1
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You X, Yao Y, Liu P, Chen L, Xie Y, Li G, Hong L. Synthesis of Isoquinuclidines via Dearomative Diels-Alder Reaction of Cyclic Amidines with Indoles. J Org Chem 2024; 89:3635-3643. [PMID: 38359465 DOI: 10.1021/acs.joc.3c02736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
The development and utilization of new dienes and dienophiles for the controlled synthesis of isoquinuclidines is highly appealing. Herein, we describe a novel strategy for diastereoselective synthesis of indoline-fused isoquinuclidines via copper-catalyzed dearomative Diels-Alder reaction of cyclic amidines with indoles. This protocol avoids the use of unstable DHPs and activated alkenes, offering a more efficient and selective approach to synthesize isoquinuclidines.
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Affiliation(s)
- Xiaobin You
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Ying Yao
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Pengyutian Liu
- School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China
| | - Lu Chen
- School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China
| | - Yubao Xie
- School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China
| | - Guofeng Li
- School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen 518055, China
| | - Liang Hong
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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2
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Tang SY, Tan CH, Sim KS, Yong KT, Lim KH, Low YY, Lim SH. Polyneurines A-H, iboga alkaloids from Tabernaemontana polyneura. PHYTOCHEMISTRY 2023; 208:113587. [PMID: 36646163 DOI: 10.1016/j.phytochem.2023.113587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/09/2023] [Accepted: 01/13/2023] [Indexed: 06/17/2023]
Abstract
Eight undescribed iboga alkaloids, polyneurines A-H, were isolated from the bark of Tabernaemontana polyneura. The structures of these alkaloids were established by interpretation of the MS and NMR data, while the configurations were determined using GIAO NMR calculations and DP4+ probability analysis, TDDFT-ECD method, or X-ray diffraction analysis. Polyneurine A possesses a γ-lactone unit embedded within the iboga skeleton, while polyneurines D and E incorporate a formylmethyl moiety at C-3 of the iboga skeleton. Biosynthetic pathways towards the formation of polyneurines A, C, D, and E were proposed.
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Affiliation(s)
- Sin-Yee Tang
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Chun-Hoe Tan
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia; Department of Biotechnology, Faculty of Applied Science, Lincoln University, 47301, Petaling Jaya, Selangor, Malaysia
| | - Kae-Shin Sim
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kien-Thai Yong
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kuan-Hon Lim
- School of Pharmacy, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor, Malaysia
| | - Yun-Yee Low
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Siew-Huah Lim
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
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3
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Xu M, Peng R, Min Q, Hui S, Chen X, Yang G, Qin S. Bisindole natural products: A vital source for the development of new anticancer drugs. Eur J Med Chem 2022; 243:114748. [PMID: 36170798 DOI: 10.1016/j.ejmech.2022.114748] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/02/2022] [Accepted: 09/03/2022] [Indexed: 11/18/2022]
Abstract
Currently, the number of new cancer cases and deaths worldwide is increasing year on year. In addition to the requirement for cancer prevention, the top priority is still to seek the effective cure of cancer. In over a half century of constant exploration, increasing attention has been paid to the excellent anticancer activity of natural products, with more and more natural products isolated, identified and detected. For this study, the focus lies the natural products of bisindole, where two indole molecules are indirectly linked or directly polymerized, developing the diversity of structure and mechanism, accompanied with the better anticancer activity than monomers. There has been a long history of applying indirubin and vincristine in cancer treatment, verifying the anticancer effect of bisindoles. Vincribine, midostaurin and other anticancer drugs have also been developed and commercialized. In this paper, a review regarding the potential therapeutic effect of bisindole alkaloids extracted from various natural products was carried out, in which the progress made in research of 242 bisindole alkaloids for cancer treatment was introduced. These compounds may be applicable as medicinal products for clinical research in the future.
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Affiliation(s)
- Mengwei Xu
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China
| | - Rui Peng
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China
| | - Qing Min
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China
| | - Siwen Hui
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Department of Hepatology, China Military Institute of Chinese Materia, The Fifth Medical Center of PLA General Hospital, PR China
| | - Xin Chen
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China
| | - Guang Yang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin, PR China.
| | - Shuanglin Qin
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Department of Hepatology, China Military Institute of Chinese Materia, The Fifth Medical Center of PLA General Hospital, PR China.
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4
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Zhang G, Favela D, Chow WL, Iyer RN, Pell AJ, Olson DE. Synthesis of Tertiary Amines through Extrusive Alkylation of Carbamates. Org Lett 2022; 24:6208-6212. [PMID: 35972395 PMCID: PMC9420822 DOI: 10.1021/acs.orglett.2c02516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Basic amines are key elements of many biologically active natural products and pharmaceuticals. Given their inherent reactivity, it is often necessary to protect basic amines during target-directed synthesis, which results in wasteful protection/deprotection sequences. We report a step-economical approach enabling the protection of secondary amines as carbamates prior to their conversion to tertiary amines via the formal extrusion of CO2. This method is applied to the synthesis of iboga alkaloids (±)-conodusine A and (±)-conodusine B.
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Affiliation(s)
- Guoliang Zhang
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - David Favela
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Winston L Chow
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Rishab N Iyer
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Alexander J Pell
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - David E Olson
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
- Department of Biochemistry & Molecular Medicine, School of Medicine, University of California, Davis, 2700 Stockton Blvd., Suite 2102, Sacramento, California 95817, United States
- Center for Neuroscience, University of California, Davis, 1544 Newton Ct., Davis, California 95618, United States
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5
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Li BJ, Ma Y, Qian HS, He HP, Huang CH, Yu GD, Tang BQ. Two new aspidosperma-type monoterpenoid indole alkaloids from Ervatamia officinalis. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2022; 25:1-7. [PMID: 35735254 DOI: 10.1080/10286020.2022.2090345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 06/11/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
Two new aspidosperma-type monoterpenoid indole alkaloids, 16-O-methylvoafinine (1) and 14,15-diepi-voafinidine (2) were isolated from the aerial parts of Ervatamia officinalis. Their structures were established by comprehensive spectroscopic analysis including 1D and 2D NMR, HR-ESI-MS, and electronic circular dichroism calculation. The isolated compounds were evaluated for cytotoxic activities against HepG2, MCF-7, and A549 cell lines by CCK-8 assay.
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Affiliation(s)
- Bao-Jing Li
- College of Traditional Chinese Medicine, Yunnan University of Chinese Medicine, Kunming 650500, China
| | - Yan Ma
- Department of Medical Science, Shunde Polytechnic, Foshan 528333, China
| | - Hai-Shan Qian
- College of Traditional Chinese Medicine, Yunnan University of Chinese Medicine, Kunming 650500, China
| | - Hong-Ping He
- College of Traditional Chinese Medicine, Yunnan University of Chinese Medicine, Kunming 650500, China
| | - Cui-Hong Huang
- Department of Medical Science, Shunde Polytechnic, Foshan 528333, China
| | - Guo-Dong Yu
- Department of Medical Science, Shunde Polytechnic, Foshan 528333, China
| | - Ben-Qin Tang
- Department of Medical Science, Shunde Polytechnic, Foshan 528333, China
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6
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Long D, Zhao G, Liu Z, Chen P, Ma S, Xie X, She X. Enantioselective Pictet–Spengler Condensation to Access the Total Synthesis of (+)‐Tabertinggine. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dan Long
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 730000 Lanzhou P. R. China
| | - Gaoyuan Zhao
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 730000 Lanzhou P. R. China
| | - Zhiqiang Liu
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 730000 Lanzhou P. R. China
| | - Peiqi Chen
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 730000 Lanzhou P. R. China
| | - Shiqiang Ma
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 730000 Lanzhou P. R. China
| | - Xingang Xie
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 730000 Lanzhou P. R. China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University 730000 Lanzhou P. R. China
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7
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Yu JH, Yu ZP, Capon RJ, Zhang H. Natural Enantiomers: Occurrence, Biogenesis and Biological Properties. Molecules 2022; 27:molecules27041279. [PMID: 35209066 PMCID: PMC8880303 DOI: 10.3390/molecules27041279] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/09/2022] [Accepted: 02/10/2022] [Indexed: 02/01/2023] Open
Abstract
The knowledge that natural products (NPs) are potent and selective modulators of important biomacromolecules (e.g., DNA and proteins) has inspired some of the world’s most successful pharmaceuticals and agrochemicals. Notwithstanding these successes and despite a growing number of reports on naturally occurring pairs of enantiomers, this area of NP science still remains largely unexplored, consistent with the adage “If you don’t seek, you don’t find”. Statistically, a rapidly growing number of enantiomeric NPs have been reported in the last several years. The current review provides a comprehensive overview of recent records on natural enantiomers, with the aim of advancing awareness and providing a better understanding of the chemical diversity and biogenetic context, as well as the biological properties and therapeutic (drug discovery) potential, of enantiomeric NPs.
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Affiliation(s)
- Jin-Hai Yu
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China; (J.-H.Y.); (Z.-P.Y.)
| | - Zhi-Pu Yu
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China; (J.-H.Y.); (Z.-P.Y.)
| | - Robert J. Capon
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
- Correspondence: (R.J.C.); (H.Z.)
| | - Hua Zhang
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
- Correspondence: (R.J.C.); (H.Z.)
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8
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Aksenov AV, Aksenov NA, Aleksandrova EV, Aksenov DA, Grishin IY, Sorokina EA, Wenger A, Rubin M. Direct Conversion of 3-(2-Nitroethyl)-1 H-Indoles into 2-(1 H-Indol-2-yl)Acetonitriles. Molecules 2021; 26:6132. [PMID: 34684712 PMCID: PMC8539596 DOI: 10.3390/molecules26206132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/07/2021] [Accepted: 10/09/2021] [Indexed: 11/17/2022] Open
Abstract
The recently discovered [4+1]-spirocyclization of nitroalkenes to indoles provided a convenient new approach to 2-(1H-indol-2-yl)acetonitriles. However, this reaction was complicated by the formation of inert 3-(2-nitroethyl)-1H-indole byproducts. Herein, we offer a workaround this problem that allows for effective transformation of the unwanted byproducts into acetonitrile target molecules.
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Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
| | - Nicolai A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
| | - Elena V. Aleksandrova
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
| | - Dmitrii A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
| | - Igor Yu. Grishin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
| | - Elena A. Sorokina
- Organic Chemistry Department, Peoples’ Friendship University of Russia (RUDN University), 6, Miklukho-Maklaya St., 117198 Moscow, Russia;
| | - Allison Wenger
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA;
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355017 Stavropol, Russia; (N.A.A.); (E.V.A.); (D.A.A.); (I.Y.G.)
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, KS 66045, USA;
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9
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Zhu WT, Chen C, Zhao Q, Han LL, Yang M, Hao XJ, Zhang Y. Isolation and structure elucidation of tabercetimines A-D, four new quaternary monoterpenoid indole alkaloids from Tabernaemontana divaricata. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Gabriel P, Almehmadi YA, Wong ZR, Dixon DJ. A General Iridium-Catalyzed Reductive Dienamine Synthesis Allows a Five-Step Synthesis of Catharanthine via the Elusive Dehydrosecodine. J Am Chem Soc 2021; 143:10828-10835. [PMID: 34254792 PMCID: PMC8397322 DOI: 10.1021/jacs.1c04980] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Indexed: 02/08/2023]
Abstract
A new reductive strategy for the stereo- and regioselective synthesis of functionalized isoquinuclidines has been developed. Pivoting on the chemoselective iridium(I)-catalyzed reductive activation of β,γ-unsaturated δ-lactams, the efficiently produced reactive dienamine intermediates readily undergo [4 + 2] cycloaddition reactions with a wide range of dienophiles, resulting in the formation of bridged bicyclic amine products. This new synthetic approach was extended to aliphatic starting materials, resulting in the efficient formation of cyclohexenamine products, and readily applied as the key step in the shortest (five-step) total synthesis of vinca alkaloid catharanthine to date, proceeding via its elusive biosynthetic precursor, dehydrosecodine.
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Affiliation(s)
- Pablo Gabriel
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Yaseen A. Almehmadi
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
- Department
of Chemistry, Rabigh College of Science and Arts, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Zeng Rong Wong
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Darren J. Dixon
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
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11
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Xie X, She X. Concise Total Syntheses of Bioactive Alkaloids Enabled by Development or Application of Cascade Reactions: A Personnel Adventure. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Xingang Xie
- State Key laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou Gansu 730000 China
| | - Xuegong She
- State Key laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou Gansu 730000 China
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12
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Mohammed AE, Abdul-Hameed ZH, Alotaibi MO, Bawakid NO, Sobahi TR, Abdel-Lateff A, Alarif WM. Chemical Diversity and Bioactivities of Monoterpene Indole Alkaloids (MIAs) from Six Apocynaceae Genera. Molecules 2021; 26:488. [PMID: 33477682 PMCID: PMC7831967 DOI: 10.3390/molecules26020488] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/09/2021] [Accepted: 01/11/2021] [Indexed: 01/06/2023] Open
Abstract
By the end of the twentieth century, the interest in natural compounds as probable sources of drugs has declined and was replaced by other strategies such as molecular target-based drug discovery. However, in the recent times, natural compounds regained their position as extremely important source drug leads. Indole-containing compounds are under clinical use which includes vinblastine and vincristine (anticancer), atevirdine (anti-HIV), yohimbine (erectile dysfunction), reserpine (antihypertension), ajmalicine (vascular disorders), ajmaline (anti-arrhythmic), vincamine (vasodilator), etc. Monoterpene Indole Alkaloids (MIAs) deserve the curiosity and attention of researchers due to their chemical diversity and biological activities. These compounds were considered as an impending source of drug-lead. In this review 444 compounds, were identified from six genera belonging to the family Apocynaceae, will be discussed. These genera (Alstonia, Rauvolfia, Kopsia, Ervatamia, and Tabernaemontana, and Rhazya) consist of 400 members and represent 20% of Apocynaceae species. Only 30 (7.5%) species were investigated, whereas the rest are promising to be investigated. Eleven bioactivities, including antibacterial, antifungal, anti-inflammatory and immunosuppressant activities, were reported. Whereas cytotoxic effect represents 47% of the reported activities. Convincingly, the genera selected in this review are a wealthy source for future anticancer drug lead.
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Affiliation(s)
- Afrah E. Mohammed
- Department of Biology, Faculty of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Zainab H. Abdul-Hameed
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (Z.H.A.-H.); (N.O.B.); (T.R.S.)
| | - Modhi O. Alotaibi
- Department of Biology, Faculty of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Nahed O. Bawakid
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (Z.H.A.-H.); (N.O.B.); (T.R.S.)
| | - Tariq R. Sobahi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (Z.H.A.-H.); (N.O.B.); (T.R.S.)
| | - Ahmed Abdel-Lateff
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, P.O. Box 80260, Jeddah 21589, Saudi Arabia;
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Walied M. Alarif
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, P.O. Box 80207, Jeddah 21589, Saudi Arabia
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13
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Nakayama A, Nakamura T, Zaima T, Fujimoto S, Karanjit S, Namba K. Concise Total Synthesis of Tronocarpine. Angew Chem Int Ed Engl 2021; 60:635-639. [PMID: 32969565 DOI: 10.1002/anie.202009966] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/09/2020] [Indexed: 11/09/2022]
Abstract
A concise total synthesis of tronocarpine, a chippiine-type indole alkaloid, was accomplished. The key feature of this total synthesis is a one-pot construction of the pentacyclic skeleton containing an azabicyclo[3.3.1]nonane core by tandem cyclization from an indole derivative with all carbon side chains and functional groups. This tandem cyclization consists of α,β-unsaturated aldehyde formation, intramolecular aldol reaction, six-membered lactamization, azide reduction, and seven-membered lactamization. The stereochemical outcome in this tandem cyclization is controlled by the stereocenter at the C14 position. This strategy can be utilized to synthesize other chippiine-type alkaloids with azabicyclo[3.3.1]nonane skeletons.
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Affiliation(s)
- Atsushi Nakayama
- Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78 Shomachi, Tokushima, Tokushima, 770-8505, Japan
| | - Tenta Nakamura
- Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78 Shomachi, Tokushima, Tokushima, 770-8505, Japan
| | - Toshihiro Zaima
- Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78 Shomachi, Tokushima, Tokushima, 770-8505, Japan
| | - Saho Fujimoto
- Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78 Shomachi, Tokushima, Tokushima, 770-8505, Japan
| | - Sangita Karanjit
- Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78 Shomachi, Tokushima, Tokushima, 770-8505, Japan
| | - Kosuke Namba
- Graduate School of Pharmaceutical Sciences, Tokushima University, 1-78 Shomachi, Tokushima, Tokushima, 770-8505, Japan
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14
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Nakayama A, Nakamura T, Zaima T, Fujimoto S, Karanjit S, Namba K. Concise Total Synthesis of Tronocarpine. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202009966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Atsushi Nakayama
- Graduate School of Pharmaceutical Sciences Tokushima University 1–78 Shomachi, Tokushima Tokushima 770-8505 Japan
| | - Tenta Nakamura
- Graduate School of Pharmaceutical Sciences Tokushima University 1–78 Shomachi, Tokushima Tokushima 770-8505 Japan
| | - Toshihiro Zaima
- Graduate School of Pharmaceutical Sciences Tokushima University 1–78 Shomachi, Tokushima Tokushima 770-8505 Japan
| | - Saho Fujimoto
- Graduate School of Pharmaceutical Sciences Tokushima University 1–78 Shomachi, Tokushima Tokushima 770-8505 Japan
| | - Sangita Karanjit
- Graduate School of Pharmaceutical Sciences Tokushima University 1–78 Shomachi, Tokushima Tokushima 770-8505 Japan
| | - Kosuke Namba
- Graduate School of Pharmaceutical Sciences Tokushima University 1–78 Shomachi, Tokushima Tokushima 770-8505 Japan
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15
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Iyer RN, Favela D, Zhang G, Olson DE. The iboga enigma: the chemistry and neuropharmacology of iboga alkaloids and related analogs. Nat Prod Rep 2021; 38:307-329. [PMID: 32794540 DOI: 10.1039/d0np00033g] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Covering: 2000 up to 2020 Few classes of natural products have inspired as many chemists and biologists as have the iboga alkaloids. This family of monoterpenoid indole alkaloids includes the anti-addictive compound ibogaine as well as catharanthine, a precursor to the chemotherapeutic vinblastine. Despite being known for over 120 years, these small molecules continue to challenge our assumptions about biosynthetic pathways, catalyze our creativity for constructing complex architectures, and embolden new approaches for treating mental illness. This review will cover recent advances in both the biosynthesis and chemical synthesis of iboga alkaloids as well as their use as next-generation neurotherapeutics. Whenever appropriate, we provide historical context for the discoveries of the past decade and indicate areas that have yet to be resolved. While significant progress regarding their chemistry and pharmacology has been made since the 1960s, it is clear that the iboga alkaloids will continue to stoke scientific innovation for years to come.
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Affiliation(s)
- Rishab N Iyer
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.
| | - David Favela
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.
| | - Guoliang Zhang
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.
| | - David E Olson
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA. and Department of Biochemistry & Molecular Medicine, School of Medicine, University of California, Davis, 2700 Stockton Blvd, Suite 2102, Sacramento, CA 95817, USA and Center for Neuroscience, University of California, Davis, 1544 Newton Ct, Davis, CA 95618, USA
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16
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Babiaka SB, Simoben CV, Abuga KO, Mbah JA, Karpoormath R, Ongarora D, Mugo H, Monya E, Cho-Ngwa F, Sippl W, Loveridge EJ, Ntie-Kang F. Alkaloids with Anti-Onchocercal Activity from Voacanga africana Stapf (Apocynaceae): Identification and Molecular Modeling. Molecules 2020; 26:E70. [PMID: 33375687 PMCID: PMC7795662 DOI: 10.3390/molecules26010070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/16/2020] [Accepted: 12/22/2020] [Indexed: 12/13/2022] Open
Abstract
A new iboga-vobasine-type isomeric bisindole alkaloid named voacamine A (1), along with eight known compounds-voacangine (2), voacristine (3), coronaridine (4), tabernanthine (5), iboxygaine (6), voacamine (7), voacorine (8) and conoduramine (9)-were isolated from the stem bark of Voacangaafricana. The structures of the compounds were determined by comprehensive spectroscopic analyses. Compounds 1, 2, 3, 4, 6, 7 and 8 were found to inhibit the motility of both the microfilariae (Mf) and adult male worms of Onchocerca ochengi, in a dose-dependent manner, but were only moderately active on the adult female worms upon biochemical assessment at 30 μM drug concentrations. The IC50 values of the isolates are 2.49-5.49 µM for microfilariae and 3.45-17.87 µM for adult males. Homology modeling was used to generate a 3D model of the O. ochengi thioredoxin reductase target and docking simulation, followed by molecular dynamics and binding free energy calculations attempted to offer an explanation of the anti-onchocercal structure-activity relationship (SAR) of the isolated compounds. These alkaloids are new potential leads for the development of antifilarial drugs. The results of this study validate the traditional use of V. africana in the treatment of human onchocerciasis.
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Affiliation(s)
- Smith B. Babiaka
- Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea CM-00237, Cameroon;
- AgroEco Health Platform, International Institute of Tropical Agriculture, Cotonou, Abomey-Calavi BEN-00229, Benin
| | - Conrad V. Simoben
- Institute for Pharmacy, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle, Germany; (C.V.S.); (W.S.)
| | - Kennedy O. Abuga
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Nairobi, Nairobi P.O. Box 19676–00202, Kenya; (K.O.A.); (D.O.); (H.M.)
| | - James A. Mbah
- Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea CM-00237, Cameroon;
| | - Rajshekhar Karpoormath
- Department of Pharmaceutical Chemistry, School of Chemistry, University of KwaZulu-Natal, Durban 4001, South Africa;
| | - Dennis Ongarora
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Nairobi, Nairobi P.O. Box 19676–00202, Kenya; (K.O.A.); (D.O.); (H.M.)
| | - Hannington Mugo
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Nairobi, Nairobi P.O. Box 19676–00202, Kenya; (K.O.A.); (D.O.); (H.M.)
| | - Elvis Monya
- ANDI Centre of Excellence for Onchocerciasis Drug Research, Biotechnology Unit, Faculty of Science, University of Buea, P.O. Box 63, Buea CM-00237, Cameroon; (E.M.); (F.C.-N.)
| | - Fidelis Cho-Ngwa
- ANDI Centre of Excellence for Onchocerciasis Drug Research, Biotechnology Unit, Faculty of Science, University of Buea, P.O. Box 63, Buea CM-00237, Cameroon; (E.M.); (F.C.-N.)
| | - Wolfgang Sippl
- Institute for Pharmacy, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle, Germany; (C.V.S.); (W.S.)
| | - Edric Joel Loveridge
- Department of Chemistry, Swansea University, Singleton Park, Swansea SA2 8PP, UK
| | - Fidele Ntie-Kang
- Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea CM-00237, Cameroon;
- Institute for Pharmacy, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle, Germany; (C.V.S.); (W.S.)
- Institute of Botany, Technical University of Dresden, 01217 Dresden, Germany
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17
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Taberdivamines A and B, two new quaternary indole alkaloids from Tabernaemontana divaricata. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152400] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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18
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Zhao F, Masci D, Ferla S, Varricchio C, Brancale A, Colonna S, Black GW, Turner NJ, Castagnolo D. Monoamine Oxidase (MAO-N) Biocatalyzed Synthesis of Indoles from Indolines Prepared via Photocatalytic Cyclization/Arylative Dearomatization. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01351] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Fei Zhao
- School of Cancer and Pharmaceutical Sciences, King’s College London, London SE1 9NH, United Kingdom
| | - Domiziana Masci
- School of Cancer and Pharmaceutical Sciences, King’s College London, London SE1 9NH, United Kingdom
| | - Salvatore Ferla
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, King Edward VII Avenue, Cardiff CF10 3NB, United Kingdom
| | - Carmine Varricchio
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, King Edward VII Avenue, Cardiff CF10 3NB, United Kingdom
| | - Andrea Brancale
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, King Edward VII Avenue, Cardiff CF10 3NB, United Kingdom
| | - Serena Colonna
- School of Cancer and Pharmaceutical Sciences, King’s College London, London SE1 9NH, United Kingdom
| | - Gary W. Black
- Department of Applied Sciences, Northumbria University, Ellison Place, Newcastle upon Tyne NE1 8ST, United Kingdom
| | - Nicholas J. Turner
- School of Chemistry, Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
| | - Daniele Castagnolo
- School of Cancer and Pharmaceutical Sciences, King’s College London, London SE1 9NH, United Kingdom
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19
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Gao X, Li C, Yuan Y, Xie X, Zhang Z. Visible-light-induced intramolecular radical cascade of α-bromo-N-benzyl-alkylamides: a new strategy to synthesize tetracyclic N-fused indolo[2,1-a]isoquinolin-6(5H)-ones. Org Biomol Chem 2020; 18:263-271. [PMID: 31829389 DOI: 10.1039/c9ob02294e] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Polycyclic indole scaffolds are ubiquitous in pharmaceuticals and natural products and in materials science. Here, we present a visible-light-initiated intramolecular aryl migration/desulfonylation/cyclization cascade reaction for the synthesis of tetracyclic indolo[2,1-a]isoquinolin-6(5H)-ones. This protocol not only exhibited a wide substrate scope but also provided a mild route to access a variety of tetracyclic N-fused indoles.
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Affiliation(s)
- Xiaoshuang Gao
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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20
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Aksenov AV, Aksenov DA, Aksenov NA, Aleksandrova EV, Rubin M. Preparation of Stereodefined 2-(3-Oxoindolin-2-yl)-2-Arylacetonitriles via One-Pot Reaction of Indoles with Nitroalkenes. J Org Chem 2019; 84:12420-12429. [DOI: 10.1021/acs.joc.9b01874] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Alexander V. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russian Federation
| | - Dmitrii A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russian Federation
| | - Nicolai A. Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russian Federation
| | - Elena V. Aleksandrova
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russian Federation
| | - Michael Rubin
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russian Federation
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
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21
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Gao XH, Fan YY, Liu QF, Cho SH, Pauli GF, Chen SN, Yue JM. Suadimins A-C, Unprecedented Dimeric Quinoline Alkaloids with Antimycobacterial Activity from Melodinus suaveolens. Org Lett 2019; 21:7065-7068. [PMID: 31411483 DOI: 10.1021/acs.orglett.9b02630] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The suadimins A-C (1-3) from Melodinus suaveolens are the first example of monoterpenoid quinoline alkaloid dimers featuring an unprecedented carbon skeleton. Their structures and absolute configurations were established on the basis of extensive spectroscopic analyses, electric circular dichroism (ECD), and X-ray crystallography. Suadimin A showed significant antimycobacterial activity in vitro with an MIC90 of 6.76 μM against the H37Rv strain of M. tuberculosis.
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Affiliation(s)
- Xin-Hua Gao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, People's Republic of China
| | - Yao-Yue Fan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, People's Republic of China
| | - Qun-Fang Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, People's Republic of China
| | - Sang-Hyun Cho
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612, United States
| | - Guido F Pauli
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612, United States
| | - Shao-Nong Chen
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, Illinois 60612, United States
| | - Jian-Min Yue
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, People's Republic of China
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22
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Gabriel P, Gregory AW, Dixon DJ. Iridium-Catalyzed Aza-Spirocyclization of Indole-Tethered Amides: An Interrupted Pictet–Spengler Reaction. Org Lett 2019; 21:6658-6662. [DOI: 10.1021/acs.orglett.9b02194] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pablo Gabriel
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Alex W. Gregory
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Darren J. Dixon
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
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23
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Kono M, Harada S, Nozaki T, Hashimoto Y, Murata SI, Gröger H, Kuroda Y, Yamada KI, Takasu K, Hamada Y, Nemoto T. Asymmetric Formal Synthesis of (+)-Catharanthine via Desymmetrization of Isoquinuclidine. Org Lett 2019; 21:3750-3754. [PMID: 31021094 DOI: 10.1021/acs.orglett.9b01198] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Although (+)-catharanthine is an attractive alkaloid for both clinical research and organic synthetic chemistry, only a limited number of approaches for its catalytic asymmetric synthesis exist. Herein, we describe a novel strategy for synthesizing a chiral intermediate of (+)-catharanthine via phosphoric acid-catalyzed asymmetric desymmetrization of a meso-isoquinuclidine possessing a 1,3-diol unit that was synthesized by a formal amide insertion reaction.
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Affiliation(s)
- Masato Kono
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1, Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Shingo Harada
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1, Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Tomoyuki Nozaki
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1, Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Yoshinori Hashimoto
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1, Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Shun-Ichi Murata
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1, Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Harald Gröger
- Chair of Organic Chemistry I, Faculty of Chemistry , Bielefeld University , Universitätsstraße 25 , 33615 Bielefeld , Germany
| | - Yusuke Kuroda
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Ken-Ichi Yamada
- Graduate School of Pharmaceutical Sciences , Tokushima University , Shomachi, Tokushima 770-8505 , Japan
| | - Kiyosei Takasu
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Yasumasa Hamada
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1, Inohana , Chuo-ku, Chiba 260-8675 , Japan
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences , Chiba University , 1-8-1, Inohana , Chuo-ku, Chiba 260-8675 , Japan.,Molecular Chirality Research Center , Chiba University , 1-33, Yayoi-cho , Inage-ku, Chiba 263-8522 , Japan
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24
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Wang L, Zhou J, Ding TM, Yan ZQ, Hou SH, Zhu GD, Zhang SY. Asymmetric N-Hydroxyalkylation of Indoles with Ethyl Glyoxalates Catalyzed by a Chiral Phosphoric Acid: Highly Enantioselective Synthesis of Chiral N,O-Aminal Indole Derivatives. Org Lett 2019; 21:2795-2799. [DOI: 10.1021/acs.orglett.9b00757] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Le Wang
- Shanghai Jiao Tong University Affiliated Sixth People’s Hospital South Campus & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
- School of Chemistry & Environmental Engineering, International Healthcare Innovation Institute, Wuyi University, Jiangmen, 529020, P. R. China
| | - Jia Zhou
- Shanghai Jiao Tong University Affiliated Sixth People’s Hospital South Campus & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Tong-Mei Ding
- Shanghai Jiao Tong University Affiliated Sixth People’s Hospital South Campus & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Zhi-Qiang Yan
- Shanghai Jiao Tong University Affiliated Sixth People’s Hospital South Campus & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Si-Hua Hou
- Shanghai Jiao Tong University Affiliated Sixth People’s Hospital South Campus & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Guo-Dong Zhu
- Shanghai Jiao Tong University Affiliated Sixth People’s Hospital South Campus & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Shu-Yu Zhang
- Shanghai Jiao Tong University Affiliated Sixth People’s Hospital South Campus & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs & School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
- School of Chemistry & Environmental Engineering, International Healthcare Innovation Institute, Wuyi University, Jiangmen, 529020, P. R. China
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25
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Alkayar ZTI, Coldham I. Cascade cyclization and intramolecular nitrone dipolar cycloaddition and formal synthesis of 19-hydroxyibogamine. Org Biomol Chem 2019; 17:66-73. [PMID: 30539955 DOI: 10.1039/c8ob02839g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A cascade or domino sequence of condensation of hydroxylamine and an aldehyde to give an oxime, cyclization to a nitrone, and intramolecular 1,3-dipolar cycloaddition has been successfully employed where there is branching at C-4 as a route to the iboga alkaloids. Cyclization occurs with displacement of chloride as a leaving group and intramolecular cycloaddition occurs with an alkene as a dipolarophile. The reaction gives an azabicyclo[2.2.2]octane product containing a fused isoxazolidine as a single stereoisomer and this was converted to an isoquinuclidine that completed a formal synthesis of the alkaloid (±)-19-hydroxyibogamine.
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Affiliation(s)
- Ziad T I Alkayar
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK.
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26
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Seong S, Lim H, Han S. Biosynthetically Inspired Transformation of Iboga to Monomeric Post-iboga Alkaloids. Chem 2019. [DOI: 10.1016/j.chempr.2018.10.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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27
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Takayama H, Kitajima M, Nakano S, Kogure N, Subhadhirasakul S. New Indole Alkaloids from Ervatamia cumingiana. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)11] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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28
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Liu C, Sun Z, Xie F, Liang G, Yang L, Li Y, Cheng M, Lin B, Liu Y. Gold(i)-catalyzed pathway-switchable tandem cycloisomerizations to indolizino[8,7-b]indole and indolo[2,3-a]quinolizine derivatives. Chem Commun (Camb) 2019; 55:14418-14421. [DOI: 10.1039/c9cc05667j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A common strategy was developed to access both indolizino[8,7-b]indole and indolo[2,3-a]quinolizine derivatives from tryptamine-N-ethynylpropiolamide substrates in a switchable fashion via tuning both the electronic effects and steric effects.
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Affiliation(s)
- Chengjun Liu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- P. R. China
- Wuya College of Innovation
| | - Zenghui Sun
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- P. R. China
- Wuya College of Innovation
| | - Fukai Xie
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- P. R. China
- Wuya College of Innovation
| | - Guoduan Liang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- P. R. China
- Wuya College of Innovation
| | - Lu Yang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- P. R. China
- Institute of Drug Research in Medicine Capital of China
| | - Yaqiao Li
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- P. R. China
- Institute of Drug Research in Medicine Capital of China
| | - Bin Lin
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- P. R. China
- Institute of Drug Research in Medicine Capital of China
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- P. R. China
- Wuya College of Innovation
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29
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Zhang J, Ao YL, Yao N, Bai WX, Fan CL, Ye WC, Zhang XQ. Three New Monoterpenoid Indole Alkaloids from Ervatamia pandacaqui. Chem Biodivers 2018; 15:e1800268. [PMID: 30133137 DOI: 10.1002/cbdv.201800268] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/20/2018] [Indexed: 11/09/2022]
Abstract
Three new monoterpenoid indole alkaloids, ervapandine A (1), (3R)-hydroxyibogaine (3), 12-hydroxyakuammicine N(4)-oxide (6), along with four known ones, were isolated from the twigs and leaves of Ervatamia pandacaqui. The structures of the new alkaloids were elucidated by spectroscopic methods and sugar hydrolysis experiment. All of the compounds were evaluated for their cytotoxicity against three human cell lines. Compound 7 showed moderate cytotoxic activity.
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Affiliation(s)
- Jian Zhang
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Engineering Research Center for Modernization of TCM, College of Pharmacy, Jinan University, Guangzhou, 510632, P. R. China
| | - Yun-Lin Ao
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Engineering Research Center for Modernization of TCM, College of Pharmacy, Jinan University, Guangzhou, 510632, P. R. China
| | - Nan Yao
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Engineering Research Center for Modernization of TCM, College of Pharmacy, Jinan University, Guangzhou, 510632, P. R. China
| | - Wen-Xin Bai
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Engineering Research Center for Modernization of TCM, College of Pharmacy, Jinan University, Guangzhou, 510632, P. R. China
| | - Chun-Lin Fan
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Engineering Research Center for Modernization of TCM, College of Pharmacy, Jinan University, Guangzhou, 510632, P. R. China
| | - Wen-Cai Ye
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Engineering Research Center for Modernization of TCM, College of Pharmacy, Jinan University, Guangzhou, 510632, P. R. China
| | - Xiao-Qi Zhang
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Engineering Research Center for Modernization of TCM, College of Pharmacy, Jinan University, Guangzhou, 510632, P. R. China
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30
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Dai J, Dan W, Schneider U, Wang J. β-Carboline alkaloid monomers and dimers: Occurrence, structural diversity, and biological activities. Eur J Med Chem 2018; 157:622-656. [DOI: 10.1016/j.ejmech.2018.08.027] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 06/26/2018] [Accepted: 08/10/2018] [Indexed: 01/21/2023]
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31
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Serdaroglu G, Uludag N. Concise total synthesis of (±)-aspidospermidine and computational study: FT-IR, NMR, NBO, NLO, FMO, MEP diagrams. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.04.050] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Liu B, Liu SJ, Zhan R, Huang GL, Tian XJ, Chen YG. Cytotoxic Bisindole Alkaloids from Tabernaemontana bovina. Chem Nat Compd 2018. [DOI: 10.1007/s10600-018-2486-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Li F, Zhang Z, Zhang G, Che Q, Zhu T, Gu Q, Li D. Determination of Taichunamide H and Structural Revision of Taichunamide A. Org Lett 2018; 20:1138-1141. [PMID: 29400467 DOI: 10.1021/acs.orglett.8b00061] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new indole alkaloid, named taichunamide H (1), was obtained from cultures of the fungus Aspergillus versicolor. With observation of a carbon resonance with a chemical shift of 190.4 ppm, generally thought to be a carbonyl, the structure of 1 was initially proposed to be a diastereomer of taichunamide A that contains a unique spiro-azetidine moiety. Further analysis of compound 1 using X-ray diffraction showed that the spiro-azetidine moiety should be revised as a fused-imine-containing pyrrole ring, with the resonance at 190.4 ppm assigned as an imine carbon. Accordingly, the structure of taichunamide A was also revised.
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Affiliation(s)
- Feng Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, P. R. China
| | - Zhenzhen Zhang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, P. R. China
| | - Guojian Zhang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, P. R. China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology , Qingdao, 266237, P. R. China
| | - Qian Che
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, P. R. China
| | - Tianjiao Zhu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, P. R. China
| | - Qianqun Gu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, P. R. China
| | - Dehai Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, P. R. China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology , Qingdao, 266237, P. R. China
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Lavaud C, Massiot G. The Iboga Alkaloids. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2017; 105:89-136. [PMID: 28194562 DOI: 10.1007/978-3-319-49712-9_2] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Iboga alkaloids are a particular class of indolomonoterpenes most often characterized by an isoquinuclidine nucleus. Their first occurrence was detected in the roots of Tabernanthe iboga, a sacred plant to the people of Gabon, which made it cult object. Ibogaine is the main representative of this class of alkaloids and its psychoactive properties are well documented. It has been proposed as a drug cessation treatment and has a wide range of activities in targeting opioids, cocaine, and alcohol. The purpose of this chapter is to provide a background on this molecule and related compounds and to update knowledge on the most recent advances made. Difficulties linked to the status of ibogaine as a drug in several countries have hampered its development, but 18-methoxycoronaridine is currently under evaluation for the same purposes and for the treatment of leishmaniasis. The chapter is divided into six parts: an introduction aiming at defining what is called an iboga alkaloid, and this is followed by current knowledge on their biosynthesis, which unfortunately remains a "black box" as far as the key construction step is concerned. Many of these alkaloids are still being discovered and the third and fourth parts of the chapter discuss the analytical tools in use for this purpose and give lists of new monomeric and dimeric alkaloids belonging to this class. When necessary, the structures are discussed especially with regard to absolute configuration determinations, which remain a point of weakness in their assignments. Part V gives an account of progress made in the synthesis, partial and total, which the authors believe is key to providing solid solutions to the industrial development of the most promising molecules. The last part of the chapter is devoted to the biological properties of iboga alkaloids, with particular emphasis on ibogaine and 18-methoxycoronaridine.
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Affiliation(s)
- Catherine Lavaud
- Faculty of Pharmacy, Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims, UMR CNRS 7312, Case postale 44, UFR des Sciences Exactes et Naturelles, BP 1039, 51687, Reims, Cedex 2, France.
| | - Georges Massiot
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims, UMR CNRS 7312, Case postale 44, UFR des Sciences Exactes et Naturelles, BP 1039, 51687, Reims, Cedex 2, France
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Nge CE, Sim KS, Lim SH, Thomas NF, Low YY, Kam TS. A Hexacyclic, Iboga-Derived Monoterpenoid Indole with a Contracted Tetrahydroazepine C-Ring and Incorporation of an Isoxazolidine Moiety, a Seco-Corynanthean, an Aspidosperma-Aspidosperma Bisindole with Anticancer Properties, and the Absolute Configuration of the Pyridopyrimidine Indole Alkaloid, Vernavosine. JOURNAL OF NATURAL PRODUCTS 2016; 79:2709-2717. [PMID: 27759387 DOI: 10.1021/acs.jnatprod.6b00674] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Examination of the EtOH extract of the Malayan Tabernaemontana corymbosa resulted in the isolation of three new alkaloids, viz., cononuridine (1), an unusual hexacyclic, iboga-derived, monoterpenoid indole characterized by contraction of the tetrahydroazepine C-ring and incorporation of an additional isoxazolidine ring, taberisidine (2), a seco-corynanthean alkaloid, and conofolidine (3), an Aspidosperma-Aspidosperma bisindole that showed pronounced in vitro growth inhibitory activity against an array of human cancer cell lines, including KB, vincristine-resistant KB, PC-3, LNCaP, MCF7, MDA-MB-231, HT-29, and HCT 116 cells. The structures and absolute configurations of 1 and 3 and the absolute configuration of the novel pyridopyrimidine indole alkaloid vernavosine (4) were confirmed by X-ray diffraction analysis. A reasonable biosynthesis route to cononuridine starting from an iboga precursor is presented.
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Affiliation(s)
- Choy-Eng Nge
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Kae-Shin Sim
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Siew-Huah Lim
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Noel F Thomas
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Yun-Yee Low
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Toh-Seok Kam
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
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Henry KG, Blair LM, Sperry J, Colby Davie EA. 4,4′-Bismoschamine: biomimetic synthesis and evidence to support structural equivalency to montamine. Org Biomol Chem 2016; 14:8838-8847. [DOI: 10.1039/c6ob01685e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A biomimetic synthesis of 4,4′-bismoschamine enabled comparison of its NMR data to dimeric tryptamines, which supports structural equivalency to montamine.
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Affiliation(s)
| | - Lachlan M. Blair
- School of Chemical Sciences
- University of Auckland
- Auckland
- New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences
- University of Auckland
- Auckland
- New Zealand
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