1
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Feng J, Shi J, Wei L, Liu M, Li Z, Xiao Y, Zhang J. Palladium/PC-Phos-Catalyzed Asymmetric Heck/Tsuji-Trost Reactions of Amino-Tethered 1,3-Cyclohexadiene with Aryl and Alkenyl Halides. Angew Chem Int Ed Engl 2023; 62:e202215407. [PMID: 36317934 DOI: 10.1002/anie.202215407] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Indexed: 12/04/2022]
Abstract
Chiral perhydroindoles are found in a number of natural products and biologically active compounds. Therefore, the development of new asymmetric methodology for rapid access to this core is of high importance. Herein, we reported a highly regio- and diastereo-selective palladium/PC-Phos-catalyzed asymmetric Heck/Tsuji-Trost reactions of readily available amino tethered 1,3-cyclohexadienes with aryl and alkenyl halides, delivering various functionalized chiral hexahydroindoles in good yields with high enantioselectivity. The application of this reaction to the concise synthesis of (-)-α-Lycorane was demonstrated. DFT computation results indicate that the difference in ΔEdis of two migration insertion transition states determines the enantioselectivity of the reaction.
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Affiliation(s)
- Juan Feng
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Rd, 200241, Shanghai, P. R. China
| | - Jiayi Shi
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Lan Wei
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Rd, 200241, Shanghai, P. R. China
| | - Mingqing Liu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Rd, 200241, Shanghai, P. R. China
| | - Zhiming Li
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Yuanjing Xiao
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Rd, 200241, Shanghai, P. R. China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
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2
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Feng J, Shi J, Wei L, Liu M, Li Z, Xiao Y, Zhang J. Palladium/PC‐Phos‐Catalyzed Asymmetric Heck/Tsuji–Trost Reactions of Amino‐Tethered 1,3‐Cyclohexadiene with Aryl and Alkenyl Halides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202215407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- Juan Feng
- School of Chemistry and Molecular Engineering East China Normal University 500 Dongchuan Rd 200241 Shanghai P. R. China
| | - Jiayi Shi
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Lan Wei
- School of Chemistry and Molecular Engineering East China Normal University 500 Dongchuan Rd 200241 Shanghai P. R. China
| | - Mingqing Liu
- School of Chemistry and Molecular Engineering East China Normal University 500 Dongchuan Rd 200241 Shanghai P. R. China
| | - Zhiming Li
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Yuanjing Xiao
- School of Chemistry and Molecular Engineering East China Normal University 500 Dongchuan Rd 200241 Shanghai P. R. China
| | - Junliang Zhang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
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3
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Shi GR, Ding WQ, Yu SS. Three new erythrina alkaloids from the roots of Erythrina corallodendron. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2022; 24:231-237. [PMID: 34965810 DOI: 10.1080/10286020.2021.2008914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 11/16/2021] [Accepted: 11/16/2021] [Indexed: 06/14/2023]
Abstract
Three new erythrina alkaloids, eryalkals A (1), B (2), and C (3), were isolated from the roots of Erythrina corallodendron L. Their structures, including their absolute configurations, were elucidated based on analyses of HR-ESI-MS, 1D/2D NMR and single-crystal X-ray diffraction techniques. The isolated erythrina alkaloids were screened for the antioxidant and cytotoxic activities. All the compounds showed no antioxidant activity and cytotoxic activities.
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Affiliation(s)
- Guo-Ru Shi
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Wen-Qian Ding
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Shi-Shan Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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4
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Liu D, Shi B, Jiang H, Cheng Y, Xiao WJ, Lu LQ. Synthesis of hydroindoles via desymmetric [3+2] cycloadditions of para-quinamines with photogenerated ketenes. Chem Commun (Camb) 2021; 57:8496-8499. [PMID: 34351325 DOI: 10.1039/d1cc03352b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A DBU-catalyzed desymmetric [3+2] cycloaddition between para-quinamines and photogenerated ketenes was developed for the first time. Under the irradiation of low-energy blue LEDs, a variety of hydroindoles bearing all-carbon quaternary centers were produced with good reaction efficiency and complete diastereoselectivity (34 examples, 45-99% yields and >95 : 5 dr). This protocol represents a new approach to synthetically significant hydroindoles, and features broad substrate scope, high functional group compatibility and mild reaction conditions.
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Affiliation(s)
- Dan Liu
- CCNU-uOttawa Joint Research Centre, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China.
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5
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Clementson S, Matheu SA, Rørsted EM, Pedersen H, Jensen AA, Clausen RP, Vital P, Glibstrup E, Jessing M, Kristensen JL. Erythrina Alkaloid Analogues as nAChR Antagonists-A Flexible Platform for Leads in Drug Discovery. J Org Chem 2021; 86:8248-8262. [PMID: 34061521 DOI: 10.1021/acs.joc.1c00707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Erythrina alkaloids and their central nervous system effects have been studied for over a century, mainly due to their potent antagonistic actions at β2-containing nicotinic acetylcholine receptors (nAChRs). In the present work, we report a synthetic approach giving access to a diverse set of Erythrina natural product analogues and present the enantioselective total synthesis of (+)-Cocculine and (+)-Cocculidine, both found to be potent antagonists of the β2-containing nAChRs.
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Affiliation(s)
- Sebastian Clementson
- Molecular Discovery and Innovation, H. Lundbeck A/S, Ottiliavej 9, Valby 2500, Denmark.,Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Sergio Armentia Matheu
- Molecular Discovery and Innovation, H. Lundbeck A/S, Ottiliavej 9, Valby 2500, Denmark.,Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Emil Märcher Rørsted
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Henrik Pedersen
- Molecular Discovery and Innovation, H. Lundbeck A/S, Ottiliavej 9, Valby 2500, Denmark
| | - Anders A Jensen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Rasmus P Clausen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Paulo Vital
- Molecular Discovery and Innovation, H. Lundbeck A/S, Ottiliavej 9, Valby 2500, Denmark
| | - Emil Glibstrup
- Molecular Discovery and Innovation, H. Lundbeck A/S, Ottiliavej 9, Valby 2500, Denmark
| | - Mikkel Jessing
- Molecular Discovery and Innovation, H. Lundbeck A/S, Ottiliavej 9, Valby 2500, Denmark
| | - Jesper L Kristensen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
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6
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Ho TNT, Abraham N, Lewis RJ. Structure-Function of Neuronal Nicotinic Acetylcholine Receptor Inhibitors Derived From Natural Toxins. Front Neurosci 2020; 14:609005. [PMID: 33324158 PMCID: PMC7723979 DOI: 10.3389/fnins.2020.609005] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 10/30/2020] [Indexed: 12/19/2022] Open
Abstract
Neuronal nicotinic acetylcholine receptors (nAChRs) are prototypical cation-selective, ligand-gated ion channels that mediate fast neurotransmission in the central and peripheral nervous systems. nAChRs are involved in a range of physiological and pathological functions and hence are important therapeutic targets. Their subunit homology and diverse pentameric assembly contribute to their challenging pharmacology and limit their drug development potential. Toxins produced by an extensive range of algae, plants and animals target nAChRs, with many proving pivotal in elucidating receptor pharmacology and biochemistry, as well as providing templates for structure-based drug design. The crystal structures of these toxins with diverse chemical profiles in complex with acetylcholine binding protein (AChBP), a soluble homolog of the extracellular ligand-binding domain of the nAChRs and more recently the extracellular domain of human α9 nAChRs, have been reported. These studies have shed light on the diverse molecular mechanisms of ligand-binding at neuronal nAChR subtypes and uncovered critical insights useful for rational drug design. This review provides a comprehensive overview and perspectives obtained from structure and function studies of diverse plant and animal toxins and their associated inhibitory mechanisms at neuronal nAChRs.
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Affiliation(s)
| | | | - Richard J. Lewis
- Centre for Pain Research, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, Australia
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7
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Al-Tel TH, Srinivasulu V, Ramanathan M, Soares NC, Sebastian A, Bolognesi ML, Abu-Yousef IA, Majdalawieh A. Stereocontrolled transformations of cyclohexadienone derivatives to access stereochemically rich and natural product-inspired architectures. Org Biomol Chem 2020; 18:8526-8571. [PMID: 33043327 DOI: 10.1039/d0ob01550d] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The last two decades or so have witnessed an upsurge in defining the art of designing complex natural products and nature-inspired molecules. Throughout these decades, fundamental insights into stereocontrolled, step-economic and atom-economical synthesis principles were achieved by the numerous synthetic accomplishments particularly in diversity-oriented synthesis (DOS). This has empowered the visualization of the third dimension in synthetic design and thus has resulted in a dramatic increase with today's diversity-oriented synthesis (DOS) at the forefront enabling access to diverse scaffolds with a high degree of stereochemical and skeletal complexity. To this end, a starting material-based approach is one of the powerful tools utilized in DOS that allows rapid access to molecular architectures with a high sp3 content. Skeletal and stereochemical diversity is often paramount for the selective modulation of the biological function of a complementary protein in the biological space. In this context, stereocontrolled transformation of cyclohexadienone scaffolds has positioned itself as a powerful platform for the rapid generation of stereochemically enriched and natural product-inspired compound collections. In this review, we cover multidirectional synthetic strategies that utilized cyclohexadienone derivatives as pluripotent building blocks en route for the construction of novel chemical space.
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Affiliation(s)
- Taleb H Al-Tel
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Vunnam Srinivasulu
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Mani Ramanathan
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Nelson C Soares
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Anusha Sebastian
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Maria L Bolognesi
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum - Università di Bologna, Via Belmeloro, 6, 40126 Bologna, Italy
| | - Imad A Abu-Yousef
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Amin Majdalawieh
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
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8
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Clementson S, Jessing M, Pedersen H, Vital P, Kristensen JL. Enantioselective Total Synthesis of (+)-Dihydro-β-erythroidine. J Am Chem Soc 2019; 141:8783-8786. [PMID: 31122014 DOI: 10.1021/jacs.9b04626] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Erythrina alkaloids represent a rich source of complex polycyclic, bioactive natural products. In addition to their sedative and hypotensive effect, their curare-like activity and structural framework have made them attractive targets for synthetic and medicinal chemists. (+)-Dihydro-β-erythroidine (DHβE), the most potent nicotine acetylcholine receptor antagonist (nAChR) of the Erythrina family, is synthesized for the first time in 13 steps from commercially available material.
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Affiliation(s)
- Sebastian Clementson
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences , University of Copenhagen , Universitetsparken 2 , 2100 Copenhagen , Denmark.,Molecular Discovery and Innovation , H. Lundbeck A/S , Ottiliavej 9 , 2500 Valby , Denmark
| | - Mikkel Jessing
- Molecular Discovery and Innovation , H. Lundbeck A/S , Ottiliavej 9 , 2500 Valby , Denmark
| | - Henrik Pedersen
- Compound Management and Analytical Chemistry , H. Lundbeck A/S , Ottiliavej 9 , 2500 Valby , Denmark
| | - Paulo Vital
- Molecular Discovery and Innovation , H. Lundbeck A/S , Ottiliavej 9 , 2500 Valby , Denmark
| | - Jesper L Kristensen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences , University of Copenhagen , Universitetsparken 2 , 2100 Copenhagen , Denmark
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9
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Rambo DF, Biegelmeyer R, Toson NSB, Dresch RR, Moreno PRH, Henriques AT. The genus Erythrina L.: A review on its alkaloids, preclinical, and clinical studies. Phytother Res 2019; 33:1258-1276. [PMID: 30767297 DOI: 10.1002/ptr.6321] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 01/04/2019] [Accepted: 01/28/2019] [Indexed: 12/13/2022]
Abstract
Erythrina L. genus (Fabaceae) comprises about 115 species, and it has been extensively studied, mainly because of its alkaloids, which have pharmacological properties. References demonstrated that Erythrina spp. have a potential to act in the central nervous system, presenting anxiolytic and anticonvulsant properties already established. Phytochemical investigations confirmed the presence of tetracyclic alkaloids as the major compounds. However, other alkaloid classes have also been reported, including dimeric and trimeric substances, coupled through direct polymerization or two erythrinine units via an acetyl glucose. The present review covers the relevant literature from 1990 until 2017 and outlines the current data on chemical composition and preclinical and clinical studies on Erythrina species. Additionally, the quite striking analogy in the biosynthetic route of erythrin, morphinans, and Amaryllidaceae family alkaloids was also discussed.
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Affiliation(s)
- Douglas F Rambo
- Laboratório de Farmacognosia, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Renata Biegelmeyer
- Departamento do Medicamento, Faculdade de Farmácia, Universidade Federal da Bahia (UFBA), Salvador, BA, Brazil
| | - Natally S B Toson
- Laboratório de Farmacognosia, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Roger R Dresch
- Laboratório de Farmacognosia, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Paulo Roberto H Moreno
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Amélia T Henriques
- Laboratório de Farmacognosia, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
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10
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Crestey F, Jensen AA, Soerensen C, Magnus CB, Andreasen JT, Peters GHJ, Kristensen JL. Dual Nicotinic Acetylcholine Receptor α4β2 Antagonists/α7 Agonists: Synthesis, Docking Studies, and Pharmacological Evaluation of Tetrahydroisoquinolines and Tetrahydroisoquinolinium Salts. J Med Chem 2018; 61:1719-1729. [DOI: 10.1021/acs.jmedchem.7b01895] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- François Crestey
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Anders A. Jensen
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Christian Soerensen
- Department
of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800 Kongens Lyngby, Denmark
| | - Charlotte Busk Magnus
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Department
of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800 Kongens Lyngby, Denmark
| | - Jesper T. Andreasen
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Günther H. J. Peters
- Department
of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800 Kongens Lyngby, Denmark
| | - Jesper L. Kristensen
- Department
of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
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11
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Wang D, Xie N, Yi S, Liu C, Jiang H, Ma Z, Feng J, Yan H, Zhang X. Bioassay-guided isolation of potent aphicidal Erythrina alkaloids against Aphis gossypii from the seed of Erythrina crista-galli L. PEST MANAGEMENT SCIENCE 2018; 74:210-218. [PMID: 28799721 DOI: 10.1002/ps.4698] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 08/03/2017] [Accepted: 08/07/2017] [Indexed: 05/10/2023]
Abstract
BACKGROUND The cotton aphid (Aphis gossypii Glover) is one of the most invasive pests of cotton. Many botanical phytochemicals have a long history as a source of insecticides, and as templates for new insecticides. This study was undertaken to isolate aphicidal compounds from the seeds of Erythrina crista-galli L. using the bioassay-guided isolation method. RESULTS Three novel and 11 known Erythrina alkaloids were isolated. Erysodine (9), erysovine (10), erysotrine (8) and erythraline (11) showed moderate to excellent aphicidal activity with LD50 values of 7.48, 6.68, 5.13 and 4.67 ng aphid-1 , respectively. The Potter spray tower bioassay gave corresponding LC50 values of 186.81, 165.35, 163.74 and 112.78 µg ml-1 . A unique substructure, which presents an sp3 methylene at C-8, a non-oxygenated site at N-9 and a conjugated dienes group (Δ1,2 and Δ6,7 ), plays a crucial role in the aphicidal activity. Application of erythraline (11) led to different increases in the activities of superoxide dismutase, catalase and glutathione S-transferase. CONCLUSION The study demonstrated that the Erythrina alkaloids erysodine (9), erysovine (10), erysotrine (8) and erythraline (11) have potential use as botanical aphicides for commercial application, or as templates for the development of new insecticides. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Delong Wang
- Research & Development Center of Biorational Pesticide, Northwest A&F University, Yangling, Shaanxi, China
| | - Na Xie
- Research & Development Center of Biorational Pesticide, Northwest A&F University, Yangling, Shaanxi, China
| | - Shandong Yi
- Research & Development Center of Biorational Pesticide, Northwest A&F University, Yangling, Shaanxi, China
| | - Chuanyuan Liu
- Research & Development Center of Biorational Pesticide, Northwest A&F University, Yangling, Shaanxi, China
| | - Hui Jiang
- Research & Development Center of Biorational Pesticide, Northwest A&F University, Yangling, Shaanxi, China
| | - Zhiqing Ma
- Research & Development Center of Biorational Pesticide, Northwest A&F University, Yangling, Shaanxi, China
| | - Juntao Feng
- Research & Development Center of Biorational Pesticide, Northwest A&F University, Yangling, Shaanxi, China
| | - He Yan
- Research & Development Center of Biorational Pesticide, Northwest A&F University, Yangling, Shaanxi, China
| | - Xing Zhang
- Research & Development Center of Biorational Pesticide, Northwest A&F University, Yangling, Shaanxi, China
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12
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Shimokawa J. Synthetic Studies on Heteropolycyclic Natural Products: Development of Divergent Strategy. Chem Pharm Bull (Tokyo) 2018; 66:105-115. [DOI: 10.1248/cpb.c17-00819] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jun Shimokawa
- Graduate School of Pharmaceutical Sciences, Nagoya University
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13
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Jepsen TH, Glibstrup E, Crestey F, Jensen AA, Kristensen JL. A strategic approach to [6,6]-bicyclic lactones: application towards the CD fragment of DHβE. Beilstein J Org Chem 2017; 13:988-994. [PMID: 28684978 PMCID: PMC5480346 DOI: 10.3762/bjoc.13.98] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 05/11/2017] [Indexed: 12/19/2022] Open
Abstract
We report an effective synthetic protocol to access [6,6]-bicyclic lactone moieties through a regio- and stereoselective intramolecular Mizoroki–Heck cross-coupling reaction followed by a 6π-electrocyclization. This method enabled the first synthesis of the elusive CD fragment of the Erythrina alkaloid DHβE. Preliminary pharmacological evaluations support the notion that the key pharmacophores of DHβE are located in the A and B rings.
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Affiliation(s)
- Tue Heesgaard Jepsen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Emil Glibstrup
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - François Crestey
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Anders A Jensen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Jesper Langgaard Kristensen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
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14
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Horwitz MA, Massolo E, Johnson JS. Phosphazene-catalyzed desymmetrization of cyclohexadienones by dithiane addition. Beilstein J Org Chem 2017; 13:762-767. [PMID: 28546832 PMCID: PMC5433211 DOI: 10.3762/bjoc.13.75] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 04/04/2017] [Indexed: 12/26/2022] Open
Abstract
We report a desymmetrization of cyclohexadienones by intramolecular conjugate addition of a tethered dithiane nucleophile. Mild reaction conditions allow the formation of diversely functionalized fused bicyclic lactones. The products participate in facially selective additions from the convex surface, leading to allylic alcohol derivatives.
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Affiliation(s)
- Matthew A Horwitz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Elisabetta Massolo
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Jeffrey S Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
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15
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Armstrong LC, Kirsch GE, Fedorov NB, Wu C, Kuryshev YA, Sewell AL, Liu Z, Motter AL, Leggett CS, Orr MS. High-Throughput Patch Clamp Screening in Human α6-Containing Nicotinic Acetylcholine Receptors. SLAS DISCOVERY 2017; 22:686-695. [PMID: 28298165 PMCID: PMC5480602 DOI: 10.1177/2472555217696794] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Nicotine, the addictive component of tobacco products, is an agonist at nicotinic acetylcholine receptors (nAChRs) in the brain. The subtypes of nAChR are defined by their α- and β-subunit composition. The α6β2β3 nAChR subtype is expressed in terminals of dopaminergic neurons that project to the nucleus accumbens and striatum and modulate dopamine release in brain regions involved in nicotine addiction. Although subtype-dependent selectivity of nicotine is well documented, subtype-selective profiles of other tobacco product constituents are largely unknown and could be essential for understanding the addiction-related neurological effects of tobacco products. We describe the development and validation of a recombinant cell line expressing human α6/3β2β3V273S nAChR for screening and profiling assays in an automated patch clamp platform (IonWorks Barracuda). The cell line was pharmacologically characterized by subtype-selective and nonselective reference agonists, pore blockers, and competitive antagonists. Agonist and antagonist effects detected by the automated patch clamp approach were comparable to those obtained by conventional electrophysiological assays. A pilot screen of a library of Food and Drug Administration–approved drugs identified compounds, previously not known to modulate nAChRs, which selectively inhibited the α6/3β2β3V273S subtype. These assays provide new tools for screening and subtype-selective profiling of compounds that act at α6β2β3 nicotinic receptors.
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Affiliation(s)
| | | | | | - Caiyun Wu
- 1 Charles River Discovery, Cleveland, OH, USA
| | | | | | - Zhiqi Liu
- 1 Charles River Discovery, Cleveland, OH, USA
| | - Arianne L Motter
- 2 U.S. Food and Drug Administration/Center for Tobacco Products, Silver Spring, MD, USA
| | - Carmine S Leggett
- 2 U.S. Food and Drug Administration/Center for Tobacco Products, Silver Spring, MD, USA
| | - Michael S Orr
- 2 U.S. Food and Drug Administration/Center for Tobacco Products, Silver Spring, MD, USA.,PAREXEL International, Bethesda, MD, USA
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16
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Thiadiazolodiazepine analogues as a new class of neuromuscular blocking agents: Synthesis, biological evaluation and molecular modeling study. Eur J Med Chem 2017; 126:15-23. [DOI: 10.1016/j.ejmech.2016.09.096] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 09/28/2016] [Accepted: 09/29/2016] [Indexed: 12/17/2022]
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17
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Umihara H, Yoshino T, Shimokawa J, Kitamura M, Fukuyama T. Development of a Divergent Synthetic Route to the Erythrina Alkaloids: Asymmetric Syntheses of 8-Oxo-erythrinine, Crystamidine, 8-Oxo-erythraline, and Erythraline. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602650] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hirotatsu Umihara
- Graduate School of Pharmaceutical Sciences; University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Tomomi Yoshino
- Graduate School of Pharmaceutical Sciences; Nagoya University; Furo-cho, Chikusa Nagoya, Aichi 464-8601 Japan
| | - Jun Shimokawa
- Graduate School of Pharmaceutical Sciences; Nagoya University; Furo-cho, Chikusa Nagoya, Aichi 464-8601 Japan
| | - Masato Kitamura
- Graduate School of Pharmaceutical Sciences; Nagoya University; Furo-cho, Chikusa Nagoya, Aichi 464-8601 Japan
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences; Nagoya University; Furo-cho, Chikusa Nagoya, Aichi 464-8601 Japan
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18
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Umihara H, Yoshino T, Shimokawa J, Kitamura M, Fukuyama T. Development of a Divergent Synthetic Route to the Erythrina Alkaloids: Asymmetric Syntheses of 8-Oxo-erythrinine, Crystamidine, 8-Oxo-erythraline, and Erythraline. Angew Chem Int Ed Engl 2016; 55:6915-8. [DOI: 10.1002/anie.201602650] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Hirotatsu Umihara
- Graduate School of Pharmaceutical Sciences; University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Tomomi Yoshino
- Graduate School of Pharmaceutical Sciences; Nagoya University; Furo-cho, Chikusa Nagoya, Aichi 464-8601 Japan
| | - Jun Shimokawa
- Graduate School of Pharmaceutical Sciences; Nagoya University; Furo-cho, Chikusa Nagoya, Aichi 464-8601 Japan
| | - Masato Kitamura
- Graduate School of Pharmaceutical Sciences; Nagoya University; Furo-cho, Chikusa Nagoya, Aichi 464-8601 Japan
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences; Nagoya University; Furo-cho, Chikusa Nagoya, Aichi 464-8601 Japan
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19
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Pantaine L, Coeffard V, Moreau X, Greck C. Enantioselective Desymmetrization of para-Quinamines through an Aminocatalyzed Aza-Michael/Cyclization Cascade Reaction. Org Lett 2015; 17:3674-7. [DOI: 10.1021/acs.orglett.5b01595] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Loïc Pantaine
- Institut Lavoisier Versailles,
UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Vincent Coeffard
- Institut Lavoisier Versailles,
UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Xavier Moreau
- Institut Lavoisier Versailles,
UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Christine Greck
- Institut Lavoisier Versailles,
UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, 78035 Versailles cedex, France
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20
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Dailler D, Danoun G, Ourri B, Baudoin O. Divergent Synthesis of Aeruginosins Based on a C(sp3)H Activation Strategy. Chemistry 2015; 21:9370-9. [DOI: 10.1002/chem.201501370] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Indexed: 02/03/2023]
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