheses of natural products have been emphasized by describing the total syntheses of Lycopodium alkaloids; lycodine, flabellidine, lycopodine, and flabelliformine, as well as monoterpenoid indole alkaloids; C-mavacurine, kopsiyunnanine K, koumine, and 11-methoxy-19R-hydroxygelselegine.
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12
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Sirindil F, Weibel JM, Pale P, Blanc A. Total Synthesis of Rhazinilam through Gold-Catalyzed Cycloisomerization–Sulfonyl Migration and Palladium-Catalyzed Suzuki–Miyaura Coupling of Pyrrolyl Sulfonates. Org Lett 2019; 21:5542-5546. [DOI: 10.1021/acs.orglett.9b01860] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Fatih Sirindil
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg, France
| | - Jean-Marc Weibel
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg, France
| | - Patrick Pale
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg, France
| | - Aurélien Blanc
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg, France
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13
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Pritchett BP, Stoltz BM. Enantioselective palladium-catalyzed allylic alkylation reactions in the synthesis of Aspidosperma and structurally related monoterpene indole alkaloids. Nat Prod Rep 2019; 35:559-574. [PMID: 29658039 DOI: 10.1039/c7np00069c] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: up to the end of 2017 Enantioselective Pd-catalyzed allylic alkylations of prochiral enolates represent a powerful tool for the construction of all-carbon quaternary stereocenters. This review describes the emergence of such reactions as strategic linchpins that enable efficient, stereocontrolled syntheses of Aspidosperma and related monoterpene indole alkaloids.
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Affiliation(s)
- Beau P Pritchett
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125, USA.
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de Almeida VL, Silva CG, Silva AF, Campana PRV, Foubert K, Lopes JCD, Pieters L. Aspidosperma species: A review of their chemistry and biological activities. JOURNAL OF ETHNOPHARMACOLOGY 2019; 231:125-140. [PMID: 30395977 DOI: 10.1016/j.jep.2018.10.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 10/30/2018] [Accepted: 10/30/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Species of Aspidosperma are known popularly as "peroba, guatambu, carapanaúba, pau-pereiro" and "quina". The genus can be found in the Americas, mainly between Mexico and Argentina. Many species of Aspidosperma are used by the population in treating cardiovascular diseases, malaria, fever, diabetes and rheumatism. The phytochemical aspects of the species of the genus Aspidosperma have been studied extensively. The monoterpene indole alkaloids are the main secondary metabolites in Aspidosperma species, and about 250 of them have been isolated showing a considerable structural diversity. Several of them have showed some important pharmacological activities. Aspidosperma subincanum Mart. and Aspidosperma tomentosum Mart. (Apocynaceae) are Brazilian species widely used by the population to treat diabetes mellitus, hypercholesterolemia. The pharmacological activities of both species have been investigated and the biological properties described can be related to their isolated indole alkaloids. However, more pharmacological studies are needed in order to justify the use of these species in folk medicine. In this review, we present reports mainly focused on chemical and biological studies and their relationship with the ethnopharmacological use of both Aspidosperma species. AIM OF THE STUDY The aim of this review is to present their ethnopharmacological use as correlated to their biological activities as described for the extracts and isolated compounds from Aspidosperma subincanum Mart. and Aspidosperma tomentosum Mart. In addition, some aspects related to the biosynthetic pathways are discussed, also NMR assignments and some synthesis information about indole alkaloids from both Aspidosperma species are included. MATERIAL AND METHODS The bibliographic search was made in theses and dissertations using some databases such as NDLTD (Networked Digital Library of Theses and Dissertations), OATD (Open Access Theses and Dissertations) and Google Scholar. More data were gathered from books, Brazilian journals and articles available on electronic databases such as, Google Scholar, PubChem, Scifinder, Web of Science, SciELO, PubMed and Science Direct. Additionally, the Google Patents and Espacenet Patent Search (EPO) were also consulted. The keywords Aspidosperma, A. subincanum, A. tomentosum, indole alkaloids were used in the research. The languages were restricted to Portuguese, English and Spanish and references were selected according to their relevance. RESULTS A. subincanum Mart. and A. tomentosum Mart. (Apocynaceae) are Brazilian species widely used by the population to treat a few diseases. Extracts and isolated compounds of both species have shown antitumor and antimalarial activities. The antitumor activity of isolated compounds has been extensively studied. However, the antiplasmodial activity needs to be investigated further as well as the anti-inflammatory, anti-hyperlipidemic and anorexigenic activities. From A. subincanum twenty-one indole alkaloids were isolated and some of them have been extensively studied. From the leaves and bark of A. tomentosum four alkaloids and one flavonoid were isolated. Furthermore, CG-MS analysis of seeds, branches, leaves and arils identified nine indole alkaloids. Stemmadenine has been proposed as a precursor of indole alkaloids obtained from some species of Aspidosperma. Many of the biosynthetic steps have been characterized at the enzymatic level and appropriate genes have been identified, however, other steps have yet to be investigated and they are still controversial. Some isolated alkaloids from A. subincanum and A. tomentosum were identified only by mass spectrometry. In many cases, their NMR data was either not available or was incomplete. The described meta-analysis of the available NMR data revealed that the chemical shifts belonging to the indole ring might be used to characterize this class of alkaloids within complex matrices such as plant extracts. The biological activities and the structural complexity of these compounds have stimulated the interest of many groups into their synthesis. In this review, some information about the synthesis of indole alkaloids and their derivatives was presented. CONCLUSIONS A. subincanum and A. tomentosum are used by the population of Brazil to treat many diseases. A few biological activities described for the extracts and isolated compounds of both species are in agreement with the ethnopharmacological use for others species of Aspidosperma, such as, antimalarial, the treatment of diabetes and other illnesses. These species are sources of leading compounds which can be used for developing new drugs. In addition, other biological activities reported and suggested by ethnopharmacological data have yet to be investigated and could be an interesting area in the search for new bioactive compounds.
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Affiliation(s)
- Vera Lúcia de Almeida
- Serviço de Fitoquímica e Prospecção Farmacêutica, Divisão de Ciência e Inovação, Fundação Ezequiel Dias, Belo Horizonte, MG, Brazil
| | - Cláudia Gontijo Silva
- Serviço de Fitoquímica e Prospecção Farmacêutica, Divisão de Ciência e Inovação, Fundação Ezequiel Dias, Belo Horizonte, MG, Brazil
| | - Andréia Fonseca Silva
- Herbário PAMG, Departamento de Pesquisa, Empresa de Pesquisa Agropecuária de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Kenn Foubert
- Natural Products & Food Research and Analysis, Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium
| | - Júlio César Dias Lopes
- Chemoinformatics group (NEQUIM), Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Luc Pieters
- Natural Products & Food Research and Analysis, Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium.
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15
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Tooriyama S, Mimori Y, Wu Y, Kogure N, Kitajima M, Takayama H. Asymmetric Total Synthesis of Pentacyclic Indole Alkaloid Andranginine and Absolute Configuration of Natural Product Isolated from Kopsia arborea. Org Lett 2017; 19:2722-2725. [DOI: 10.1021/acs.orglett.7b01076] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shino Tooriyama
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Yuji Mimori
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Yuqiu Wu
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Noriyuki Kogure
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Mariko Kitajima
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Hiromitsu Takayama
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
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16
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Zeng T, Wu XY, Yang SX, Lai WC, Shi SD, Zou Q, Liu Y, Li LM. Monoterpenoid Indole Alkaloids from Kopsia officinalis and the Immunosuppressive Activity of Rhazinilam. JOURNAL OF NATURAL PRODUCTS 2017; 80:864-871. [PMID: 28218521 DOI: 10.1021/acs.jnatprod.6b00697] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Six new monoterpenoid indole alkaloids, kopsinidines C-E (1-3), 11,12-methylenedioxychanofruticosinic acid (4), 12-methoxychanofruticosinic acid (5), and N(4)-methylkopsininate (7), as well as chanofruticosinic acid (6, as a natural product) and 23 known alkaloids, were obtained from the twigs and leaves of Kopsia officinalis. Their structures were characterized by physical data analysis. All isolated compounds were evaluated for their immunosuppressive activity on human T cell proliferation. Rhazinilam (29) significantly inhibited human T cell proliferation activated by anti-CD3/anti-CD28 antibodies (IC50 = 1.0 μM) and alloantigen stimulation (IC50 = 1.1 μM) without obvious cytotoxicity for naïve human T cells and peripheral blood mononuclear cells (0-320 μM). Although it did not affect T cell activation, it induced T cell cycle arrest in the G2/M phase and inhibited proinflammatory cytokine production in activated T cells.
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Affiliation(s)
- Ting Zeng
- Research Center, Chengdu Medical College , Xindu Avenue 783, Chengdu 610500, People's Republic of China
| | - Xiu-Yin Wu
- Research Center, Chengdu Medical College , Xindu Avenue 783, Chengdu 610500, People's Republic of China
| | - Shu-Xia Yang
- Research Center, Chengdu Medical College , Xindu Avenue 783, Chengdu 610500, People's Republic of China
| | - Wei-Chun Lai
- Research Center, Chengdu Medical College , Xindu Avenue 783, Chengdu 610500, People's Republic of China
| | - Shun-Dong Shi
- Research Center, Chengdu Medical College , Xindu Avenue 783, Chengdu 610500, People's Republic of China
| | - Qiang Zou
- Research Center, Chengdu Medical College , Xindu Avenue 783, Chengdu 610500, People's Republic of China
| | - Yang Liu
- Research Center, Chengdu Medical College , Xindu Avenue 783, Chengdu 610500, People's Republic of China
| | - Li-Mei Li
- Research Center, Chengdu Medical College , Xindu Avenue 783, Chengdu 610500, People's Republic of China
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17
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Wang ZW, Shi XJ, Mu Y, Fang L, Chen Y, Lin YL. Three novel indole alkaloids from Kopsia officinalis. Fitoterapia 2017; 119:8-11. [PMID: 28363506 DOI: 10.1016/j.fitote.2017.01.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 01/02/2017] [Accepted: 01/03/2017] [Indexed: 10/19/2022]
Abstract
Three new indole alkaloids, named kopsioffines A-C (1-3), possessing relatively novel ten-membered lactam ring, and one known compound (11,12-demethoxy-16-deoxypauciflorine, 4) were isolated from the leaves and stems of Kopsia officinalis. Their structures were elucidated by means of spectroscopic methods. The absolute configuration of 1 was determined by calculated electronic circular dichroism data. The hypothetical biosynthetic pathway of 1 was postulated. All these isolates were evaluated for their inhibitory effects on α-glucosidase. None of them showed activity with IC50 far beyond 50μM.
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Affiliation(s)
- Zhi-Wei Wang
- Shandong Key Laboratory of TCM Quality Control Technology, Shandong Analysis and Test Center, Shandong Academy of Sciences, 19 Keyuan Street, Jinan, Shandong 250014, China.
| | - Xiao-Jian Shi
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Haike Road 501, Shanghai 201203, China
| | - Yan Mu
- Shandong Key Laboratory of TCM Quality Control Technology, Shandong Analysis and Test Center, Shandong Academy of Sciences, 19 Keyuan Street, Jinan, Shandong 250014, China
| | - Lei Fang
- Shandong Key Laboratory of TCM Quality Control Technology, Shandong Analysis and Test Center, Shandong Academy of Sciences, 19 Keyuan Street, Jinan, Shandong 250014, China
| | - Yue Chen
- Shandong Key Laboratory of TCM Quality Control Technology, Shandong Analysis and Test Center, Shandong Academy of Sciences, 19 Keyuan Street, Jinan, Shandong 250014, China
| | - Yun-Liang Lin
- Shandong Key Laboratory of TCM Quality Control Technology, Shandong Analysis and Test Center, Shandong Academy of Sciences, 19 Keyuan Street, Jinan, Shandong 250014, China
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18
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Pfaffenbach M, Gaich T. The Rhazinilam-Leuconoxine-Mersicarpine Triad of Monoterpenoid Indole Alkaloids. THE ALKALOIDS: CHEMISTRY AND BIOLOGY 2017; 77:1-84. [DOI: 10.1016/bs.alkal.2016.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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19
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Kitajima M, Nakazawa M, Wu Y, Kogure N, Zhang RP, Takayama H. Kopsiyunnanines L and M, Strychnos-related monoterpenoid indole alkaloids from Yunnan Kopsia arborea. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.082] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Zhao K, Xu S, Pan C, Sui X, Gu Z. Catalytically Asymmetric Pd/Norbornene Catalysis: Enantioselective Synthesis of (+)-Rhazinal, (+)-Rhazinilam, and (+)-Kopsiyunnanine C1–3. Org Lett 2016; 18:3782-5. [DOI: 10.1021/acs.orglett.6b01790] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kun Zhao
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Shibo Xu
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Chongqing Pan
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Xianwei Sui
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Zhenhua Gu
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
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21
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Tokuda R, Okamoto Y, Koyama T, Kogure N, Kitajima M, Takayama H. Asymmetric Total Synthesis of Kopsiyunnanine K, a Monoterpenoid Indole Alkaloid with a Rearranged Skeleton. Org Lett 2016; 18:3490-3. [DOI: 10.1021/acs.orglett.6b01704] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ryoko Tokuda
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Yoshiki Okamoto
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Tetsuya Koyama
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Noriyuki Kogure
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Mariko Kitajima
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Hiromitsu Takayama
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
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22
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Sailu M, Muley SS, Das A, Mainkar PS, Chandrasekhar S. Formal total synthesis of (±)-rhazinal and its B-ring carbamate analogue. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.090] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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23
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Kitajima M, Koyama T, Wu Y, Kogure N, Zhang R, Takayama H. Kopsiyunnanines J1 and J2, New Strychnos-type Homo-Monoterpenoid Indole Alkaloids from Kopsia arborea. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Two new indole alkaloids, kopsiyunnanines J1 and J2, were isolated from Yunnan Kopsia arborea, and their structures were determined by spectroscopic analyses. Kopsiyunnanines J1 and J2 are unprecedented Strychnos-type indole alkaloids having an additional C1 unit in the secologanin moiety of the molecule.
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Affiliation(s)
- Mariko Kitajima
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Tetsuya Koyama
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Yuqiu Wu
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Noriyuki Kogure
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Rongping Zhang
- Department of Pharmaceutical Sciences, Kunming Medicinal University, Kunming 650031, Yunnan Province, China
| | - Hiromitsu Takayama
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
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24
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Kitajima M, Anbe M, Kogure N, Wongseripipatana S, Takayama H. Indole alkaloids from Kopsia jasminiflora. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Cheenpracha S, Raksat A, Ritthiwigrom T, Laphookhieo S. Monoterpene Indole Alkaloids from the Twigs of Kopsia arborea. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400901010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The phytochemistry of Kopsia arborea Blume has received considerable attention, which has resulted in the isolation of a number of new unusual indole alkaloids with intriguing structures. In this study, a new eburnane-type alkaloid, phutdonginin (1), together with eight known alkaloids: 19-OH-(-)-eburnamonine (2), melodinine E (3), kopsinine (4), kopsilongine (5), kopsamine (6), (-)-methylenedioxy-11,12-kopsinaline (7), decarbomethoxykopsiline (8), and vincadifformine (9), were isolated from the twigs of K. arborea. Their structures were characterized extensively by 1D and 2D NMR spectroscopy and HR-ESI-MS. All compounds were submitted to TLC screening for acetylcholinesterase inhibitory activities. Only kopsamine and decarbomethoxykopsiline showed AChE inhibition with MIR values of 12.5 and 6.25 μg, respectively, compared with galanthamine (positive control, 0.004 μg). In addition, compounds 1 and 2 inhibited moderate antibacterial activity against E. coli TISTR 780 with the MIC value of 32 μg/mL.
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Affiliation(s)
- Sarot Cheenpracha
- School of Science, University of Phayao, Maeka, Meuang, Phayao 56000, Thailand
| | - Achara Raksat
- School of Science, University of Phayao, Maeka, Meuang, Phayao 56000, Thailand
| | - Thunwadee Ritthiwigrom
- Department of Chemistry, Faculty of Science, Chiang Mai University, Sutep, Meuang, Chiang Mai 50200, Thailand
| | - Surat Laphookhieo
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Meuang, Chiang Rai 57100, Thailand
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26
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Kitajima M, Murakami Y, Takahashi N, Wu Y, Kogure N, Zhang RP, Takayama H. Asymmetric Total Synthesis of Novel Pentacyclic Indole Alkaloid, Kopsiyunnanine E, Isolated from Kopsia arborea. Org Lett 2014; 16:5000-3. [DOI: 10.1021/ol502265q] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Mariko Kitajima
- Graduate
School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Yosuke Murakami
- Graduate
School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Nobuaki Takahashi
- Graduate
School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Yuqiu Wu
- Graduate
School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Noriyuki Kogure
- Graduate
School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Rong-Ping Zhang
- Department
of Pharmaceutical Sciences, Kunming Medicinal University, Kunming 650031, Yunnan Province, China
| | - Hiromitsu Takayama
- Graduate
School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
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27
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Hsu SW, Cheng HY, Huang AC, Ho TL, Hou DR. Total Synthesis of Quebrachamine through Macrolactamization. European J Org Chem 2014. [DOI: 10.1002/ejoc.201400064] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Sui X, Zhu R, Li G, Ma X, Gu Z. Pd-Catalyzed Chemoselective Catellani Ortho-Arylation of Iodopyrroles: Rapid Total Synthesis of Rhazinal. J Am Chem Soc 2013; 135:9318-21. [DOI: 10.1021/ja404494u] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xianwei Sui
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui
230026, China
| | - Rui Zhu
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui
230026, China
| | - Gencheng Li
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui
230026, China
| | - Xinna Ma
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui
230026, China
| | - Zhenhua Gu
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui
230026, China
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29
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Kogure N, Suzuki Y, Wu Y, Kitajima M, Zhang R, Takayama H. Chemical conversion of strychnine into kopsiyunnanine-I, a new hexacyclic indole alkaloid from Yunnan Kopsia arborea. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.09.078] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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McMurray L, Beck EM, Gaunt MJ. Chemical Synthesis of Aspidosperma Alkaloids Inspired by the Reverse of the Biosynthesis of the Rhazinilam Family of Natural Products. Angew Chem Int Ed Engl 2012; 51:9288-91. [DOI: 10.1002/anie.201204151] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Indexed: 11/12/2022]
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31
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McMurray L, Beck EM, Gaunt MJ. Chemical Synthesis of Aspidosperma Alkaloids Inspired by the Reverse of the Biosynthesis of the Rhazinilam Family of Natural Products. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204151] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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32
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Morita H, Eko Nugroho A. Absolute Configurational Elucidation of Monoterpene Indole Alkaloids by Circular Dichroism. HETEROCYCLES 2012. [DOI: 10.3987/rev-11-sr(p)2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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33
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Khan IA, Saxena AK. Employing lactams for the unprecedented enantiopure synthesis of non-natural amino acid derivatives. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.11.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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34
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Zhang H, Conte MM, Huang XC, Khalil Z, Capon RJ. A search for BACE inhibitors reveals new biosynthetically related pyrrolidones, furanones and pyrroles from a southern Australian marine sponge, Ianthella sp. Org Biomol Chem 2012; 10:2656-63. [DOI: 10.1039/c2ob06747a] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Wu Y, Kitajima M, Kogure N, Wang Y, Zhang R, Takayama H. Two new aspidosperma indole alkaloids from Yunnan Kopsia arborea. Chem Pharm Bull (Tokyo) 2010; 58:961-3. [PMID: 20606347 DOI: 10.1248/cpb.58.961] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Two new indole alkaloids, kopsiyunnanines G (1) and H (2), possessing the Aspidosperma skeleton were isolated from the aerial part of Yunnan Kopsia arborea BLUME (Apocynaceae). Their structures and stereochemistry were elucidated by means of MS and 2D NMR analyses.
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Affiliation(s)
- Yuqiu Wu
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
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36
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Ishikura M, Yamada K, Abe T. Simple indole alkaloids and those with a nonrearranged monoterpenoid unit. Nat Prod Rep 2010; 27:1630-80. [DOI: 10.1039/c005345g] [Citation(s) in RCA: 210] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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37
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Neier R, Kholod I, Vallat O, Buciumas AM. Synthesis of Rhazinilam: A Comparative Review of Forty Years of Synthetic Endeavors. HETEROCYCLES 2010. [DOI: 10.3987/rev-10-sr(e)2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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38
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Kopsiyunnanines F and isocondylocarpines: new tubotaiwine-type alkaloids from Yunnan Kopsia arborea. J Nat Med 2009; 63:283-9. [DOI: 10.1007/s11418-009-0334-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2009] [Accepted: 03/23/2009] [Indexed: 11/30/2022]
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