1
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Zhu XX, Fan YY, Zheng CY, Yang HY, Gao K, Yue JM. Alstolarsines A-E, Indoline Alkaloids with Two Different Carbon Skeletons from Alstonia scholaris. JOURNAL OF NATURAL PRODUCTS 2025; 88:815-820. [PMID: 40085025 DOI: 10.1021/acs.jnatprod.5c00027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/16/2025]
Abstract
Five complex indoline alkaloids, alstolarsines A-E (1-5) possessing two unprecedented carbon skeletons of 6/5/5/7/6/6(5) fused polycyclic systems, were isolated from Alstonia scholaris. Their structures were characterized using various methods including spectroscopic data, ECD spectra, and single-crystal X-ray diffraction. The inhibitory activities of alstolarsines A-D (1-4) on DRAK2 phosphorylation and ATP-citrate lyase were evaluated, but all of them were inactive.
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Affiliation(s)
- Xu-Xin Zhu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yao-Yue Fan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China
| | - Cheng-Yu Zheng
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China
| | - Hong-Ying Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Kun Gao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Jian-Min Yue
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China
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2
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Das S. Visible-Light-Induced Dearomative Annulation of Indoles toward Stereoselective Formation of Fused- and Spiro Indolines. ACS OMEGA 2024; 9:36023-36042. [PMID: 39220487 PMCID: PMC11360027 DOI: 10.1021/acsomega.4c02848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 05/24/2024] [Accepted: 05/29/2024] [Indexed: 09/04/2024]
Abstract
Dearomatization approaches are attractive for their abilities to transform simple, planar arenes into complex, three-dimensional architectures. In particular, visible-light driven dearomatization strategies are significant because of their mild, green, and sustainable nature, enabling the fabrication of new chemical bonds via an electron transfer or energy transfer process. Indole compounds, being potentially bioactive and readily accessible, can be employed efficiently as building blocks for constructing diverse annulated frameworks under photocatalysis. Highly stereoselective radical cascade reactions of appropriate indole systems can provide complex cyclic scaffolds bearing multiple stereocenters. In fact, the past few years have witnessed the renaissance of dearomative cycloadditions of indoles via visible-light-induced photocatalysis. The present review highlights recent advances (2019-mid 2024) in visible-light-driven dearomative annulation of indoles leading to formation of polycyclic indolines, including angularly fused and spiro indolines. Most of the reactions described in this review are simple, providing quick access to the desired products. Additionally, characteristic reaction mechanisms are offered to provide an understand of how indole scaffolds show distinctive reactivity under photocatalytic conditions.
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Affiliation(s)
- Suven Das
- Department of Chemistry, Rishi Bankim Chandra College for Women, Naihati, North 24 Parganas, West Bengal 743165, India
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3
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Zhou PJ, Huang T, Ma GL, Zhao ZY, Jiang ZL, Zang Y, Xiong J, Li J, Hu JF. Structurally diverse terpenoids and their DRAK2 inhibitory activities: A follow-up study on the vulnerable conifer Pseudotsuga forrestii. J Mol Struct 2024; 1305:137754. [DOI: 10.1016/j.molstruc.2024.137754] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2025]
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4
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Wu PQ, Liu ZD, Ren YH, Zhou JS, Liu QF, Wu Y, Zhang JL, Zhou B, Yue JM. Monoterpenoid indole alkaloids from Alstonia scholaris and their Toxoplasma gondii inhibitory activity. PHYTOCHEMISTRY 2024; 220:113993. [PMID: 38266954 DOI: 10.1016/j.phytochem.2024.113993] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/26/2024]
Abstract
Nine previously unreported various types of monoterpenoid indole alkaloids, together with seven known analogues were isolated from the stem barks of Alstonia scholaris through a silica gel free methodology. The structures of 1-9 were elucidated by spectroscopic data analysis, electronic circular dichroism calculations, and single-crystal X-ray diffraction. Compound 1 is a modified echitamine-type alkaloid with a novel 6/5/5/7/6/6 hetero hexacyclic bridged ring system, and 8 and 9 exist as a zwitterion and trifluoroacetate salt, respectively. The anti-Toxoplasma activity of all isolates on infected Vero cells were evaluated, which revealed that compound 14 at 0.24 μM displayed potent activity. This study expanded the structural diversity of alkaloids of A. scholaris, and presented their potential application in anti-Toxoplasma drug development.
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Affiliation(s)
- Pei-Qian Wu
- 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
| | - Zhen-Di Liu
- Health Science Center, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang, 315211, People's Republic of China
| | - Yu-Hao Ren
- 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
| | - Jun-Su Zhou
- 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
| | - Yan Wu
- 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
| | - Ji-Li Zhang
- Health Science Center, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang, 315211, People's Republic of China
| | - Bin Zhou
- 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; Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, Shandong, 264117, People's Republic of China.
| | - 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; Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, Shandong, 264117, People's Republic of China.
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5
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Zhan G, Zhang F, Yang K, Yang T, Zhou R, Chen W, Zhang J, Zhang X, Guo Z. Alscholarines A and B, two rearranged monoterpene indole alkaloids from Alstonia scholaris. Org Biomol Chem 2023; 21:8190-8196. [PMID: 37788053 DOI: 10.1039/d3ob01424j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Alscholarines A and B (1 and 2), two unprecedented rearranged monoterpene indole alkaloids, were isolated from Alstonia scholaris. Alscholarine A (1) features an imidazole ring fused with a rearranged vallesamine-type alkaloid possessing an unparalleled 6/5/6/6 tetracyclic skeleton through an unprecedented C7-C-19 connectivity. Alscholarine B (2), incorporating an unusual 7-oxa-1-azabicyclo[3.2.1]octane moiety, represents a unique rearranged vallesamine-type alkaloid with a 6/5/6/6/5 ring system via an unprecedented C-6-C-20 connectivity. Their structures were established by spectroscopic analysis, X-ray crystallography, and quantum-chemical calculations. Their plausible biosynthetic pathways were proposed. The vasorelaxant and anti-inflammatory activities of them were also evaluated. Compounds 1-3 showed moderate vasorelaxant activities.
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Affiliation(s)
- Guanqun Zhan
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P.R. China.
| | - Fuxin Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P.R. China.
| | - Kailing Yang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P.R. China.
| | - Tao Yang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P.R. China.
| | - Ruixi Zhou
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P.R. China.
| | - Wenwen Chen
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P.R. China.
| | - Jingwei Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P.R. China.
| | - Xinxin Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P.R. China.
| | - Zengjun Guo
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, P.R. China.
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6
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Djurkovic F, Ferjancic Z, Bihelovic F. Intramolecular Dearomative Inverse-Electron-Demand Diels Alder Strategy for the Total Synthesis of (+)-Alstonlarsine A. J Org Chem 2023; 88:11618-11626. [PMID: 37556165 DOI: 10.1021/acs.joc.3c00923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
An evolution of a synthetic route leading to a successful enantioselective total synthesis of monoterpenoid indole alkaloid (+)-alstonlarsine A is represented. The unique 9-azatricyclo[4.3.1.03,8]decane core was assembled through an efficient domino sequence comprising enamine formation in situ, followed by intramolecular dearomative inverse-electron-demand Diels Alder reaction. The preparation of the tricyclic dihydrocyclohepta[b]indole key intermediate via the intramolecular Horner-Wadsworth-Emmons reaction required a development of a new general method for the introduction of the phosphonoacetate moiety into the indole C-2 position, through copper-carbenoid insertion. The modular nature of the represented synthetic approach makes it suitable for the synthesis of analogues with different substituents' patterns.
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Affiliation(s)
- Filip Djurkovic
- University of Belgrade─Faculty of Chemistry, Studentski trg 16, POB 51, Belgrade 11158, Serbia
| | - Zorana Ferjancic
- University of Belgrade─Faculty of Chemistry, Studentski trg 16, POB 51, Belgrade 11158, Serbia
| | - Filip Bihelovic
- University of Belgrade─Faculty of Chemistry, Studentski trg 16, POB 51, Belgrade 11158, Serbia
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7
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Zhang F, Yang K, Liu H, Yang T, Zhou R, Zhang X, Zhan G, Guo Z. Structurally diverse monoterpene indole alkaloids with vasorelaxant activities from the branches of Alstonia scholaris. PHYTOCHEMISTRY 2023; 209:113610. [PMID: 36791874 DOI: 10.1016/j.phytochem.2023.113610] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Seven undescribed monoterpene indole alkaloids alstoscholarinines A‒G, along with nineteen known alkaloids, were isolated from the branches of Alstonia scholaris (L.) R. Br. The isolated alkaloids were classified into ten framework types. The structures of the undescribed alkaloids were elucidated by extensive spectroscopic analysis, ECD calculation, and single-crystal X-ray diffraction analysis. Alstoscholarinine A is an unreported and unusual monoterpene indole alkaloid incorporating three nitrogen atoms, characterized by a compact 6/5/6/6/6/5 hexacyclic system bearing a piperidine ring and a unique oxazolidine ring. Alstoscholarinine B represents the first naturally C-17 nor-isositsirikine-type alkaloid. Plausible biosynthetic pathways of alstoscholarinines A and B were proposed. All isolates were evaluated for their vasorelaxant activities against phenylephrine-induced contraction of rat mesenteric arteries. Among them, seven alkaloids showed significant vasorelaxant activities with EC50 values less than 10 μM. Importantly, the akuammicine-type alkaloids in this study showed much better vasorelaxant activities than other framework type alkaloids, indicating that this type of alkaloid may be a valuable source for the discovery of vasodilators. A preliminary structure-activity relationship for vasorelaxant activities of the isolated akuammicine-type alkaloids is also discussed.
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Affiliation(s)
- Fuxin Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, PR China
| | - Kailing Yang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, PR China
| | - Huanhuan Liu
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, PR China
| | - Tao Yang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, PR China
| | - Ruixi Zhou
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, PR China
| | - Xinxin Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, PR China
| | - Guanqun Zhan
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, PR China.
| | - Zengjun Guo
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, PR China.
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8
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Zhao MX, Cai J, Yang Y, Xu J, Liu WY, Akihisa T, Li W, Kikuchi T, Feng F, Zhang J. Traditional uses, chemical composition and pharmacological activities of Alstonia R. Br. (Apocynaceae): A review. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
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9
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Zhang L, Luo B, Lu Y, Chen Y. Targeting Death-Associated Protein Kinases for Treatment of Human Diseases: Recent Advances and Future Directions. J Med Chem 2023; 66:1112-1136. [PMID: 36645394 DOI: 10.1021/acs.jmedchem.2c01606] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The death-associated protein kinase (DAPK) family is a member of the calcium/calmodulin-regulated serine/threonine protein kinase family, and studies have shown that its role, as its name suggests, is mainly to regulate cell death. The DAPK family comprises five members, including DAPK1, DAPK2, DAPK3, DRAK1 and DRAK2, which show high homology in the common N-terminal kinase domain but differ in the extra-catalytic domain. Notably, previous research has suggested that the DAPK family plays an essential role in both the development and regulation of human diseases. However, only a few small-molecule inhibitors have been reported. In this Perspective, we mainly discuss the structure, biological function, and role of DAPKs in diseases and the currently discovered small-molecule inhibitors, providing valuable information for the development of the DAPK field.
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Affiliation(s)
- Lan Zhang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
| | - Boqin Luo
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
| | - Yingying Lu
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
| | - Yi Chen
- State Key Laboratory of Biotherapy and Cancer Center and Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
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10
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Barnes GL, Hong AY, Vanderwal CD. A Synthesis of Alstonlarsine A via Alstolucines B and F Demonstrates the Chemical Feasibility of a Proposed Biogenesis. Angew Chem Int Ed Engl 2023; 62:e202215098. [PMID: 36448226 PMCID: PMC9852003 DOI: 10.1002/anie.202215098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/23/2022] [Accepted: 11/29/2022] [Indexed: 12/05/2022]
Abstract
We offer a new biogenetic proposal for the origin of the complex alkaloid alstonlarsine A, through rearrangement of the Strychnos alkaloids alstolucines B and F. Further, we provide evidence of the chemical feasibility of this proposal in the facile conversion of synthetic alstolucines into alstonlarsine A through a short, efficient sequence of N-methylation, β-elimination, and a cascade 1,7-hydride shift/Mannich cyclization. We believe that this is the first biogenetic proposal involving the "tert-amino effect", a hydride-shift-based internal redox trigger of a Mannich cyclization. A further interesting feature of the cascade is that its stereochemical outcome most likely originates in conformational preferences during the hydride shift.
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Affiliation(s)
- Griffin L Barnes
- 1102 Natural Sciences II, Department of Chemistry, University of California, Irvine, CA92697-2025, USA
| | - Allen Y Hong
- 1102 Natural Sciences II, Department of Chemistry, University of California, Irvine, CA92697-2025, USA
| | - Christopher D Vanderwal
- 1102 Natural Sciences II, Department of Chemistry, University of California, Irvine, CA92697-2025, USA
- Department of Pharmaceutical Sciences, 101 Theory, University of California, Irvine, CA-92697, USA
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11
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Zheng Y, Li X, Kuang L, Wang Y. New insights into the characteristics of DRAK2 and its role in apoptosis: From molecular mechanisms to clinically applied potential. Front Pharmacol 2022; 13:1014508. [PMID: 36386181 PMCID: PMC9649744 DOI: 10.3389/fphar.2022.1014508] [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: 08/09/2022] [Accepted: 10/12/2022] [Indexed: 11/27/2022] Open
Abstract
As a member of the death-associated protein kinase (DAPK) family, DAP kinase-associated apoptosis-inducing kinase 2 (DRAK2) performs apoptosis-related functions. Compelling evidence suggests that DRAK2 is involved in regulating the activation of T lymphocytes as well as pancreatic β-cell apoptosis in type I diabetes. In addition, DRAK2 has been shown to be involved in the development of related tumor and non-tumor diseases through a variety of mechanisms, including exacerbation of alcoholic fatty liver disease (NAFLD) through SRSF6-associated RNA selective splicing mechanism, regulation of chronic lymphocytic leukemia and acute myeloid leukemia, and progression of colorectal cancer. This review focuses on the structure, function, and upstream pathways of DRAK2 and discusses the potential and challenges associated with the clinical application of DRAK2-based small-molecule inhibitors, with the aim of advancing DRAK2 research.
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Affiliation(s)
| | | | | | - Yong Wang
- Department of General Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
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12
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Ferjancic Z, Kukuruzar A, Bihelovic F. Total Synthesis of (+)‐Alstonlarsine A. Angew Chem Int Ed Engl 2022; 61:e202210297. [DOI: 10.1002/anie.202210297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Indexed: 12/31/2022]
Affiliation(s)
- Zorana Ferjancic
- University of Belgrade— Faculty of Chemistry Studentski trg 16, POB 51 11158 Belgrade 118 Serbia
| | - Andrej Kukuruzar
- University of Belgrade— Faculty of Chemistry Studentski trg 16, POB 51 11158 Belgrade 118 Serbia
| | - Filip Bihelovic
- University of Belgrade— Faculty of Chemistry Studentski trg 16, POB 51 11158 Belgrade 118 Serbia
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13
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Li Y, Zhang L, Wang W, Liu Y, Sun D, Li H, Chen L. A review on natural products with cage-like structure. Bioorg Chem 2022; 128:106106. [PMID: 36037599 DOI: 10.1016/j.bioorg.2022.106106] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/27/2022] [Accepted: 08/17/2022] [Indexed: 11/02/2022]
Abstract
Natural products with diverse structures and significant biological activities are essential sources of drug lead compounds, and play an important role in the research and development of innovative drugs. Cage-like compounds have various structures and are widely distributed in nature, especially caged xanthones isolated from Garcinia genus, paeoniflorin and its derivatives isolated from Paeonia lactiflora Pall, tetrodotoxin (TTX) and its derivatives, and so on. In recent years, the development and utilization of cage-like compounds have been a research hotspot in chemistry, biology and other fields due to their special structures and remarkable biological activities. In this review, we mainly summarized the cage-like compounds with various structures found and isolated from natural drugs since 1956, summarized its broad biological activities, and introduced the progress in the biosynthesis of some compounds, so as to provide a reference for the discovery of more novel compounds, and the development and application of innovative drugs.
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Affiliation(s)
- Yutong Li
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Linlin Zhang
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Wang Wang
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yang Liu
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Dejuan Sun
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Hua Li
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, China.
| | - Lixia Chen
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China.
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14
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Ferjancic Z, Kukuruzar A, Bihelovic F. Total Synthesis of (+)‐Alstonlarsine A. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210297] [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)
- Zorana Ferjancic
- Univerzitet u Beogradu Hemijski fakultet Faculty of Chemistry 11158 Belgrade SERBIA
| | - Andrej Kukuruzar
- Univerzitet u Beogradu Hemijski fakultet Faculty of Chemistry 11158 Belgrade SERBIA
| | - Filip Bihelovic
- University of Belgrade Faculty of Chemistry Studentski trg 12-16 11158 Belgrade SERBIA
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15
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Yao JJ, Ding R, Chen X, Zhai H. Asymmetric Total Synthesis of (+)-Alstonlarsine A. J Am Chem Soc 2022; 144:14396-14402. [PMID: 35894835 DOI: 10.1021/jacs.2c06518] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The first asymmetric total synthesis of (+)-alstonlarsine A has been realized. The prominent features of the current synthesis include the following: (i) a Pd/self-adaptable ligand complex-catalyzed asymmetric allylic alkylation of 2-methyl-2-cyclopentenyl carbonate with 2-indolylsubstituted dimethyl malonate to establish the key stereocenter of C15, (ii) an intramolecular nitrile oxide-alkene [3 + 2] cycloaddition (INOC [3 + 2]) to construct the cyclohepta[b]indole backbone with the installment of the requisite stereochemistry of the all-carbon quaternary center of C20, and (iii) a late-stage interrupted Pictet-Spengler reaction (IPSR) to rapidly assemble the core structure of (+)-alstonlarsine A.
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Affiliation(s)
- Jun-Jun Yao
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Rui Ding
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Xiaoming Chen
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China.,The State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Hongbin Zhai
- The State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China.,Shenzhen Bay Laboratory, Shenzhen 518055, China.,Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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16
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Zhang F, Liu H, Yang K, Yang T, Zhou R, Miao R, Zhan G, Guo Z. New phenylpropanoids and monoterpene alkaloids with vasorelaxant activities from the branches of Alstonia scholaris. Fitoterapia 2022; 158:105143. [DOI: 10.1016/j.fitote.2022.105143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/29/2022] [Accepted: 01/31/2022] [Indexed: 11/04/2022]
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17
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Wang ZW, Zhang JP, Wei QH, Chen L, Lin YL, Wang YL, An T, Wang XJ. Rupestrisine A and B, two novel dimeric indole alkaloids from Alstonia rupestris. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Affiliation(s)
- Jan Gierok
- Fakultät für Chemie und Chemische Biologie Technische Universität Dortmund 44227 Dortmund Germany
| | - Lars Benedix
- Fakultät für Chemie und Chemische Biologie Technische Universität Dortmund 44227 Dortmund Germany
| | - Martin Hiersemann
- Fakultät für Chemie und Chemische Biologie Technische Universität Dortmund 44227 Dortmund Germany
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19
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Zhou B, Gao XH, Zhang MM, Zheng CY, Liu HC, Yue JM. Discovery of four modified classes of triterpenoids delineated a metabolic cascade: compound characterization and biomimetic synthesis. Chem Sci 2021; 12:9831-9838. [PMID: 34349957 PMCID: PMC8293979 DOI: 10.1039/d1sc02710g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 06/18/2021] [Indexed: 02/05/2023] Open
Abstract
Chemical studies on Dichapetalum gelonioides have afforded 18 highly modified complex triterpenoids belonging to four compound classes as defined by the newly adapted functional motifs associated with the A ring of the molecules. Their structures were determined by solid data acquired by diverse methods. The biosynthetic pathway for the four compound classes was rationalized via cascade modifications involving diverse chemical events. The subsequent biomimetic syntheses afforded all the desired products, including compounds 16 and 19 that were not obtained in our purification, which validated the proposed biosynthetic pathway. Besides, some compounds exhibited strong cytotoxic activities, especially 2 and 4 showed nanomolar potency against the NAMALWA tumor cell line, and a gross structure–activity relationship (SAR) of these compounds against the tested tumor cell lines was delineated. Characterization of four classes of highly modified triterpenoids from Dichapetalum gelonioides sheds light on an unprecedented biosynthetic cascade, which was validated by the subsequent biomimetic syntheses. Moreover, some isolates exhibited nanomolar cytotoxic activities.![]()
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Affiliation(s)
- Bin Zhou
- 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
| | - 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
| | - Min-Min Zhang
- Division of Anti-tumor Pharmacology, 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
| | - Cheng-Yu Zheng
- 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
| | - Hong-Chun Liu
- Division of Anti-tumor Pharmacology, 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
| | - 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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20
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Fu C, Kelley SP, Tu J, Harmata M. Generation of the 7-Azabicyclo[4.3.1]decane Ring System via (4 + 3) Cycloaddition of Oxidopyridinium Ions. J Org Chem 2021; 86:7028-7037. [PMID: 33947183 DOI: 10.1021/acs.joc.1c00032] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Oxidopyridinium ions bearing an ester group at the 5-position undergo (4 + 3) cycloaddition reaction to afford congeners of 7-azabicyclo[4.3.1]decane. The reaction generally proceeds in high yield, although an excess of diene is often required to achieve such yields. The reaction is highly regioselective, but not endo/exo selective. It appears the cycloaddition process can be either kinetically or thermodynamically controlled, depending on the nature of the diene used and the reaction time. An intramolecular Heck reaction was used to demonstrate that some chemistry is possible with the cycloadducts.
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Affiliation(s)
- Chencheng Fu
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States
| | - Steven P Kelley
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States
| | - Jianzhuo Tu
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States
| | - Michael Harmata
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States
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21
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Mu X, Li Y, Zheng N, Long J, Chen S, Liu B, Zhao C, Yang Z. Stereoselective Synthesis of Cyclohepta[
b
]indoles by Visible‐Light‐Induced [2+2]‐Cycloaddition/retro‐Mannich‐type Reactions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xin‐Peng Mu
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Yuan‐He Li
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS) Peking-Tsinghua Center for Life Sciences Peking University Beijing 100871 P. R. China
| | - Nan Zheng
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Jian‐Yu Long
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Si‐Jia Chen
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Bing‐Yan Liu
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Chun‐Bo Zhao
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Zhen Yang
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS) Peking-Tsinghua Center for Life Sciences Peking University Beijing 100871 P. R. China
- Shenzhen Bay Laboratory Shenzhen 518055 P. R. China
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22
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Mu XP, Li YH, Zheng N, Long JY, Chen SJ, Liu BY, Zhao CB, Yang Z. Stereoselective Synthesis of Cyclohepta[b]indoles by Visible-Light-Induced [2+2]-Cycloaddition/retro-Mannich-type Reactions. Angew Chem Int Ed Engl 2021; 60:11211-11216. [PMID: 33683807 DOI: 10.1002/anie.202101104] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 02/27/2021] [Indexed: 12/12/2022]
Abstract
A novel method for the concise synthesis of cyclohepta[b]indoles in high yields was developed. The method involves a visible-light-induced, photocatalyzed [2+2]-cycloaddition/ retro-Mannich-type reaction of enaminones. Experimental and computational studies suggested that the reaction is a photoredox process initiated by single-electron oxidation of an enaminone moiety, which undergoes subsequent cyclobutane formation and rapidly fragmentation in a radical-cation state to form cyclohepta[b]indoles.
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Affiliation(s)
- Xin-Peng Mu
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Yuan-He Li
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, P. R. China
| | - Nan Zheng
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Jian-Yu Long
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Si-Jia Chen
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Bing-Yan Liu
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Chun-Bo Zhao
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Zhen Yang
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China.,Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, P. R. China.,Shenzhen Bay Laboratory, Shenzhen, 518055, P. R. China
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23
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Hou X, Li JY, Zhao M, Dai C, Li Y, Liu Y. Synthesis, Characterization, and DRAK2 Inhibitory Activities of Hydroxyaurone Derivatives. HETEROCYCLES 2021. [DOI: 10.3987/com-21-14481] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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24
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Liu YF, Yu SS. Survey of natural products reported by Asian research groups in 2019. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2020; 22:1101-1120. [PMID: 33207951 DOI: 10.1080/10286020.2020.1844675] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/22/2020] [Accepted: 10/28/2020] [Indexed: 06/11/2023]
Abstract
The new natural products reported in 2019 in peer-reviewed articles in journals with good reputations were reviewed and analyzed. The advances made by Asian research groups in the field of natural products chemistry in 2019 were summarized. Compounds with unique structural features and/or promising bioactivities originating from Asian natural sources were discussed based on their structural classification.
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Affiliation(s)
- Yan-Fei Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Shi-Shan Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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25
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Tymann DC, Benedix L, Iovkova L, Pallach R, Henke S, Tymann D, Hiersemann M. Photochemical Approach to the Cyclohepta[b]indole Scaffold by Annulative Two-Carbon Ring-Expansion. Chemistry 2020; 26:11974-11978. [PMID: 32463529 PMCID: PMC7540574 DOI: 10.1002/chem.202002581] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Indexed: 12/12/2022]
Abstract
We report on the implementation of the concept of a photochemically elicited two-carbon homologation of a π-donor-π-acceptor substituted chromophore by triple-bond insertion. Implementing a phenyl connector between the slide-in module and the chromophore enabled the synthesis of cylohepta[b]indole-type building blocks by a metal-free annulative one-pot two-carbon ring expansion of the five-membered chromophore. Post-irradiative structural elaboration provided founding members of the indolo[2,3-d]tropone family of compounds. Control experiments in combination with computational chemistry on this multibond reorganization process founded the basis for a mechanistic hypothesis.
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Affiliation(s)
| | - Lars Benedix
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
| | - Lyuba Iovkova
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
| | - Roman Pallach
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
| | - Sebastian Henke
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
| | - David Tymann
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
| | - Martin Hiersemann
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
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26
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Yeap JSY, Tan CH, Yong KT, Lim KH, Lim SH, Low YY, Kam TS. Macroline, talpinine, and sarpagine alkaloids from Alstonia penangiana. An NMR-based method for differentiating between A. penangiana and A. macrophylla. PHYTOCHEMISTRY 2020; 176:112391. [PMID: 32387883 DOI: 10.1016/j.phytochem.2020.112391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/13/2020] [Accepted: 04/15/2020] [Indexed: 06/11/2023]
Abstract
Fourteen previously undescribed alkaloids comprising two N-1-hydroxymethylmacroline alkaloids, one talpinine-type oxindole acetal, a pair of equilibrating talpinine-type oxindole hemiacetals, eight oxidized derivatives of sarpagine- and akuammiline-type indole alkaloids, in addition to alstochalotine a diastereomer of gelsochalotine recently isolated from Gelsemium elegans, were isolated from the leaf and stem-bark extracts of Alstonia penangiana. The structures and relative configurations of these alkaloids were established using NMR, MS, and in one instance, confirmed by X-ray diffraction analysis. An NMR-based method is described as a useful chemotaxonomic tool for differentiating between A. penangiana and A. macrophylla. Several of the alkaloids isolated showed appreciable growth inhibitory effects when tested against a number of human cancer cell lines.
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Affiliation(s)
- Joanne Soon-Yee Yeap
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Chun-Hoe Tan
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kien-Thai Yong
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kuan-Hon Lim
- School of Pharmacy, University of Nottingham Malaysia Campus, Jalan Broga, 43500, Semenyih, Selangor, Malaysia
| | - Siew-Huah Lim
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Yun-Yee Low
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Toh-Seok Kam
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
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27
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Scholarinine A, a N3 type caged-monoterpene indole alkaloid as Cav3.1 T-type calcium channel inhibitor from Alstonia scholaris. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Zhang J, Song M, Ao YL, Li Y, Zou XY, Xu J, Wang Y, Zhang DM, Zhang XQ, Ye WC. Alstolarines A and B, two unusual monoterpenoid indole alkaloids with an acetal moiety from Alstonia scholaris. Org Chem Front 2020. [DOI: 10.1039/d0qo00751j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Two novel monoterpenoid indole alkaloids, alstolarines A and B (1 and 2), were isolated from Alstonia scholaris, and exhibited promising vasorelaxant activities.
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29
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Yeap JSY, Saad HM, Tan CH, Sim KS, Lim SH, Low YY, Kam TS. Macroline-Sarpagine Bisindole Alkaloids with Antiproliferative Activity from Alstonia penangiana. JOURNAL OF NATURAL PRODUCTS 2019; 82:3121-3132. [PMID: 31642315 DOI: 10.1021/acs.jnatprod.9b00712] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A methanol extract of the stem bark of the Malayan Alstonia penangiana provided seven new bisindole alkaloids, comprising six macroline-sarpagine alkaloids (angustilongines E-K, 1-6) and one macroline-pleiocarpamine bisindole alkaloid (angustilongine L, 7). Analysis of the spectroscopic data (NMR and MS) of these compounds led to the proposed structures of these alkaloids. The macroline-sarpagine alkaloids (1-6) showed in vitro growth inhibitory activity against a panel of human cancer cell lines, inclusive of KB, vincristine-resistant KB, PC-3, LNCaP, MCF7, MDA-MB-231, HT-29, HCT 116, and A549 cells (IC50 values: 0.02-9.0 μM).
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Affiliation(s)
- Joanne Soon-Yee Yeap
- Department of Chemistry, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Hazwani Mat Saad
- Institute of Biological Sciences, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Chun-Hoe Tan
- Institute of Biological Sciences, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Kae-Shin Sim
- Institute of Biological Sciences, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Siew-Huah Lim
- Department of Chemistry, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Yun-Yee Low
- Department of Chemistry, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Toh-Seok Kam
- Department of Chemistry, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
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30
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Zhang J, Liu ZW, Ao YL, Hu LJ, Wei CJ, Zhang QH, Yuan MF, Wang Y, Zhang QW, Ye WC, Zhang XQ. Hunterines A-C, Three Unusual Monoterpenoid Indole Alkaloids from Hunteria zeylanica. J Org Chem 2019; 84:14892-14897. [PMID: 31475536 DOI: 10.1021/acs.joc.9b01835] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Three new monoterpenoid indole alkaloids (MIAs), hunterines A-C (1-3), were isolated from Hunteria zeylanica. Compound 1 possesses a unique skeleton with an unprecedented azabicyclo[4.3.1]decane ring system. Compounds 2 and 3 are a pair of epimeric vobasinylindole alkaloid heterodimers. Their structures including absolute configurations were established by spectroscopic analyses, X-ray diffraction, computational calculation, and the modified Mosher's method. Plausible biogenetic pathways of 1-3 were also proposed. Alkaloid 1 showed moderate cytotoxic activity against the HepG2 cell line.
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Affiliation(s)
- Jian Zhang
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , P.R. China.,State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences , University of Macau , Macao SAR , P.R. China
| | - Zhi-Wen Liu
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , P.R. China
| | - Yun-Lin Ao
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , P.R. China
| | - Li-Jun Hu
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , P.R. China
| | - Cui-Jie Wei
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , P.R. China
| | - Qing-Hua Zhang
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , P.R. China
| | - Meng-Fei Yuan
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , P.R. China
| | - Ying Wang
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , P.R. China
| | - Qing-Wen Zhang
- State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences , University of Macau , Macao SAR , P.R. China
| | - Wen-Cai Ye
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , P.R. China
| | - Xiao-Qi Zhang
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , P.R. China
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31
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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: 4.2] [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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32
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Yu Y, Bao MF, Wu J, Chen J, Yang YR, Schinnerl J, Cai XH. Tabernabovines A–C: Three Monoterpenoid Indole Alkaloids from the Leaves of Tabernaemontana bovina. Org Lett 2019; 21:5938-5942. [PMID: 31294995 DOI: 10.1021/acs.orglett.9b02060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mei-Fen Bao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Wu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Rong Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, China
| | - Johann Schinnerl
- Chemodiversity Research Group, Division of Systematic and Evolutionary Botany, University of Vienna, Rennweg 14, A-1030 Vienna, Austria
| | - Xiang-Hai Cai
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, China
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33
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Yu C, Li X, Zhou Y. A Condensation/Reductive Alkylation/Hydrogenation Cascade for Facile Synthesis of Chiral 2,3‐Disubstituted Indolines. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900289] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chang‐Bin Yu
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Xiang Li
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Yong‐Gui Zhou
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- Collaborative Innovation Centre of Chemical Science and Engineering Tianjin 300071 P. R. China
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34
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Abstract
A personal selection of 32 recent papers is presented covering various aspects of current developments in bioorganic chemistry and novel natural products such as niduterpenoid A from Aspergillus nidulans.
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