1
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Wang C, Lin J, Huang H, Ye C, Bao H. Regio- and Diastereoselective Radical Dimerization Reactions for the Construction of Benzo[ f]isoindole Dimers. Org Lett 2024; 26:2580-2584. [PMID: 38526484 DOI: 10.1021/acs.orglett.4c00587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
This study presents a novel approach for synthesizing benzo[f]isoindole dimers, which involves cascade cyclization and oxidative radical dimerization. Our method allows for the formation of up to five carbon-carbon bonds in a single reaction, exhibiting remarkable diastereoselectivity and regioselectivity. The mechanism and regioselectivity were investigated through a combination of experiments and calculations.
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Affiliation(s)
- Chuanchuan Wang
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. of China
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
- Fujian College, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Jingyi Lin
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. of China
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
- Fujian College, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Haiyang Huang
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Changqing Ye
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Hongli Bao
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
- Fujian College, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. of China
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2
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Shi FZ, Fang YD, Fan M, Jiang XJ, Wang S, Wei GZ. Cytotoxic depsidones and xanthones from Garcinia esculenta Y. H. Li. Fitoterapia 2024; 172:105779. [PMID: 38104910 DOI: 10.1016/j.fitote.2023.105779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/23/2023] [Accepted: 12/12/2023] [Indexed: 12/19/2023]
Abstract
Six new compounds, including two depsidones garciculendepsidones A and B (1 and 2), one prenylated xanthone garciculenxanthone (3) and three dimeric xanthones bigarciculenxanthones A-C (4-6), were isolated from the twigs and leaves of Garcinia esculenta Y. H. Li. Their structures were elucidated based on comprehensive analyses of spectral data, including HRESIMS, 1D and 2D NMR, and ECD calculation. All the isolates were tested for their cytotoxicity against five human cancer cell lines (myeloid leukemia HL-60, lung cancer A-549 cells, hepatocellular carcinoma SMMC-7721, breast cancer MDA-MB-231 and colon cancer SW480), among them, compounds 3-5 displayed cytotoxic potential, especially garciculenxanthone (3) had the lowest IC50 value of 8.2 μm for lung cancer A-549 cells.
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Affiliation(s)
- Feng-Zhi Shi
- College of Pharmacy, Dili University, Dali 671000, People's Republic of China
| | - Yin-Dong Fang
- BioBioPha Co., Ltd., Kunming 650201, People's Republic of China; Reference Substance Branch, National Engineering Research Center for Modernization of Traditional Chinese Medicine, Kunming 650201, People's Republic of China
| | - Min Fan
- College of Pharmacy, Dili University, Dali 671000, People's Republic of China
| | - Xian-Jun Jiang
- BioBioPha Co., Ltd., Kunming 650201, People's Republic of China; Reference Substance Branch, National Engineering Research Center for Modernization of Traditional Chinese Medicine, Kunming 650201, People's Republic of China
| | - Shuang Wang
- College of Pharmacy, Dili University, Dali 671000, People's Republic of China.
| | - Guo-Zhu Wei
- BioBioPha Co., Ltd., Kunming 650201, People's Republic of China; Reference Substance Branch, National Engineering Research Center for Modernization of Traditional Chinese Medicine, Kunming 650201, People's Republic of China.
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3
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Phang YL, Liu S, Zheng C, Xu H. Recent advances in the synthesis of natural products containing the phloroglucinol motif. Nat Prod Rep 2022; 39:1766-1802. [PMID: 35762867 DOI: 10.1039/d1np00077b] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Covering: June 2009 to 2021Natural products containing a phloroglucinol motif include simple and oligomeric phloroglucinols, polycyclic polyprenylated acylphloroglucinols, phloroglucinol-terpenes, xanthones, flavonoids, and coumarins. These compounds represent a major class of secondary metabolites which exhibit a wide range of biological activities such as antimicrobial, anti-inflammatory, antioxidant and hypoglycaemic properties. A number of these compounds have been authorized for therapeutic use or are currently being studied in clinical trials. Their structural diversity and utility in both traditional and conventional medicine have made them popular synthetic targets over the years. In this review, we compile and summarise the recent synthetic approaches to the natural products bearing a phloroglucinol motif. Focus has been given on ingenious strategies to functionalize the phloroglucinol moiety at multiple positions. The isolation and bioactivities of the compounds are also provided.
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Affiliation(s)
- Yee Lin Phang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China. .,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Song Liu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China. .,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Changwu Zheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China. .,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Hongxi Xu
- Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
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4
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Wang LL, Yu Q, Zhang W, Yang S, Peng L, Zhang L, Li XN, Gagosz F, Kirschning A. Asymmetric Total Synthesis of Antibiotic Elansolid A. J Am Chem Soc 2022; 144:6871-6881. [PMID: 35410472 DOI: 10.1021/jacs.2c01133] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Elansolid A is a structurally complex polyketide macrolactone natural product that exhibits promising antibacterial properties. Its challenging asymmetric total synthesis was achieved by a convergent strategy, in which the tetrahydroindane core of the molecule and an eastern vinyl iodide moiety were combined as the main fragments. The central tetrahydroindane motif was constructed with high stereoselectivity by a bioinspired intramolecular Diels-Alder cycloaddition, generating four stereogenic centers in a single step. The stereocontrol of this key step could be achieved by virtue of a 1,3-allylic strain generated by the temporary introduction of a steric-directing iodine substituent on the substrate. The formation of the macrolactone motif that completes the synthesis was achieved via two different retrosynthetic disconnections, namely, a Suzuki-Miyaura cross-coupling or an alternative Mukaiyama esterification reaction.
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Affiliation(s)
- Liang-Liang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Qi Yu
- School of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, PR China
| | - Wenjing Zhang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan Province 450001, PR China
| | - Shuai Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Lin Peng
- School of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, PR China
| | - Liang Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China
| | - Fabien Gagosz
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, K1N 6N5 Ottawa, Canada
| | - Andreas Kirschning
- Institute of Organic Chemistry, Leibniz Universität Hannover, Schneiderberg 1B, 30167 Hannover, Germany
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5
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Wong HNC, Peng XS, Zhong Z, Lyu MY, Ma HR. Pivotal Reactions in the Creation of the Polycyclic Skeleton of Cryptotrione. Synlett 2021. [DOI: 10.1055/a-1472-4594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
AbstractThree pivotal reactions, namely, enyne cycloisomerization, polyene cyclization, and quinone methide formation, are applied to synthesize the complex polycyclic skeleton of cryptotrione. This review summarizes the most prominent applications of these three reactions to the total syntheses of natural products, covering results published in the literature between 2011 and 2020.1 Introduction2 Three Pivotal Reactions Applied to Create the Polycyclic Framework of Cryptotrione2.1 Enyne Cycloisomerization2.2 Polyene Cyclization2.3 Quinone Methide Formation3 Conclusion
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Affiliation(s)
- Henry N. C. Wong
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen)
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong
| | - Xiao-Shui Peng
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen)
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong
| | - Zhuliang Zhong
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong
| | - Mao-Yun Lyu
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong
| | - Hao-Ran Ma
- School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen)
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6
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Schuppe AW, Liu Y, Newhouse TR. An invocation for computational evaluation of isomerization transforms: cationic skeletal reorganizations as a case study. Nat Prod Rep 2021; 38:510-527. [PMID: 32931541 PMCID: PMC7956923 DOI: 10.1039/d0np00005a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Covering: 2010 to 2020This review article describes how cationic rearrangement reactions have been used in natural product total synthesis over the last decade as a case study for the many productive ways by which isomerization reactions are enabling for synthesis. This review argues that isomerization reactions in particular are well suited for computational evaluation, as relatively simple calculations can provide significant insight.
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Affiliation(s)
- Alexander W Schuppe
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06511-8107, USA.
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7
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Chen K, Xie T, Shen Y, He H, Zhao X, Gao S. Calixanthomycin A: Asymmetric Total Synthesis and Structural Determination. Org Lett 2021; 23:1769-1774. [DOI: 10.1021/acs.orglett.1c00193] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Kuanwei Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Tao Xie
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Yanfang Shen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Haibing He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Xiaoli Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
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8
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Sun J, Yang H, Tang W. Recent advances in total syntheses of complex dimeric natural products. Chem Soc Rev 2021; 50:2320-2336. [PMID: 33470268 DOI: 10.1039/d0cs00220h] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Dimeric natural products are a collection of molecules with diverse molecular architectures and significant bio-activities. In this tutorial review, total synthesis of complex dimeric natural products accomplished in recent years are summarized and various dimerization strategies are discussed. By highlighting the selected representative examples, this review aims to demonstrate the recent tactics of dimerization which is an important process integrated into the whole synthetic sequences of dimeric natural products, provide insights on structural and chemical properties of monomers and dimers of related natural products, and promote further technological advances in organic synthesis and biological studies of complex dimeric natural products.
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Affiliation(s)
- Jiawei Sun
- State Key Laboratory of Bio-Organic & Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
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9
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Xie T, Zheng C, Chen K, He H, Gao S. Asymmetric Total Synthesis of the Complex Polycyclic Xanthone FD‐594. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915787] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tao Xie
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Chaoying Zheng
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Kuanwei Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Haibing He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug DevelopmentEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug DevelopmentEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
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10
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Eitzinger A, Mayer RJ, Hampel N, Mayer P, Waser M, Ofial AR. Electrophilic Reactivities of Vinyl p-Quinone Methides. Org Lett 2020; 22:2182-2186. [PMID: 32118449 PMCID: PMC7091536 DOI: 10.1021/acs.orglett.0c00338] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
![]()
The
electrophilic reactivity of a series of 8-arylated vinyl p-quinone methides (pVQMs) was determined by analyzing
the kinetics of their reactions with carbanions in DMSO at 20 °C
according to the linear free energy relationship log k = sN(N + E). The electrophilicity
parameters E for pVQMs were used
to successfully predict Michael-additions with structurally diverse
C-, N-, S-, and H-nucleophiles.
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Affiliation(s)
- Andreas Eitzinger
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenberger Straße 69, 4040 Linz, Austria
| | - Robert J Mayer
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
| | - Nathalie Hampel
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
| | - Peter Mayer
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
| | - Mario Waser
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenberger Straße 69, 4040 Linz, Austria
| | - Armin R Ofial
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377 München, Germany
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11
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Xie T, Zheng C, Chen K, He H, Gao S. Asymmetric Total Synthesis of the Complex Polycyclic Xanthone FD‐594. Angew Chem Int Ed Engl 2020; 59:4360-4364. [DOI: 10.1002/anie.201915787] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/12/2020] [Indexed: 01/01/2023]
Affiliation(s)
- Tao Xie
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Chaoying Zheng
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Kuanwei Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Haibing He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug DevelopmentEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical, ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug DevelopmentEast China Normal University 3663 North Zhongshan Road Shanghai 200062 China
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12
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Shi L, Wang S, Huo L, Gao M, Zhang W, Lu X, Qiu S, Liu H, Tan H. Diastereoselective construction of the benzannulated spiroketal core of chaetoquadrins enabled by a regiodivergent cascade. Org Chem Front 2020. [DOI: 10.1039/d0qo00484g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A remarkable acid-mediated methodology for the regiodivergent construction of a biologically interesting tricyclic benzannulated-spiroketal skeleton with diastereomeric specificity was uncovered to efficiently access analogs of chaetoquadrins .
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Affiliation(s)
- Lili Shi
- Program for Natural Products Chemical Biology
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization
- Guangdong Provincial Key Laboratory of Applied Botany
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Sasa Wang
- School of Chemical Biology and Biotechnology
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
| | - Luqiong Huo
- Program for Natural Products Chemical Biology
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization
- Guangdong Provincial Key Laboratory of Applied Botany
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Minli Gao
- Program for Natural Products Chemical Biology
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization
- Guangdong Provincial Key Laboratory of Applied Botany
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Wenge Zhang
- Program for Natural Products Chemical Biology
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization
- Guangdong Provincial Key Laboratory of Applied Botany
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Xiuxiang Lu
- Program for Natural Products Chemical Biology
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization
- Guangdong Provincial Key Laboratory of Applied Botany
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Shengxiang Qiu
- Program for Natural Products Chemical Biology
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization
- Guangdong Provincial Key Laboratory of Applied Botany
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Hongxin Liu
- Program for Natural Products Chemical Biology
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization
- Guangdong Provincial Key Laboratory of Applied Botany
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Haibo Tan
- Program for Natural Products Chemical Biology
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization
- Guangdong Provincial Key Laboratory of Applied Botany
- South China Botanical Garden
- Chinese Academy of Sciences
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13
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Resende DISP, Durães F, Maia M, Sousa E, Pinto MMM. Recent advances in the synthesis of xanthones and azaxanthones. Org Chem Front 2020. [DOI: 10.1039/d0qo00659a] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A useful chemical toolbox for (aza)xanthones from 2012 to 2020 that covers the optimization of known procedures and novel methodologies.
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Affiliation(s)
- Diana I. S. P. Resende
- CIIMAR – Centro Interdisciplinar de Investigação Marinha e Ambiental
- Terminal de Cruzeiros do Porto de Leixões
- 4450-208 Matosinhos
- Portugal
- Laboratório de Química Orgânica e Farmacêutica
| | - Fernando Durães
- CIIMAR – Centro Interdisciplinar de Investigação Marinha e Ambiental
- Terminal de Cruzeiros do Porto de Leixões
- 4450-208 Matosinhos
- Portugal
- Laboratório de Química Orgânica e Farmacêutica
| | - Miguel Maia
- CIIMAR – Centro Interdisciplinar de Investigação Marinha e Ambiental
- Terminal de Cruzeiros do Porto de Leixões
- 4450-208 Matosinhos
- Portugal
- Laboratório de Química Orgânica e Farmacêutica
| | - Emília Sousa
- CIIMAR – Centro Interdisciplinar de Investigação Marinha e Ambiental
- Terminal de Cruzeiros do Porto de Leixões
- 4450-208 Matosinhos
- Portugal
- Laboratório de Química Orgânica e Farmacêutica
| | - Madalena M. M. Pinto
- CIIMAR – Centro Interdisciplinar de Investigação Marinha e Ambiental
- Terminal de Cruzeiros do Porto de Leixões
- 4450-208 Matosinhos
- Portugal
- Laboratório de Química Orgânica e Farmacêutica
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14
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Doyon TJ, Perkins JC, Baker Dockrey SA, Romero EO, Skinner KC, Zimmerman PM, Narayan ARH. Chemoenzymatic o-Quinone Methide Formation. J Am Chem Soc 2019; 141:20269-20277. [PMID: 31840992 DOI: 10.1021/jacs.9b10474] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Generation of reactive intermediates and interception of these fleeting species under physiological conditions is a common strategy employed by Nature to build molecular complexity. However, selective formation of these species under mild conditions using classical synthetic techniques is an outstanding challenge. Here, we demonstrate the utility of biocatalysis in generating o-quinone methide intermediates with precise chemoselectivity under mild, aqueous conditions. Specifically, α-ketoglutarate-dependent non-heme iron enzymes, CitB and ClaD, are employed to selectively modify benzylic C-H bonds of o-cresol substrates. In this transformation, biocatalytic hydroxylation of a benzylic C-H bond affords a benzylic alcohol product which, under the aqueous reaction conditions, is in equilibrium with the corresponding o-quinone methide. o-Quinone methide interception by a nucleophile or a dienophile allows for one-pot conversion of benzylic C-H bonds into C-C, C-N, C-O, and C-S bonds in chemoenzymatic cascades on preparative scale. The chemoselectivity and mild nature of this platform is showcased here by the selective modification of peptides and chemoenzymatic synthesis of the chroman natural product (-)-xyloketal D.
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15
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Purgett TJ, Dyer MW, Bickel B, McNeely J, Porco JA. Gold(I)-Mediated Cycloisomerization/Cycloaddition Enables Bioinspired Syntheses of Neonectrolides B-E and Analogues. J Am Chem Soc 2019; 141:15135-15144. [PMID: 31469554 DOI: 10.1021/jacs.9b06355] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Development of a synthetic route to the oxaphenalenone (OP) natural products neonectrolides B-E is described. The synthesis relies on gold-catalyzed 6-endo-dig hydroarylation of an unusual enynol substrate as well as a one-pot Rieche formylation/cyclization/deprotection sequence to efficiently construct the tricyclic oxaphenalenone framework in the form of a masked ortho-quinone methide (o-QM). A tandem cycloisomerization/[4 + 2] cycloaddition strategy was employed to quickly construct molecules resembling the neonectrolides. The tricyclic OP natural product SF226 could be converted to corymbiferan lactone E and a related masked o-QM. Our study culminates with the application of the tandem reaction sequence to syntheses of neonectrolides B-E as well as previously unreported exo-diastereomers.
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Affiliation(s)
- Thomas J Purgett
- Department of Chemistry, Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
| | - Matthew W Dyer
- Department of Chemistry, Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
| | - Bryce Bickel
- Department of Chemistry, Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
| | - James McNeely
- Department of Chemistry, Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
| | - John A Porco
- Department of Chemistry, Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
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16
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Assoah B, Riihonen V, Vale JR, Valkonen A, Candeias NR. Synthesis of 6,12-Disubstituted Methanodibenzo[b,f][1,5]dioxocins: Pyrrolidine Catalyzed Self-Condensation of 2′-Hydroxyacetophenones. Molecules 2019; 24:molecules24132405. [PMID: 31261870 PMCID: PMC6651863 DOI: 10.3390/molecules24132405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 06/26/2019] [Accepted: 06/28/2019] [Indexed: 11/17/2022] Open
Abstract
The preparation of unprecedented 6,12-disubstituted methanodibenzo[b,f][1,5]dioxocins from pyrrolidine catalyzed self-condensation of 2′-hydroxyacetophenones is herein described. This method provides easy access to this highly bridged complex core, resulting in construction of two C–O and two C–C bonds, a methylene bridge and two quaternary centers in a single step. The intricate methanodibenzo[b,f][1,5]dioxocin compounds were obtained in up to moderate yields after optimization of the reaction conditions concerning solvent, reaction times and the use of additives. Several halide substituted methanodibenzo[b,f][1,5]dioxocins could be prepared from correspondent 2′-hydroxyacetophenones.
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Affiliation(s)
- Benedicta Assoah
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland.
| | - Vesa Riihonen
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland
| | - João R Vale
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Arto Valkonen
- Department of Chemistry, University of Jyvaskyla, P.O. Box 35, 40014 Jyväskylä, Finland
| | - Nuno R Candeias
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland.
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17
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Loesche A, Brückner R. Dienolates of Cycloalkenones and α,β‐Unsaturated Esters Form Diels–Alder Adducts by a Michael/Michael‐Tandem Reaction Rather Than in One Step. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ann‐Christine Loesche
- Institut für Organische Chemie Albert‐Ludwigs‐Universität Albertstraße 21 79104 Freiburg Germany
| | - Reinhard Brückner
- Institut für Organische Chemie Albert‐Ludwigs‐Universität Albertstraße 21 79104 Freiburg Germany
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18
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Smith MJ, Reichl KD, Escobar RA, Heavey TJ, Coker DF, Schaus SE, Porco JA. Asymmetric Synthesis of Griffipavixanthone Employing a Chiral Phosphoric Acid-Catalyzed Cycloaddition. J Am Chem Soc 2018; 141:148-153. [PMID: 30566336 DOI: 10.1021/jacs.8b12520] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Asymmetric synthesis of the biologically active xanthone dimer griffipavixanthone is reported along with its absolute stereochemistry determination. Synthesis of the natural product is accomplished via dimerization of a p-quinone methide using a chiral phosphoric acid catalyst to afford a protected precursor in excellent diastereo- and enantioselectivity. Mechanistic studies, including an unbiased computational investigation of chiral ion-pairs using parallel tempering, were performed in order to probe the mode of asymmetric induction.
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Affiliation(s)
- Michael J Smith
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
| | - Kyle D Reichl
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
| | - Randolph A Escobar
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
| | - Thomas J Heavey
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
| | - David F Coker
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
| | - Scott E Schaus
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
| | - John A Porco
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
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19
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Abstract
A 10-step synthesis of the C25 steroid natural product cyclocitrinol from inexpensive, commercially available pregnenolone is reported. This synthesis features a biomimetic cascade rearrangement to efficiently construct the challenging bicyclo[4.4.1] A/B ring system, which enabled a gram-scale synthesis of the bicyclo[4.4.1] enone intermediate 18 in only nine steps. This work also provides experimental support for the biosynthetic origin of cyclocitrinol.
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Affiliation(s)
- Yu Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Wei Ju
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Hailong Tian
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Weisheng Tian
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Jinghan Gui
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
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20
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Abstract
The synthesis of kibdelone C, a polycyclic natural xanthone isolated from a soil actinomycete, was achieved through a convergent approach. A 6π-electrocyclization was applied to construct the highly substituted dihydrophenanthrenol fragment (B-C-D ring). InBr3-promoted lactonization was employed to build the isocoumarin ring, which served as a common precursor for the formation of isoquinolinone ring (A-B ring). A key DMAP-mediated oxa-Michael/aldol cascade reaction was developed to install the tetrahydroxanthone fragment (E-F ring). This approach provides a new solution to prepare its derivatives and structurally related natural products.
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Affiliation(s)
- Yihua Dai
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes , School of Chemistry and Molecular Engineering, East China Normal University , Shanghai 200062 , China
| | - Feixia Ma
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes , School of Chemistry and Molecular Engineering, East China Normal University , Shanghai 200062 , China
| | - Yanfang Shen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes , School of Chemistry and Molecular Engineering, East China Normal University , Shanghai 200062 , China
| | - Tao Xie
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes , School of Chemistry and Molecular Engineering, East China Normal University , Shanghai 200062 , China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes , School of Chemistry and Molecular Engineering, East China Normal University , Shanghai 200062 , China.,Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development , East China Normal University , Shanghai 200062 , China
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21
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Xing JJ, Gao YN, Shi M. Phosphine-Initiated Cascade Annulation of β′-Acetoxy Allenoate and p
-Quinols: Access to Ring Fused Hexahydroindeno Furan Derivatives. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800319] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiao-Jiao Xing
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 People's Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 354 Fenglin Lu Shanghai 200032 People's Republic of China
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22
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Liu H, Wang Y, Guo X, Huo L, Xu Z, Zhang W, Qiu S, Yang B, Tan H. A Bioinspired Cascade Sequence Enables Facile Assembly of Methanodibenzo[b,f][1,5]dioxocin Flavonoid Scaffold. Org Lett 2018; 20:546-549. [DOI: 10.1021/acs.orglett.7b03630] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hongxin Liu
- Program
for Natural Products Chemical Biology, Key Laboratory of Plant Resources
Conservation and Sustainable Utilization, Guangdong Provincial Key
Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
- State
Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial
Key Laboratory of Microbial Culture Collection and Application, Guangdong
Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China
| | - Yu Wang
- Program
for Natural Products Chemical Biology, Key Laboratory of Plant Resources
Conservation and Sustainable Utilization, Guangdong Provincial Key
Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Xueying Guo
- Program
for Natural Products Chemical Biology, Key Laboratory of Plant Resources
Conservation and Sustainable Utilization, Guangdong Provincial Key
Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Luqiong Huo
- Program
for Natural Products Chemical Biology, Key Laboratory of Plant Resources
Conservation and Sustainable Utilization, Guangdong Provincial Key
Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Zhifang Xu
- Program
for Natural Products Chemical Biology, Key Laboratory of Plant Resources
Conservation and Sustainable Utilization, Guangdong Provincial Key
Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Weimin Zhang
- State
Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial
Key Laboratory of Microbial Culture Collection and Application, Guangdong
Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China
| | - Shengxiang Qiu
- Program
for Natural Products Chemical Biology, Key Laboratory of Plant Resources
Conservation and Sustainable Utilization, Guangdong Provincial Key
Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Bao Yang
- Program
for Natural Products Chemical Biology, Key Laboratory of Plant Resources
Conservation and Sustainable Utilization, Guangdong Provincial Key
Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Haibo Tan
- Program
for Natural Products Chemical Biology, Key Laboratory of Plant Resources
Conservation and Sustainable Utilization, Guangdong Provincial Key
Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
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