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Salehi A, Ghanadian M, Zolfaghari B, Jassbi AR, Fattahian M, Reisi P, Csupor D, Khan IA, Ali Z. Neuropharmacological Potential of Diterpenoid Alkaloids. Pharmaceuticals (Basel) 2023; 16:ph16050747. [PMID: 37242531 DOI: 10.3390/ph16050747] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/28/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
This study provides a narrative review of diterpenoid alkaloids (DAs), a family of extremely important natural products found predominantly in some species of Aconitum and Delphinium (Ranunculaceae). DAs have long been a focus of research attention due to their numerous intricate structures and diverse biological activities, especially in the central nervous system (CNS). These alkaloids originate through the amination reaction of tetra or pentacyclic diterpenoids, which are classified into three categories and 46 types based on the number of carbon atoms in the backbone structure and structural differences. The main chemical characteristics of DAs are their heterocyclic systems containing β-aminoethanol, methylamine, or ethylamine functionality. Although the role of tertiary nitrogen in ring A and the polycyclic complex structure are of great importance in drug-receptor affinity, in silico studies have emphasized the role of certain sidechains in C13, C14, and C8. DAs showed antiepileptic effects in preclinical studies mostly through Na+ channels. Aconitine (1) and 3-acetyl aconitine (2) can desensitize Na+ channels after persistent activation. Lappaconitine (3), N-deacetyllapaconitine (4), 6-benzoylheteratisine (5), and 1-benzoylnapelline (6) deactivate these channels. Methyllycaconitine (16), mainly found in Delphinium species, possesses an extreme affinity for the binding sites of α7 nicotinic acetylcholine receptors (nAChR) and contributes to a wide range of neurologic functions and the release of neurotransmitters. Several DAs such as bulleyaconitine A (17), (3), and mesaconitine (8) from Aconitum species have a drastic analgesic effect. Among them, compound 17 has been used in China for decades. Their effect is explained by increasing the release of dynorphin A, activating the inhibitory noradrenergic neurons in the β-adrenergic system, and preventing the transmission of pain messages by inactivating the Na+ channels that have been stressed. Acetylcholinesterase inhibitory, neuroprotective, antidepressant, and anxiolytic activities are other CNS effects that have been investigated for certain DAs. However, despite various CNS effects, recent advances in developing new drugs from DAs were insignificant due to their neurotoxicity.
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Affiliation(s)
- Arash Salehi
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Mustafa Ghanadian
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
- Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Behzad Zolfaghari
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Amir Reza Jassbi
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz 71348-14336, Iran
| | - Maryam Fattahian
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Parham Reisi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan 81745-33871, Iran
| | - Dezső Csupor
- Institute of Clinical Pharmacy, Faculty of Pharmacy, University of Szeged, 6720 Szeged, Hungary
| | - Ikhlas A Khan
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Zulfiqar Ali
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, MS 38677, USA
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Jin S, Zhao X, Ma D. Divergent Total Syntheses of Napelline-Type C20-Diterpenoid Alkaloids: (-)-Napelline, (+)-Dehydronapelline, (-)-Songorine, (-)-Songoramine, (-)-Acoapetaldine D, and (-)-Liangshanone. J Am Chem Soc 2022; 144:15355-15362. [PMID: 35948501 DOI: 10.1021/jacs.2c06738] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The napelline-type alkaloids possess an azabicyclo[3.2.1]octane moiety and an ent-kaurane-type tetracyclic skeleton (6/6/6/5) along with varied oxidation patterns embedded in the compact hexacyclic framework. Herein, we disclose a divergent entry to napelline-type alkaloids that hinges on convergent assembly of the ent-kaurane core using a diastereoselective intermolecular Cu-mediated conjugate addition and subsequent intramolecular Michael addition reaction as well as rapid construction of the azabicyclo[3.2.1]octane motif via an intramolecular Mannich cyclization. The power of this strategy has been demonstrated through efficient asymmetric total syntheses of eight napelline-type alkaloids, including (-)-napelline, (-)-12-epi-napelline, (+)-dehydronapelline, (+)-12-epi-dehydronapelline, (-)-songorine, (-)-songoramine, (-)-acoapetaldine D, and (-)-liangshanone.
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Affiliation(s)
- Shicheng Jin
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Xiangbo Zhao
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Dawei Ma
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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Bitchagno GTM, Schüffler A, Gross J, Krumb M, Tane P, Opatz T. Sesquiterpene Lactones from Vernonia tufnelliae: Structural Characterization and Biological Evaluation. JOURNAL OF NATURAL PRODUCTS 2022; 85:1681-1690. [PMID: 35704432 DOI: 10.1021/acs.jnatprod.2c00055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The genus Vernonia is an extremely rich source of biologically active sesquiterpene lactones. The present report describes the spectroscopic structure elucidation and the cytotoxic and antimicrobial properties of five hitherto unknown germacranolide-like sesquiterpenoids and several known compounds. These new derivatives include a compound (1) with an unprecedented 10/5/5/6 tetracyclic framework featuring a hexahydro-1H,3H,7H-furo[3',4':3,4]furo[3,2-c]pyridin-1-one core resulting from an intramolecular cyclization cascade involving a methacrylate substituent and a low molecular weight amine. Furthermore, an elemane-germacranolide hybrid (2) and three amino acid-derived lactones (3-5) were characterized. A plausible biosynthetic pathway to the key alkaloid is presented, while shielding tensor calculations using DFT in combination with the DP4+ method were applied to elucidate its stereostructure. The newly characterized compounds along with ten known sesquiterpene lactones and phenolic compounds have been isolated from Vernonia tufnelliae, a medicinal plant from the western region of Cameroon. Their structures were consistent with spectroscopic and spectrometric data recorded. The present report is the first investigation of the chemistry and biology of V. tufnelliae.
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Affiliation(s)
- Gabin Thierry M Bitchagno
- Department of Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
- Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Anja Schüffler
- Institut für Biotechnologie und Wirkstoff-Forschung gGmbH (IBWF), Hanns-Dieter-Hüsch-Weg 17, 55128 Mainz, Germany
| | - Jonathan Gross
- Department of Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Matthias Krumb
- Department of Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Pierre Tane
- Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Till Opatz
- Department of Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
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Kumari S, Kumar R, Singh R, Aggarwal G, Agrawal P, Sahal D, Sharma U. Antiplasmodial diterpenoid alkaloid from Aconitum heterophyllum Wall. ex Royle: Isolation, characterization, and UHPLC-DAD based quantification. JOURNAL OF ETHNOPHARMACOLOGY 2022; 287:114931. [PMID: 34942322 DOI: 10.1016/j.jep.2021.114931] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/10/2021] [Accepted: 12/18/2021] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Aconitum heterophyllum Wall. ex Royle is a traditionally important medicinal plant having numerous therapeutic actions as documented in Ayurveda. This plant is traditionally known for combating worm infestation, fever, respiratory tract disease, vomiting, diarrhoea, diabetes, skin disorders, anaemia, and joint disorders. Further, it has been used alone and in combination with other plants to prepare various anti-malarial formulations. However, there is no report on the assessment of its anti-plasmodial activity, and the metabolite(s) responsible for this activity. AIM OF THE STUDY The main aim of this study was to conduct phytochemical investigation of A. heterophyllum roots for the preparation of extract, fractions, and isolation of pure molecules to identify active fractions/molecules responsible for the anti-plasmodial activity, and development of UHPLC-DAD based analytical method which can be used for the quantification of marker compounds in the extracts and fractions. MATERIALS AND METHODS Hydroalcoholic extract (1:1 v/v) and fractions (n-hexane, chloroform, ethyl acetate, n-butanol, and water) were prepared from the dried powdered roots of A. heterophyllum. Fractions were further subjected to silica gel column chromatography to isolate pure specialized secondary metabolites from this plant. All extracts, fractions, and pure molecules were evaluated against the chloroquine resistant Pf INDO and chloroquine sensitive Pf3D7 strains in culture for calculating their IC50 values. UHPLC-DAD based analytical method was also developed for the first time for the quantification of marker compounds and quality assessment of this commercially important Himalayan medicinal plant. RESULTS Phytochemical investigation of A. heterophyllum root led to the isolation of six specialized metabolites viz. 2-O-cinnamoyl hetisine (1), atisinium (2), 4-oxabicyclo [3.2.2] nona-1(7),5,8-triene (3), atisinium cinnamate (4), aconitic acid (5), and atisinium formate (6). Compound 1 is a new hetisine type diterpenoid alkaloid, compounds 4 and 6 are new counter ionic forms observed with atisinium ion, and compound 3 is being reported for the first time from this genus. Chloroform fraction was found to be the most active with IC50 (μg/mL) 1.01 (Pf INDO) and 1.32 (Pf3D7). The molecule 2-O-cinnamoyl hetisine (1), a new diterpenoid alkaloid isolated from chloroform fraction, showed promising antiplasmodial activities with IC50 (μM) 1.92 (Pf INDO) and 10.8 (Pf 3D7). The activity of chloroform fraction was further validated by the developed UHPLC-DAD based method as the quantity of 2-O-cinnamoyl hetisine (1) was higher in the chloroform fraction (≅200 mg/g) than in all other fractions (<7 mg/g). Atisinium (2) and 2-O-cinnamoyl hetisine (1) were found to be the main marker compounds of this plant based on quantity and antiplasmodial activity, respectively. CONCLUSION This study provides the scientific rationale for the traditional use of this plant in treating malaria. Further, this study revealed that the anti-malarial potential of this plant might be due to the presence of diterpenoid alkaloids.
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Affiliation(s)
- Surekha Kumari
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, 176061, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Rakesh Kumar
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, 176061, India; Wydział Chemii, Uniwersytet Wrocławski, 50-383, Wrocław, Poland
| | - Raman Singh
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, 176061, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Gaurav Aggarwal
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, 176061, India
| | - Prakhar Agrawal
- Malaria Drug Discovery Laboratory, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Dinkar Sahal
- Malaria Drug Discovery Laboratory, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi, 110067, India.
| | - Upendra Sharma
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, 176061, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Yin T, Zhang H, Zhang W, Jiang Z. Chemistry and biological activities of hetisine-type diterpenoid alkaloids. RSC Adv 2021; 11:36023-36033. [PMID: 35492752 PMCID: PMC9043348 DOI: 10.1039/d1ra07173d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 10/17/2021] [Indexed: 12/12/2022] Open
Abstract
Hetisine-type C20-diterpenoid alkaloids (DAs) are one of the most important DA subtypes. During the past decades, a total of 157 hetisine-type DAs were obtained from plants from seven genera in three families, most of which were isolated from the genera Aconitum and Delphinium in the Ranunculaceae family. Structurally, hetisine-type DAs are characterized by a heptacyclic hetisane skeleton formed by the linkage of C(14)–C(20) and N–C(6) bonds in an atisine-type DA, and their structural diversity is created by the states of the N atom and various substituents. Pharmacological studies have revealed a wide range of pharmacological actions for hetisine-type DAs, including antiarrhythmic, antitumor, antimicrobial and insecticidal activities, as well as effects on peripheral vasculature, which are closely related to their chemical structures. In particular, the prominent antiarrhythmic effects and low toxicity of hetisine-type DAs highlight their potential in antiarrhythmic drug discovery. Hetisine-type DAs with diverse bioactivities are promising lead structures for further development as commercial agents in medicine. Natural hetisine-type C20-diterpenoid alkaloids with diverse structures showed multiple pharmacological activities, indicating great potential in drug discovery.![]()
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Affiliation(s)
- Tianpeng Yin
- State Key Laboratory of Quality Research in Chinese Medicines, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology Taipa Macau 999078 China .,Department of Bioengineering, Zunyi Medical University Zhuhai Campus Zhuhai 519041 China
| | - Huixia Zhang
- State Key Laboratory of Quality Research in Chinese Medicines, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology Taipa Macau 999078 China
| | - Wei Zhang
- State Key Laboratory of Quality Research in Chinese Medicines, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology Taipa Macau 999078 China
| | - Zhihong Jiang
- State Key Laboratory of Quality Research in Chinese Medicines, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology Taipa Macau 999078 China
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Yu K, Yao F, Zeng Q, Xie H, Ding H. Asymmetric Total Syntheses of (+)-Davisinol and (+)-18-Benzoyldavisinol: A HAT-Initiated Transannular Redox Radical Approach. J Am Chem Soc 2021; 143:10576-10581. [PMID: 34240855 DOI: 10.1021/jacs.1c05703] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The first and asymmetric total syntheses of two C11-oxygenated hetisine-type diterpenoid alkaloids, namely, (+)-davisinol and (+)-18-benzoyldavisinol, is described. The concise synthetic approach features a HAT-initiated transannular redox radical cyclization, an ODI-Diels-Alder cycloaddition, and an acylative kinetic resolution. By incorporating an efficient late-stage assembly of the azabicycle, our strategy would streamline the synthetic design of C20-diterpenoid alkaloids and pave the way for their modular syntheses.
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Affiliation(s)
- Kuan Yu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Fengjie Yao
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Qingrui Zeng
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Hujun Xie
- Department of Applied Chemistry, Zhejiang Gongshang University, Hangzhou 310018, 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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Thawabteh AM, Thawabteh A, Lelario F, Bufo SA, Scrano L. Classification, Toxicity and Bioactivity of Natural Diterpenoid Alkaloids. Molecules 2021; 26:4103. [PMID: 34279443 PMCID: PMC8271992 DOI: 10.3390/molecules26134103] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 06/29/2021] [Accepted: 07/02/2021] [Indexed: 11/16/2022] Open
Abstract
Diterpenoid alkaloids are natural compounds having complex structural features with many stereo-centres originating from the amination of natural tetracyclic diterpenes and produced primarily from plants in the Aconitum, Delphinium, Consolida genera. Corals, Xenia, Okinawan/Clavularia, Alcyonacea (soft corals) and marine sponges are rich sources of diterpenoids, despite the difficulty to access them and the lack of availability. Researchers have long been concerned with the potential beneficial or harmful effects of diterpenoid alkaloids due to their structural complexity, which accounts for their use as pharmaceuticals as well as their lousy reputation as toxic substances. Compounds belonging to this unique and fascinating family of natural products exhibit a broad spectrum of biological activities. Some of these compounds are on the list of clinical drugs, while others act as incredibly potent neurotoxins. Despite numerous attempts to prepare synthetic products, this review only introduces the natural diterpenoid alkaloids, describing 'compounds' structures and classifications and their toxicity and bioactivity. The purpose of the review is to highlight some existing relationships between the presence of substituents in the structure of such molecules and their recognised bioactivity.
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Affiliation(s)
- Amin Mahmood Thawabteh
- Samih Darwazah Institute for Pharmaceutical Industries, Faculty of Pharmacy Nursing and Health Professions, Birzeit University, Bir Zeit 71939, Palestine
| | - Alà Thawabteh
- Medical Imaging Department, Faculty of Health Profession, Al-Quds University, Jerusalem 20002, Palestine
| | - Filomena Lelario
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy
| | - Sabino Aurelio Bufo
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy
- Department of Geography, Environmental Management & Energy Studies, University of Johannesburg, Johannesburg 2092, South Africa
| | - Laura Scrano
- Department of European Cultures (DICEM), University of Basilicata, 75100 Matera, Italy
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LI QY, WU B, GONG X, WANG WS, ZHU JX, ZHANG CH, ZHANG N. Qualitative and quantitative analyses of aconite alkaloids in Aconiti kusnezoffii Radix, and NO inhibitory activity evaluation of the alkaloid extracts. FOOD SCIENCE AND TECHNOLOGY 2021. [DOI: 10.1590/fst.28521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
| | | | | | | | | | - Chun-Hong ZHANG
- Donghe District, China; Planting and Development of Astragalus Membranaceus of the Geoherbs, China; Inner Mongolia Key Laboratory of Characteristic Geoherbs Resources and Utilization, China
| | - Na ZHANG
- Donghe District, China; Planting and Development of Astragalus Membranaceus of the Geoherbs, China; Inner Mongolia Key Laboratory of Characteristic Geoherbs Resources and Utilization, China
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Zhang Q, Yang Z, Wang Q, Liu S, Zhou T, Zhao Y, Zhang M. Asymmetric Total Synthesis of Hetidine-Type C 20-Diterpenoid Alkaloids: (+)-Talassimidine and (+)-Talassamine. J Am Chem Soc 2021; 143:7088-7095. [PMID: 33938219 DOI: 10.1021/jacs.1c01865] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Here, we report the first asymmetric total synthesis of (+)-talassimidine and (+)-talassamine, two hetidine-type C20-diterpenoid alkaloids. A highly regio- and diastereoselective 1,3-dipolar cycloaddition of an azomethine ylide yielded a chiral tetracyclic intermediate in high enantiopurity, thus providing the structural basis for asymmetric assembly of the hexacyclic hetidine skeleton. In this key step, the introduction of a single chiral center induces four new continuous chiral centers. Another key transformation is the dearomative cyclopropanation of the benzene ring and subsequent SN2-like ring opening of the resultant cyclopropane ring with water as a nucleophile, which not only establishes the B ring but also precisely installs the difficult-to-achieve equatorial C7-OH group.
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Affiliation(s)
- Quanzheng Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Zhao Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Qi Wang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Shuangwei Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Tao Zhou
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Yankun Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Min Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
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Alhilal M, Sulaiman YAM, Alhilal S, Gomha SM, Ouf SA. Antifungal Activity of New Diterpenoid Alkaloids Isolated by Different Chromatographic Methods from Delphinium peregrinum L. var. eriocarpum Boiss. Molecules 2021; 26:1375. [PMID: 33806579 PMCID: PMC7961722 DOI: 10.3390/molecules26051375] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 12/02/2022] Open
Abstract
This paper aimed to investigate the potential antifungal influences of new alkaloids from Delphinium peregrinum L. var. eriocarpum Boiss. New Diterpenoid alkaloids Delcarpum (1), Hydrodavisine (4) and known alkaloids Peregrine (2), Delphitisine (3) were isolated by different chromatographic methods from the aerial parts of D. Peregrinum eriocarpum Boiss, which grows in Syria. The structures of alkaloids were proposed based on 1D NMR spectroscopy 1H-NMR, 13C-NMR, DEPT-135, DEPT-90, 2D NMR spectroscopy DQF-COSY, HMQC, EI-Ms mass spectrum, and IR spectroscopic measurements. The antifungal activity of the isolated alkaloids was evaluated against different dermatophyte fungal isolates compared with fluconazole. In the case of Peregrine (2) the minimum inhibitory concentrations(MICs) recorded 128-256, 32-64, and 32 for Epidermophyton floccosum, Microsporum canis, and Trichophyton rubrum, respectively, compared to 32-64, 16, and 32 μg/mL in the case of fluconazole, respectively. The MICs recorded on application of the four alkaloids mixture were 64, 32, and 16 in the case of E. floccosum, M. canis, and T. rubrum, respectively, which were significantly lower than that measured for each of the individual alkaloid and were compatible for fluconazole. In conclusion, MICs of the tested alkaloids showed a variable potential effect on the investigated fungal isolates. Peregrine (2) was the most effective alkaloid, however, the application of the mixture of alkaloids induced significant synergistic activity that was more pronounced than the application of individual ones.
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Affiliation(s)
- Mohammad Alhilal
- Department of Biochemistry, Faculty of Veterinary Medicine, Ataturk University, 25240 Erzurum, Turkey
| | - Yaser A. M. Sulaiman
- Department of Clinical Laboratory Science, College of Pharmacy, Tikrit University, Tikrit 34001, Iraq;
| | - Suzan Alhilal
- Department of Chemistry, Faculty of Science, University of Albaath, Homs, Syria, 25070 Erzurum, Turkey;
| | - Sobhi M. Gomha
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
- Department of Chemistry, Faculty of Science, Islamic University in Almadinah Almonawara, Almadinah Almonawara 42351, Saudi Arabia
| | - Salama A. Ouf
- Botany & Microbiology Department, Faculty of Science, Cairo University, Giza 12613, Egypt;
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Huang H, Mi F, Li C, He H, Wang F, Liu X, Qin Y. Total Synthesis of Liangshanone. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hong‐Xiu Huang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Fen Mi
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Chunxin Li
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Huan He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Feng‐Peng Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs 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 Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs 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 Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
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12
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Huang H, Mi F, Li C, He H, Wang F, Liu X, Qin Y. Total Synthesis of Liangshanone. Angew Chem Int Ed Engl 2020; 59:23609-23614. [PMID: 32902096 DOI: 10.1002/anie.202011923] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Hong‐Xiu Huang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Fen Mi
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Chunxin Li
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Huan He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Feng‐Peng Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs 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 Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs 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 Systems of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
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13
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Abstract
Plants of Delphinium are herbal medicine used in the Tibet region with whole grass as a drug, which have the effects of analgesic, antibacterial, antipyretic, and anticancer. The main bioactive compounds are alkaloids, flavonoids, and sterols. This review summarized the compounds and pharmacological effects of Delphinium and provides a reference for further research on Delphinium.
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14
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Yin T, Cai L, Ding Z. A systematic review on the chemical constituents of the genus Consolida (Ranunculaceae) and their biological activities. RSC Adv 2020; 10:35072-35089. [PMID: 35515663 PMCID: PMC9056944 DOI: 10.1039/d0ra06811j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 08/31/2020] [Indexed: 12/13/2022] Open
Abstract
For centuries, species of the genus Consolida (Ranunculaceae) have been extensively utilized for their extremely high ornamental and medicinal values. Phytochemical investigations of Consolida species have revealed the presence of multiple active ingredients, including diterpenoid alkaloids, flavonoids, phenolic acids, phytosterols, fatty acids, and volatile constituents. These chemical constituents are of great research significance due to their novel structures and broad biological activities. This review addresses, for the first time, the chemical constituents of Consolida plants and the biological activities of these compounds to facilitate future research.
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Affiliation(s)
- Tianpeng Yin
- Zhuhai Key Laboratory of Fundamental and Applied Research in Traditional Chinese Medicine, Department of Bioengineering, Zhuhai Campus of Zunyi Medical University Zhuhai 519041 China.,Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University Kunming 650091 China
| | - Le Cai
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University Kunming 650091 China
| | - Zhongtao Ding
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University Kunming 650091 China
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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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Yang Y, Hu P, Zhou X, Wu P, Si X, Lu B, Zhu Y, Xia Y. Transcriptome analysis of Aconitum carmichaelii and exploration of the salsolinol biosynthetic pathway. Fitoterapia 2020; 140:104412. [DOI: 10.1016/j.fitote.2019.104412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 10/28/2019] [Accepted: 11/04/2019] [Indexed: 02/06/2023]
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17
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Wu Y, Shao S, Guo Q, Xu C, Xia H, Zhang T, Shi J. Aconicatisulfonines A and B, Analgesic Zwitterionic C20-Diterpenoid Alkaloids with a Rearranged Atisane Skeleton from Aconitum carmichaelii. Org Lett 2019; 21:6850-6854. [DOI: 10.1021/acs.orglett.9b02479] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yuzhuo Wu
- 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, People’s Republic of China
| | - Shuai Shao
- 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, People’s Republic of China
| | - Qinglan Guo
- 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, People’s Republic of China
| | - Chengbo Xu
- 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, People’s Republic of China
| | - Huan Xia
- 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, People’s Republic of China
| | - Tiantai Zhang
- 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, People’s Republic of China
| | - Jiangong 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, People’s Republic of China
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18
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Owens KR, McCowen SV, Blackford KA, Ueno S, Hirooka Y, Weber M, Sarpong R. Total Synthesis of the Diterpenoid Alkaloid Arcutinidine Using a Strategy Inspired by Chemical Network Analysis. J Am Chem Soc 2019; 141:13713-13717. [PMID: 31276621 DOI: 10.1021/jacs.9b05815] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Arcutinidine and other arcutinidine-type diterpenoid alkaloids feature an intricate polycyclic, bridged framework with unusual connectivity. A chemical network analysis approach to the arcutane skeleton enabled the identification of highly simplifying retrosynthetic disconnections, which indicated that the caged structure could arise from a simpler fused ring system. On this basis, a total synthesis of arcutinidine is reported herein, featuring an unprecedented oxopyrrolium Diels-Alder cycloaddition which furnishes a key tetracyclic intermediate. In addition, the synthesis utilizes a diastereoselective oxidative dearomatization/cycloaddition sequence and a SmI2-mediated C-C coupling to forge the bridged framework of the natural products. This synthetic plan may also enable future investigations into the biosynthetic relationships between the arcutanes, the related diterpenoid atropurpuran, and other diterpenoid alkaloids.
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Affiliation(s)
- Kyle R Owens
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Shelby V McCowen
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Katherine A Blackford
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Sohei Ueno
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Yasuo Hirooka
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Manuel Weber
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Richmond Sarpong
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
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19
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Wada K, Yamashita H. Cytotoxic Effects of Diterpenoid Alkaloids Against Human Cancer Cells. Molecules 2019; 24:E2317. [PMID: 31234546 PMCID: PMC6630653 DOI: 10.3390/molecules24122317] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/17/2019] [Accepted: 06/21/2019] [Indexed: 11/30/2022] Open
Abstract
Diterpenoid alkaloids are isolated from plants of the genera Aconitum, Delphinium, and Garrya (Ranunculaceae) and classified according to their chemical structures as C18-, C19- or C20-diterpenoid alkaloids. The extreme toxicity of certain compounds, e.g., aconitine, has prompted a thorough investigation of how structural features affect their bioactivities. Therefore, natural diterpenoid alkaloids and semi-synthetic alkaloid derivatives were evaluated for cytotoxic effects against human tumor cells [A549 (lung carcinoma), DU145 (prostate carcinoma), MDA-MB-231 (triple-negative breast cancer), MCF-7 (estrogen receptor-positive, HER2-negative breast cancer), KB (identical to cervical carcinoma HeLa derived AV-3 cell line), and multidrug-resistant (MDR) subline KB-VIN]. Among the tested alkaloids, C19-diterpenoid (e.g., lipojesaconitine, delcosine and delpheline derivatives) and C20-diterpenoid (e.g., kobusine and pseudokobusine derivatives) alkaloids exhibited significant cytotoxic activity and, thus, provide promising new leads for further development as antitumor agents. Notably, several diterpenoid alkaloids were more potent against MDR subline KB-VIN cells than the parental drug-sensitive KB cells.
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Affiliation(s)
- Koji Wada
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, 4-1, Maeda 7-jo 15-choume, Teine-ku, Sapporo 006-8590, Japan.
| | - Hiroshi Yamashita
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, 4-1, Maeda 7-jo 15-choume, Teine-ku, Sapporo 006-8590, Japan.
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20
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Doering NA, Kou KGM, Norseeda K, Lee JC, Marth CJ, Gallego GM, Sarpong R. A Copper-Mediated Conjugate Addition Approach to Analogues of Aconitine-Type Diterpenoid Alkaloids. J Org Chem 2018; 83:12911-12920. [PMID: 30216070 PMCID: PMC6214151 DOI: 10.1021/acs.joc.8b01967] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A copper-mediated conjugate addition of electron-rich aryl groups into a complex vinyl nitrile using arylmagnesium bromides is reported. The conjugate addition adducts were advanced toward the synthesis of designed aconitine-type analogues. The variation in oxygenation patterns on the arene coupling partner, introduced through the current conjugate addition approach, may ultimately provide insight into structure-activity relationships of the diterpenoid alkaloids.
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Affiliation(s)
- Nicolle A. Doering
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | | | - Krissada Norseeda
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | | | | | | | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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21
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Zhao D, Shen Y, Shi Y, Shi X, Qiao Q, Zi S, Zhao E, Yu D, Kennelly EJ. Probing the transcriptome of Aconitum carmichaelii reveals the candidate genes associated with the biosynthesis of the toxic aconitine-type C 19-diterpenoid alkaloids. PHYTOCHEMISTRY 2018; 152:113-124. [PMID: 29758520 DOI: 10.1016/j.phytochem.2018.04.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 04/25/2018] [Accepted: 04/29/2018] [Indexed: 06/08/2023]
Abstract
Aconitum carmichaelii has long been used as a traditional Chinese medicine, and its processed lateral roots are known commonly as fuzi. Aconitine-type C19-diterpenoid alkaloids accumulating in the lateral roots are some of the main toxicants of this species, yet their biosynthesis remains largely unresolved. As a first step towards understanding the biosynthesis of aconitine-type C19-diterpenoid alkaloids, we performed de novo transcriptome assembly and analysis of rootstocks and leaf tissues of Aconitum carmichaelii by next-generation sequencing. A total of 525 unigene candidates were identified as involved in the formation of C19-diterpenoid alkaloids, including those encoding enzymes in the early steps of diterpenoid alkaloids scaffold biosynthetic pathway, such as ent-copalyl diphosphate synthases, ent-kaurene synthases, kaurene oxidases, cyclases, and key aminotransferases. Furthermore, candidates responsible for decorating of diterpenoid alkaloid skeletons were discovered from transcriptome sequencing of fuzi, such as monooxygenases, methyltransferase, and BAHD acyltransferases. In addition, 645 differentially expressed genes encoding transcription factors potentially related to diterpenoid alkaloids accumulation underground were documented. Subsequent modular domain structure phylogenetics and differential expression analysis led to the identification of BAHD acyltransferases possibly involved in the formation of acetyl and benzoyl esters of diterpenoid alkaloids, associated with the acute toxicity of fuzi. The transcriptome data provide the foundation for future research into the molecular basis for aconitine-type C19-diterpenoid alkaloids biosynthesis in A. carmichaelii.
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Affiliation(s)
- Dake Zhao
- Laboratory of Ecology and Evolutionary Biology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan University, Kunming, China; Yunnan Institute of Materia Medica, Yunnan Baiyao Group Company Limited, Kunming, China; Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, China
| | - Yong Shen
- College of Agriculture and Biotechnology, Yunnan Agricultural University, Kunming, China
| | - Yana Shi
- Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Xingqiao Shi
- School of Agriculture, Yunnan University, Kunming, China
| | - Qin Qiao
- School of Agriculture, Yunnan University, Kunming, China
| | - Shuhui Zi
- School of Agriculture, Yunnan University, Kunming, China
| | - Erqiang Zhao
- School of Agriculture, Yunnan University, Kunming, China
| | - Diqiu Yu
- Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, China.
| | - Edward J Kennelly
- Department of Biological Sciences, Lehman College, City University of New York, United States; Ph.D. Programs in Biochemistry, Biology, and Chemistry, The Graduate Center, City University of New York, United States.
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22
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Kou KGM, Pflueger JJ, Kiho T, Morrill LC, Fisher EL, Clagg K, Lebold TP, Kisunzu JK, Sarpong R. A Benzyne Insertion Approach to Hetisine-Type Diterpenoid Alkaloids: Synthesis of Cossonidine (Davisine). J Am Chem Soc 2018; 140:8105-8109. [PMID: 29889509 PMCID: PMC6342194 DOI: 10.1021/jacs.8b05043] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The hetisine-type natural products exhibit one of the most complex carbon skeletons within the diterpenoid alkaloid family. The use of network analysis has enabled a synthesis strategy to access alkaloids in this class with hydroxylation on the A-ring. Key transformations include a benzyne acyl-alkylation to construct a key fused 6-7-6 tricycle, a chemoselective nitrile reduction, and sequential C-N bond formations using a reductive cyclization and a photochemical hydroamination to construct an embedded azabicycle. Our strategy should enable access to myriad natural and unnatural products within the hetisine-type.
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Affiliation(s)
- Kevin G. M. Kou
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Jason J. Pflueger
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Toshihiro Kiho
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Louis C. Morrill
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Ethan L. Fisher
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Kyle Clagg
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Terry P. Lebold
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Jessica K. Kisunzu
- Department of Chemistry & Biochemistry, Colorado College, Colorado Springs, Colorado 80903, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
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23
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Nishiyama Y, Yokoshima S, Fukuyama T. Synthesis of Cardiopetaline via a Wagner-Meerwein Rearrangement without Preactivation of the Pivotal Hydroxy Group. Org Lett 2018; 19:5833-5835. [PMID: 29039205 DOI: 10.1021/acs.orglett.7b02812] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A synthesis of cardiopetaline has been accomplished via a Wagner-Meerwein rearrangement of a diol having the denudatine skeleton. The Wagner-Meerwein rearrangement could be facilitated simply by heating the diol with p-toluenesulfonic acid in pivalic acid, without preactivating the pivotal hydroxy group. This strategy does not require differentiation of several hydroxy groups in the substrate for the Wagner-Meerwein rearrangement and could be applied to the synthesis of more highly oxygenated aconitine-type diterpenoid alkaloids.
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Affiliation(s)
- Yoshitake Nishiyama
- Graduate School of Pharmaceutical Sciences, Nagoya University , Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan.,Graduate School of Pharmaceutical Sciences, University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Satoshi Yokoshima
- Graduate School of Pharmaceutical Sciences, Nagoya University , Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences, Nagoya University , Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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24
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Guo Q, Xia H, Shi G, Zhang T, Shi J. Aconicarmisulfonine A, a Sulfonated C20-Diterpenoid Alkaloid from the Lateral Roots of Aconitum carmichaelii. Org Lett 2018; 20:816-819. [DOI: 10.1021/acs.orglett.7b03956] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Qinglan Guo
- 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, People’s Republic of China
| | - Huan Xia
- 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, People’s Republic of China
| | - Gaona 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, People’s Republic of China
| | - Tiantai Zhang
- 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, People’s Republic of China
| | - Jiangong 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, People’s Republic of China
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25
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Kiss T, Cank KB, Orbán-Gyapai O, Liktor-Busa E, Zomborszki ZP, Rutkovska S, Pučka I, Németh A, Csupor D. Phytochemical and pharmacological investigation of Spiraea chamaedryfolia: a contribution to the chemotaxonomy of Spiraea genus. BMC Res Notes 2017; 10:762. [PMID: 29268773 PMCID: PMC5740960 DOI: 10.1186/s13104-017-3013-y] [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: 07/18/2017] [Accepted: 11/28/2017] [Indexed: 11/23/2022] Open
Abstract
Objective Diterpene alkaloids are secondary plant metabolites and chemotaxonomical markers with a strong biological activity. These compounds are characteristic for the Ranunculaceae family, while their occurrence in other taxa is rare. Several species of the Spiraea genus (Rosaceae) are examples of this rarity. Screening Spiraea species for alkaloid content is a chemotaxonomical approach to clarify the classification and phylogeny of the genus. Novel pharmacological findings make further investigations of Spiraea diterpene alkaloids promising. Results Seven Spiraea species were screened for diterpene alkaloids. Phytochemical and pharmacological investigations were performed on Spiraea chamaedryfolia, the species found to contain diterpene alkaloids. Its alkaloid-rich fractions were found to exert a remarkable xanthine-oxidase inhibitory activity and a moderate antibacterial activity. The alkaloid distribution within the root was clarified by microscopic techniques. Electronic supplementary material The online version of this article (10.1186/s13104-017-3013-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Tivadar Kiss
- Department of Pharmacognosy, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary.,Interdisciplinary Centre for Natural Products, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary
| | - Kristóf Bence Cank
- Department of Pharmacognosy, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary
| | - Orsolya Orbán-Gyapai
- Department of Pharmacognosy, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary
| | - Erika Liktor-Busa
- Department of Pharmacognosy, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary
| | - Zoltán Péter Zomborszki
- Department of Pharmacognosy, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary.,Interdisciplinary Centre for Natural Products, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary
| | - Santa Rutkovska
- Department of Chemistry and Geography, Daugavpils University, Parādes st. 1, Daugavpils, 5401, Latvia
| | - Irēna Pučka
- Department of Chemistry and Geography, Daugavpils University, Parādes st. 1, Daugavpils, 5401, Latvia
| | - Anikó Németh
- Botanical Garden, University of Szeged, Lövölde u. 42, Szeged, 6726, Hungary
| | - Dezső Csupor
- Department of Pharmacognosy, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary. .,Interdisciplinary Centre for Natural Products, University of Szeged, Eötvös u. 6, Szeged, 6720, Hungary.
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26
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Kou KGM, Kulyk S, Marth CJ, Lee JC, Doering NA, Li BX, Gallego GM, Lebold TP, Sarpong R. A Unifying Synthesis Approach to the C 18-, C 19-, and C 20-Diterpenoid Alkaloids. J Am Chem Soc 2017; 139:13882-13896. [PMID: 28858498 PMCID: PMC6372304 DOI: 10.1021/jacs.7b07706] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The secondary metabolites that comprise the diterpenoid alkaloids are categorized into C18, C19, and C20 families depending on the number of contiguous carbon atoms that constitute their central framework. Herein, we detail our efforts to prepare these molecules by chemical synthesis, including a photochemical approach, and ultimately a bioinspired strategy that has resulted in the development of a unifying synthesis of one C18 (weisaconitine D), one C19 (liljestrandinine), and three C20 (cochlearenine, paniculamine, and N-ethyl-1α-hydroxy-17-veratroyldictyzine) natural products from a common intermediate.
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Affiliation(s)
- Kevin G. M. Kou
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | | | | | | | - Nicolle A. Doering
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Beryl X. Li
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | | | | | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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27
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Pflueger JJ, Morrill LC, deGruyter JN, Perea MA, Sarpong R. Magnesiate Addition/Ring-Expansion Strategy To Access the 6-7-6 Tricyclic Core of Hetisine-Type C 20-Diterpenoid Alkaloids. Org Lett 2017; 19:4632-4635. [PMID: 28820600 PMCID: PMC6287954 DOI: 10.1021/acs.orglett.7b02260] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A synthetic strategy to access the fused 6-7-6 tricyclic core of hetisine-type C20-diterpenoid alkaloids is reported. This strategy employs a Diels-Alder cycloaddition to assemble a fused bicyclic anhydride intermediate, which is elaborated to a vinyl lactone-acetal bearing an aromatic ring in five steps. Aromatic iodination is followed by magnesium-halogen exchange with a trialkyl magnesiate species, which undergoes intramolecular cyclization. Subsequent oxidation provides the desired 6-7-6 tricyclic diketoaldehyde, with carbonyl groups at all three positions for eventual C-N bond formation and subsequent elaboration.
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Affiliation(s)
- Jason J Pflueger
- Department of Chemistry, University of California , Berkeley, California 94720, United States
| | - Louis C Morrill
- Department of Chemistry, University of California , Berkeley, California 94720, United States
| | - Justine N deGruyter
- Department of Chemistry, University of California , Berkeley, California 94720, United States
| | - Melecio A Perea
- Department of Chemistry, University of California , Berkeley, California 94720, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California , Berkeley, California 94720, United States
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28
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Anticancer Activities of C 18-, C 19-, C 20-, and Bis-Diterpenoid Alkaloids Derived from Genus Aconitum. Molecules 2017; 22:molecules22020267. [PMID: 28208826 PMCID: PMC6155828 DOI: 10.3390/molecules22020267] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 02/05/2017] [Accepted: 02/06/2017] [Indexed: 12/17/2022] Open
Abstract
Cancer is one of the most common lethal diseases, and natural products have been extensively studied as anticancer agents considering their availability, low toxicity, and economic affordability. Plants belonging to the genus Aconitum have been widely used medically in many Asian countries since ancient times. These plants have been proven effective for treating several types of cancer, such as lung, stomach, and liver cancers. The main effective components of Aconitum plants are diterpenoid alkaloids—which are divided into C18-, C19-, C20-, and bis-diterpenoid alkaloids—are reportedly some of the most promising, naturally abundant compounds for treating cancer. This review focuses on the progress of diterpenoid alkaloids with different structures derived from Aconitum plants and some of their derivatives with potential anticancer activities. We hope that this work can serve as a reference for further developing Aconitum diterpenoid alkaloids as anticancer agents.
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29
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Li XH, Zhu M, Wang ZX, Liu XY, Song H, Zhang D, Wang FP, Qin Y. Synthesis of Atisine, Ajaconine, Denudatine, and Hetidine Diterpenoid Alkaloids by a Bioinspired Approach. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609882] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Xiao-Huan Li
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Min Zhu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Zhi-Xiu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Dan Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Feng-Peng Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
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30
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Li XH, Zhu M, Wang ZX, Liu XY, Song H, Zhang D, Wang FP, Qin Y. Synthesis of Atisine, Ajaconine, Denudatine, and Hetidine Diterpenoid Alkaloids by a Bioinspired Approach. Angew Chem Int Ed Engl 2016; 55:15667-15671. [PMID: 27860043 DOI: 10.1002/anie.201609882] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Indexed: 02/02/2023]
Affiliation(s)
- Xiao-Huan Li
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Min Zhu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Zhi-Xiu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Dan Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Feng-Peng Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P.R. China
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31
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Kou KGM, Li BX, Lee JC, Gallego GM, Lebold TP, DiPasquale AG, Sarpong R. Syntheses of Denudatine Diterpenoid Alkaloids: Cochlearenine, N-Ethyl-1α-hydroxy-17-veratroyldictyzine, and Paniculamine. J Am Chem Soc 2016; 138:10830-3. [PMID: 27525345 PMCID: PMC5076861 DOI: 10.1021/jacs.6b07268] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The denudatine-type diterpenoid alkaloids cochlearenine, N-ethyl-1α-hydroxy-17-veratroyldictyzine, and paniculamine have been synthesized for the first time (25, 26, and 26 steps from 16, respectively). These syntheses take advantage of a common intermediate (8) that we have previously employed in preparing aconitine-type natural products. The syntheses reported herein complete the realization of a unified strategy for the preparation of C20, C19, and C18 diterpenoid alkaloids.
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Affiliation(s)
- Kevin G. M. Kou
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Beryl X. Li
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | | | | | | | - Antonio G. DiPasquale
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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32
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Gong J, Chen H, Liu XY, Wang ZX, Nie W, Qin Y. Total synthesis of atropurpuran. Nat Commun 2016; 7:12183. [PMID: 27387707 PMCID: PMC4941107 DOI: 10.1038/ncomms12183] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 06/09/2016] [Indexed: 02/07/2023] Open
Abstract
Due to their architectural intricacy and biological significance, the synthesis of polycyclic diterpenes and their biogenetically related alkaloids have been the subject of considerable interest over the last few decades, with progress including the impressive synthesis of several elusive targets. Despite tremendous efforts, conquering the unique structural types of this large natural product family remains a long-term challenge. The arcutane diterpenes and related alkaloids, bearing a congested tetracyclo[5.3.3.0(4,9).0(4,12)]tridecane unit, are included in these unsolved enigmas. Here we report a concise approach to the construction of the core structure of these molecules and the first total synthesis of (±)-atropurpuran. Pivotal features of the synthesis include an oxidative dearomatization/intramolecular Diels-Alder cycloaddition cascade, sequential aldol and ketyl-olefin cyclizations to assemble the highly caged framework, and a chemoselective and stereoselective reduction to install the requisite allylic hydroxyl group in the target molecule.
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Affiliation(s)
- Jing Gong
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
| | - Huan Chen
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
| | - Zhi-Xiu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
| | - Wei Nie
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Department of Chemistry of Medicinal Natural Products, West China School of Pharmacy, and State Key Laboratory of Biotherapy, Sichuan University, No. 17, Section 3, Renmin Nan Road, Chengdu 610041, China
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33
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Levrier C, Sadowski MC, Nelson CC, Davis RA. Cytotoxic C20 Diterpenoid Alkaloids from the Australian Endemic Rainforest Plant Anopterus macleayanus. JOURNAL OF NATURAL PRODUCTS 2015; 78:2908-2916. [PMID: 26600001 DOI: 10.1021/acs.jnatprod.5b00509] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In order to identify new anticancer compounds from nature, a prefractionated library derived from Australian endemic plants was generated and screened against the prostate cancer cell line LNCaP using a metabolic assay. Fractions from the seeds, leaves, and wood of Anopterus macleayanus showed cytotoxic activity and were subsequently investigated using a combination of bioassay-guided fractionation and mass-directed isolation. This led to the identification of four new diterpenoid alkaloids, 6α-acetoxyanopterine (1), 4'-hydroxy-6α-acetoxyanopterine (2), 4'-hydroxyanopterine (3), and 11α-benzoylanopterine (4), along with four known compounds, anopterine (5), 7β-hydroxyanopterine (6), 7β,4'-dihydroxyanopterine (7), and 7β-hydroxy-11α-benzoylanopterine (8); all compounds were purified as their trifluoroacetate salt. The chemical structures of 1-8 were elucidated after analysis of 1D/2D NMR and MS data. Compounds 1-8 were evaluated for cytotoxic activity against a panel of human prostate cancer cells (LNCaP, C4-2B, and DuCaP) and nonmalignant cell lines (BPH-1 and WPMY-1), using a live-cell imaging system and a metabolic assay. All compounds showed potent cytotoxicity with IC50 values of <400 nM; compound 1 was the most active natural product from this series, with an IC50 value of 3.1 nM toward the LNCaP cell line. The live-cell imaging assay on 1-8 showed a concentration- and time-dependent effect on the cell morphology and proliferation of LNCaP cells.
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Affiliation(s)
- Claire Levrier
- Eskitis Institute for Drug Discovery, Griffith University , Brisbane, QLD 4111, Australia
- Australian Prostate Cancer Research Centre-Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute , Brisbane, QLD 4102, Australia
| | - Martin C Sadowski
- Australian Prostate Cancer Research Centre-Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute , Brisbane, QLD 4102, Australia
| | - Colleen C Nelson
- Australian Prostate Cancer Research Centre-Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute , Brisbane, QLD 4102, Australia
| | - Rohan A Davis
- Eskitis Institute for Drug Discovery, Griffith University , Brisbane, QLD 4111, Australia
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34
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Tang TX, Chen QF, Liu XY, Jian XX, Wang FP. New C20-diterpenoid alkaloids from Aconitum vilmorrianum and structural revision of 2-O-acetylorochrine and orochrine. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2015; 18:315-327. [PMID: 26479584 DOI: 10.1080/10286020.2015.1084506] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Three new C20-diterpenoid alkaloids vilmorrianines E (1), F (2), and G (3) were isolated from the whole plants of Aconitum vilmorrianum, along with one artifact N-chloromethyl vilmorrianine E hydrochloride (4), as well as two known alkaloids hemsleyaconitines F (5) and G (6). The structures of 1-4 were established by HR-ESI-MS, 1D-, 2D-NMR (HMQC, HMBC, and NOESY), and single-crystal X-ray diffraction analysis. In addition, the structures of naturally occurring 2-O-acetylorochrine (7) and orochrine (8) were revised to be the known alkaloids heterophylloidine (9) and deacetyl heterophylloidine (10), respectively, on the basis of consideration of transannular effect and chemical correlations.
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Affiliation(s)
- Tian-Xing Tang
- a Department of Chemistry of Medicinal Natural Products , West China College of Pharmacy, Sichuan University , Chengdu 610041 , China
| | - Qi-Feng Chen
- a Department of Chemistry of Medicinal Natural Products , West China College of Pharmacy, Sichuan University , Chengdu 610041 , China
| | - Xiao-Yu Liu
- a Department of Chemistry of Medicinal Natural Products , West China College of Pharmacy, Sichuan University , Chengdu 610041 , China
| | - Xi-Xian Jian
- a Department of Chemistry of Medicinal Natural Products , West China College of Pharmacy, Sichuan University , Chengdu 610041 , China
| | - Feng-Peng Wang
- a Department of Chemistry of Medicinal Natural Products , West China College of Pharmacy, Sichuan University , Chengdu 610041 , China
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35
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Affiliation(s)
- Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education; West China School of Pharmacy and; State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P. R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education; West China School of Pharmacy and; State Key Laboratory of Biotherapy; Sichuan University; Chengdu 610041 P. R. China
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36
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Zhang ZT, Liu XY, Chen DL, Wang FP. Three New C 20-Diterpenoid Alkaloids from Aconitum tanguticum var. trichocarpum. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Continuous investigations on the whole herbs of Aconitum tanguticum var. trichocarpum led to the isolation of three new C20-diterpenoid alkaloids trichocarpisines A–C (1–3). Their structures were elucidated on the basis of extensive interpretation of the spectroscopic data.
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Affiliation(s)
- Zhong-Tang Zhang
- Department of Chemistry of Medicinal Natural Products, West China College of Pharmacy, Sichuan University, No. 17, Duan 3, Renmin Nan Road, Chengdu 610041, P.R. China
| | - Xiao-Yu Liu
- Department of Chemistry of Medicinal Natural Products, West China College of Pharmacy, Sichuan University, No. 17, Duan 3, Renmin Nan Road, Chengdu 610041, P.R. China
| | - Dong-Lin Chen
- Department of Chemistry of Medicinal Natural Products, West China College of Pharmacy, Sichuan University, No. 17, Duan 3, Renmin Nan Road, Chengdu 610041, P.R. China
| | - Feng-Peng Wang
- Department of Chemistry of Medicinal Natural Products, West China College of Pharmacy, Sichuan University, No. 17, Duan 3, Renmin Nan Road, Chengdu 610041, P.R. China
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37
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Weber M, Owens K, Sarpong R. Atropurpuran - Missing Biosynthetic Link Leading to the Hetidine and Arcutine C 20-Diterpenoid Alkaloids or an Oxidative Degradation Product? Tetrahedron Lett 2015; 56:3600-3603. [PMID: 26028789 DOI: 10.1016/j.tetlet.2015.01.111] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A possible biosynthetic link between atropurpuran, the hetidine diterpenoid alkaloids and the alkaloid arcutine and congeners is proposed. The feasibility of aspects of this biosynthesis, especially key 1,2-rearrangements, have been examined computationally.
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Affiliation(s)
- Manuel Weber
- Latimer Hall, Department of Chemistry, University of California, Berkeley, CA 94720, Tel: 510-643-6312
| | - Kyle Owens
- Latimer Hall, Department of Chemistry, University of California, Berkeley, CA 94720, Tel: 510-643-6312
| | - Richmond Sarpong
- Latimer Hall, Department of Chemistry, University of California, Berkeley, CA 94720, Tel: 510-643-6312
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38
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Chen QF, Wang FP, Liu XY. Generating Skeletal Diversity from the C19-Diterpenoid Alkaloid Deltaline: A Ring-Distortion Approach. Chemistry 2015; 21:8946-50. [DOI: 10.1002/chem.201500839] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Indexed: 01/25/2023]
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39
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Hamlin AM, Lapointe D, Owens K, Sarpong R. Studies on C20-diterpenoid alkaloids: synthesis of the hetidine framework and its application to the synthesis of dihydronavirine and the atisine skeleton. J Org Chem 2014; 79:6783-800. [PMID: 25004408 PMCID: PMC4120980 DOI: 10.1021/jo501214b] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Indexed: 01/25/2023]
Abstract
The full details of a synthesis of the hetidine framework of the C20-diterpenoid alkaloids and its conversion to the atisine core structure are reported. The application of the hetidine framework to the synthesis of dihydronavirine, which is the formal reduction product of the natural product navirine, is also described. Key to the success of these studies is the use of a Ga(III)-catalyzed cycloisomerization reaction of alkynylindenes to prepare a [6-7-6] framework that was advanced to the hetidine skeleton. Furthermore, a Michael/aldol sequence was developed for the construction of the bicyclo[2.2.2] framework that is characteristic of the hetidines and atisines.
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Affiliation(s)
- Amy M. Hamlin
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - David Lapointe
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Kyle Owens
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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40
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Liu XY, Chen DYK. Synthesis of the C18-Norditerpenoid Alkaloid Neofinaconitine: A Lesson in Convergent Synthesis Planning. Angew Chem Int Ed Engl 2013; 53:924-6. [DOI: 10.1002/anie.201309201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Indexed: 11/10/2022]
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41
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Speck K, Magauer T. The chemistry of isoindole natural products. Beilstein J Org Chem 2013; 9:2048-78. [PMID: 24204418 PMCID: PMC3817534 DOI: 10.3762/bjoc.9.243] [Citation(s) in RCA: 241] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 09/18/2013] [Indexed: 12/16/2022] Open
Abstract
This review highlights the chemical and biological aspects of natural products containing an oxidized or reduced isoindole skeleton. This motif is found in its intact or modified form in indolocarbazoles, macrocyclic polyketides (cytochalasan alkaloids), the aporhoeadane alkaloids, meroterpenoids from Stachybotrys species and anthraquinone-type alkaloids. Concerning their biological activity, molecular structure and synthesis, we have limited this review to the most inspiring examples. Within different congeners, we have selected a few members and discussed the synthetic routes in more detail. The putative biosynthetic pathways of the presented isoindole alkaloids are described as well.
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Affiliation(s)
- Klaus Speck
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstraße 5–13, 81377 München, Germany
| | - Thomas Magauer
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstraße 5–13, 81377 München, Germany
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43
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Hutt OE, Doan TL, Georg GI. Synthesis of skeletally diverse and stereochemically complex library templates derived from isosteviol and steviol. Org Lett 2013; 15:1602-5. [PMID: 23530630 PMCID: PMC3638842 DOI: 10.1021/ol400385w] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We have applied a diversity-oriented approach for the synthesis of skeletally diverse and stereochemically complex templates for small-molecule library production by performing Beckmann rearrangement and Beckmann fragmentation reactions on the bicyclo[3.2.1]octane rings of steviol and isosteviol, aglycones derived from the diterpene natural product stevioside. The optimization of these two reaction pathways is presented along with the successful application of a photo-Beckmann rearrangement. This work also led to the discovery of cyano-Prins-type and Thorpe-Ziegler-type cyclization reactions.
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Affiliation(s)
- Oliver E Hutt
- Institute for Therapeutics Discovery and Development, Department of Medicinal Chemistry, College of Pharmacy, University of Minnesota, 717 Delaware Street SE, Minneapolis, Minnesota 55414, United States
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44
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Hamlin AM, de Jesus Cortez F, Lapointe D, Sarpong R. Gallium(III)-Catalyzed Cycloisomerization Approach to the Diterpenoid Alkaloids: Construction of the Core Structure for the Hetidines and Hetisines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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Hamlin AM, Cortez FDJ, Lapointe D, Sarpong R. Gallium(III)-catalyzed cycloisomerization approach to the diterpenoid alkaloids: construction of the core structure for the hetidines and hetisines. Angew Chem Int Ed Engl 2013; 52:4854-7. [PMID: 23533012 DOI: 10.1002/anie.201209030] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 01/11/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Amy M Hamlin
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
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46
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Jiang B, Lin S, Zhu C, Wang S, Wang Y, Chen M, Zhang J, Hu J, Chen N, Yang Y, Shi J. Diterpenoid alkaloids from the lateral root of Aconitum carmichaelii. JOURNAL OF NATURAL PRODUCTS 2012; 75:1145-1159. [PMID: 22607495 DOI: 10.1021/np300225t] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Twenty-six new diterpenoid alkaloids, 1-26 (1-4: hetisan-type C(20)-diterpenoid alkaloids; 5-26: aconitane C(19)-diterpenoid alkaloids), and two known analogues, hypaconitine 27 and benzoylmesaconine 28, have been isolated from a water extract of the lateral root of Aconitum carmichaelii. Compounds 7 and 8 are rare examples of conformational isomers obtained from the same material. The conformation and conformational transformation of ring A in the C(19)-diterpenoid alkaloids are discussed on the basis of NMR data analysis in combination with single-crystal X-ray crystallography of 6 and 27 by anomalous scattering of Cu Kα radiation. In preliminary analgesic and toxicity assays, the isomer with ring A in the chair conformation (8 or 27) was found to be more active than that with ring A in the boat conformation (7 or 27a). In addition, 15, 16, and 19 showed neuroprotective activity.
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Affiliation(s)
- Bingya Jiang
- 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, People's Republic of China
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He YQ, Yao BH, Ma ZY. Diterpenoid alkaloids from a Tibetan medicinal plant Aconitum richardsonianum var. pseudosessiliflorum and their cytotoxic activity. J Pharm Anal 2012; 1:57-59. [PMID: 29403683 PMCID: PMC5760761 DOI: 10.1016/s2095-1779(11)70010-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Accepted: 07/06/2010] [Indexed: 11/24/2022] Open
Abstract
The chemical constituents from Aconitum richardsonianum var. pseudosessiliflorum were investigated. The roots of this plant were extracted three times with 90% EtOH at the room temperature. The ethanol extracts were combined and concentrated under reduced pressure to yield residue, which was suspended in water and successively partitioned with chloroform. The chloroform extraction was isolated and purified by silica gel and Sephadex LH-20 column chromatography. Six compounds were isolated and elucidated as delelatine (1), isodelpheline (2), 3-acetylaconitine (3), isoatisine (4), nordhagenine A (5) and yunaconitine (6). Compounds 1–5 were obtained from Aconitum Brunneum for the first time. Compound (1) showed significant cytotoxic activities (IC50= 4.36 μM) against the human tumor cell line P388.
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Affiliation(s)
- Yang-Qing He
- Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China
| | - Bing-Hua Yao
- Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China
| | - Zhan-Ying Ma
- Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China.,Department of Chemistry, Xianyang Normal University, Xianyang 712000, China
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Hayashi R, Ma ZX, Hsung RP. A tandem 1,3-H-shift-6π-electrocyclization-cyclic 2-amido-diene intramolecular Diels-Alder cycloaddition approach to BCD-Ring of atropurpuran. Org Lett 2012; 14:252-5. [PMID: 22149386 PMCID: PMC3253247 DOI: 10.1021/ol203030a] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An approach toward the BCD-ring of atropurpuran via a sequence of allenic 1,3-H shift, 6π-electron pericyclic ring closure, and intramolecular Diels-Alder cycloaddition of cyclic 2-amidodiene is described.
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Affiliation(s)
- Ryuji Hayashi
- Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53705, USA
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Abstract
Terpenes and alkaloids are ever-growing classes of natural products that provide new molecular structures which inspire chemists and possess a broad range of biological activity. Terpenoid-alkaloids originate from the same prenyl units that construct terpene skeletons. However, during biosynthesis, a nitrogen atom (or atoms) is introduced in the form of β-aminoethanol, ethylamine, or methylamine. Nitrogen incorporation can occur either before, during, or after the cyclase phase. The outcome of this unique biosynthesis is the formation of natural products containing unprecedented structures. These complex structural motifs expose current limitations in organic chemistry, thus providing opportunities for invention. This review focuses on total syntheses of terpenoid-alkaloids and unique issues presented by this class of natural products. More specifically, it examines how these syntheses relate to the way terpenoid-alkaloids are made in Nature. Developments in chemistry that have facilitated these syntheses are emphasized, as well as chemical technology needed to conquer those that evade synthesis.
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Affiliation(s)
- Emily C. Cherney
- Department of Chemistry, The Scripps Research Institute 10550 N. Torrey Pines Rd, La Jolla, CA 92037 phone: (+1) 858-784-7370 fax: (+1) 858-784-7375
| | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute 10550 N. Torrey Pines Rd, La Jolla, CA 92037 phone: (+1) 858-784-7370 fax: (+1) 858-784-7375
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Affiliation(s)
- Reuben J Peters
- Department of Biochemistry, Biophysics, & Molecular Biology, Iowa State University, Ames, IA 50011, USA.
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