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Luo EE, Liu SN, Wang ZJ, Chen LY, Liang CQ, Yu MY, Qin XJ. Oligomeric phloroglucinols with hAChE inhibitory and antibacterial activities from tropic Rhodomyrtus tomentosa. Bioorg Chem 2023; 141:106836. [PMID: 37774436 DOI: 10.1016/j.bioorg.2023.106836] [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: 06/30/2023] [Revised: 08/19/2023] [Accepted: 09/03/2023] [Indexed: 10/01/2023]
Abstract
Alzheimer's diseases (AD) and other infectious diseases caused by drug-resistance bacteria have posed a serious threat to human lives and global health. With the aim to search for human acetylcholinesterase (hAChE) inhibitors and antibacterial agents from medicinal plants, 16 phloroglucinol oligomers, including two new phloroglucinol monomers (1a and 1b), four new phloroglucinol dimers (3a, 3b, 4b, and 5a), six new phloroglucinol trimers (6a, 6b, 7a, 7b, 8a, and 8b), and two naturally occurring phloroglucinol monomers (2a and 2b), along with two known congeners (4a and 5b), were purified from the leaves of tropic Rhodomyrtus tomentosa. The structures and absolute configurations of these new isolates were unequivocally established by comprehensive analyses of their spectroscopic data (NMR and HRESIMS), ECD calculation, and single crystal X-ray diffraction. Structurally, 3a/3b shared a rare C-5' formyl group, whereas 6a/6b possessed a unique C-7' aromatic ring. In addition, 7a/7b and 8a/8b were rare phloroglucinol trimers with a bis-furan and a C-6' hemiketal group. Pharmacologically, the mixture of 3a and 3b showed the most potent human acetylcholinesterase (hAChE) inhibitory activity with an IC50 value of 1.21 ± 0.16 μM. The molecular docking studies of 3a and 3b in the hAChE binding sites were performed, displaying good agreement with the in vitro inhibitory effects. In addition, the mixture of 3a and 3b displayed the most significant anti-MRSA (methicillin-resistant Staphylococcus aureus) with MIC and MBC values of both 0.50 μg/mL, and scanning electron microscope (SEM) studies revealed that they could destroy the biofilm structures of MRSA. The findings provide potential candidates for the further development of anti-AD and anti-bacterial agents.
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Affiliation(s)
- E-E Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Si-Na Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Zhao-Jie Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming 650500, People's Republic of China
| | - Ling-Yun Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; College of Pharmacy, Guilin Medical University, Guilin 541199, People's Republic of China
| | - Cheng-Qin Liang
- College of Pharmacy, Guilin Medical University, Guilin 541199, People's Republic of China
| | - Mu-Yuan Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.
| | - Xu-Jie Qin
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
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2
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Liu Z, Gao H, Zhao Z, Huang M, Wang S, Zhan J. Status of research on natural protein tyrosine phosphatase 1B inhibitors as potential antidiabetic agents: Update. Biomed Pharmacother 2023; 157:113990. [PMID: 36459712 DOI: 10.1016/j.biopha.2022.113990] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/29/2022] [Accepted: 11/07/2022] [Indexed: 12/02/2022] Open
Abstract
Protein tyrosine phosphatase 1B (PTP1B) is a crucial therapeutic target for multiple human diseases comprising type 2 diabetes (T2DM) and obesity because it is a seminal part of a negative regulator in both insulin and leptin signaling pathways. PTP1B inhibitors increase insulin receptor sensitivity and have the ability to cure insulin resistance-related diseases. However, the few PTP1B inhibitors that entered the clinic (Ertiprotafib, ISIS-113715, Trodusquemine, and JTT-551) were discontinued due to side effects or low selectivity. Molecules with broad chemical diversity extracted from natural products have been reported to be potent PTP1B inhibitors with few side effects. This article summarizes the recent PTP1B inhibitors extracted from natural products, clarifying the current research progress, and providing new options for designing new and effective PTP1B inhibitors.
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Affiliation(s)
- Zhenyang Liu
- School of Life Science, Ludong University, Yantai, Shandong 264025, China
| | - Hongwei Gao
- School of Life Science, Ludong University, Yantai, Shandong 264025, China.
| | - Ziyu Zhao
- School of Life Science, Ludong University, Yantai, Shandong 264025, China
| | - Mengrui Huang
- School of Life Science, Ludong University, Yantai, Shandong 264025, China
| | - Shengnan Wang
- School of Life Science, Ludong University, Yantai, Shandong 264025, China
| | - Jiuyu Zhan
- School of Life Science, Ludong University, Yantai, Shandong 264025, China.
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Roy P, Krishna AV, Ramachary DB. Direct Organocatalytic Reductive Alkylation of Syncarpic Acid: Scope and Applications. J Org Chem 2022; 87:16026-16038. [PMID: 36367306 DOI: 10.1021/acs.joc.2c02164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Biologically important 4-alkylsyncarpic acids, which resemble the core structure of many natural products, were synthesized in one-pot through the organocatalytic three-component reductive alkylation with excellent yields and C-selectivity. Synthetic applications of 4-alkylsyncarpic acids were demonstrated by converting into the functionally rich molecules through different reactions like Michael, retro-Michael, reduction, and oxidation reactions. In a continuation, formal total synthesis of (±)-triumphalone, (±)-isotriumphalone, and monomeric phloroglucinol derivatives was reported in a few steps starting from 4-alkylsyncarpic acids in overall very good yields. Further showcasing the importance of C-alkylated products, 4-benzylsyncarpic acid and its Michael adduct with methyl vinyl ketone were synthesized in a gram scale without compromising rate/yields.
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Affiliation(s)
- Pritam Roy
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Anugam V Krishna
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
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Expanding the Knowledge Related to Flavors and Fragrances by Means of Three-Dimensional Preparative Gas Chromatography and Molecular Spectroscopy. SEPARATIONS 2022. [DOI: 10.3390/separations9080202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
As universally known, gas chromatography (GC) coupled with mass spectrometry (MS) allows us to acquire spectra that can be searched in specific databases to attain qualitative information on a peak of interest. When not present in databases, structure elucidation is required before including a new component in a library: from that moment, scientists all around the world will be able to identify the new molecule with analytical confidence after GC-MS analysis. Conversely, if data are not shared in commercial databases, even if a molecule is studied and elucidated, it appears to be unknown or only identifiable on the basis of third-party data taken from the literature, which is a serious limitation. The present paper deals with a case that confirms this assumption. A component of Myrtus communis L. volatile fraction was tentatively identified based on literature data. Despite this, reliable identification could not be achieved due to the lack of a corresponding spectrum in commercial MS databases. Afterwards, the target component was isolated in a reasonable quantity and with a high degree of purity for downstream characterization by spectroscopic techniques. For this purpose, preparative (prep) GC may appear insufficient for the isolation of volatile components from highly complex samples. In this study, a prep-MDGC system was implemented for the isolation of the compound of interest from myrtle oil, consisting of three wide-bore columns of different selectivity coupled by means of Deans switch transfer devices. Based on the NMR and GC-FTIR data acquired, the unknown compound was identified as 2,2,5,5,7,7-hexamethyl-3,7-dihydro-1-benzofuran-4,6(2H,5H)-dione. Noticeably, this is a known molecule, yet its mass spectrum had never been registered into MS databases and thus was not available to the scientific community. Finally, the spectrum was included for the first time in a commercial library, namely the FFNSC 5.0 MS database. The aim of the present study was to highlight the opportunity to make analytical data quickly available in a reliable way by registering them in searchable MS databases to improve the identification means for researchers all over the world.
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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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Dethe DH, Dherange BD, Das S, Srivastava A. Bioinspired enantioselective total syntheses of antibacterial callistrilones enabled by double S N2' cascade. Chem Commun (Camb) 2022; 58:5474-5477. [PMID: 35416218 DOI: 10.1039/d2cc01398c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bioinspired, catalytic approach to the enantioselective total syntheses of antibacterial callistrilones A, C-E and 13-epi-callistrilone E natural products containing an unprecedented, sterically compact [1]benzofuro-[2,3-a]xanthene 6/6/6/5/6/3-fused hexacyclic skeleton is described. The key features of the synthesis include a highly regio- and diastereoselective double SN2' cascade reaction, Lewis acid catalysed Michael addition and late stage diastereoselective epoxide formation from the sterically hindered β-face of the alkene as the key steps.
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Affiliation(s)
- Dattatraya H Dethe
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
| | - Balu D Dherange
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
| | - Saikat Das
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
| | - Aparna Srivastava
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
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Total syntheses of hyperaspidinols A and B enabled by a bioinspired diastereoselective cascade sequence. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.08.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Zheng A, Wang S, Zhou T, Chen Y, Ke X, Chen H, Tan H. Bioinspired syntheses of cryptoflavanones C and D, oboflavanones A and B, and cryptoyunnanones G and H enabled by an acid-triggered cascade sequence. Org Chem Front 2022. [DOI: 10.1039/d1qo01837j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Collective total syntheses of oboflavanones A-B, cryptoflavanones C-D, and cryptoyunnanones G-H via a bioinspired acid-triggered olefin isomerization/hemiacetalization/dehydration/formal [3 + 3]-type cycloaddition cascade process are presented.
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Affiliation(s)
- Anquan Zheng
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Key Laboratory of South China Agricultural Plant Molecular Analysis, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Sasa Wang
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China
| | - Tingting Zhou
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Key Laboratory of South China Agricultural Plant Molecular Analysis, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Yan Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Xin Ke
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Huiyu Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Haibo Tan
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Key Laboratory of South China Agricultural Plant Molecular Analysis, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
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9
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Zhou T, Zheng A, Huo L, Li C, Tan H, Wang S, Chen H. Total syntheses of ericifolione and its analogues via a biomimetic inverse-electron-demand Diels-Alder reaction. Chem Commun (Camb) 2021; 58:270-273. [PMID: 34878459 DOI: 10.1039/d1cc06361h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Driven by bioinspiration and appreciation of the structure of ericifolione, a biomimetic tautomerization/intermolecular inverse-electron-demand hetero Diels-Alder reaction cascade sequence promoted by sodium acetate to rapidly construct sterically hindered dihydropyran scaffolds was established, which allowed the first straightforward biomimetic total syntheses of ericifolione and its analogues with high simplicity. Moreover, this methodology set the stage for the preparation of relevant natural products or derivatives.
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Affiliation(s)
- Tingting Zhou
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China. .,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, People's Republic of China.
| | - Anquan Zheng
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China. .,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, People's Republic of China.
| | - Luqiong Huo
- 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, People's Republic of China.
| | - Changgeng Li
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China.
| | - Haibo Tan
- 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, People's Republic of China.
| | - Sasa Wang
- 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, People's Republic of China. .,Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Centre for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, People's Republic of China
| | - Huiyu Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China. .,School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, People's Republic of China
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Yu MY, Liu SN, Liu H, Meng QH, Qin XJ, Liu HY. Acylphloroglucinol trimers from Callistemon salignus seeds: Isolation, configurational assignment, hAChE inhibitory effects, and molecular docking studies. Bioorg Chem 2021; 117:105404. [PMID: 34749116 DOI: 10.1016/j.bioorg.2021.105404] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/28/2021] [Accepted: 10/02/2021] [Indexed: 12/12/2022]
Abstract
Alzheimer's disease (AD) diagnoses are greatly increasing in frequency as the global population ages, highlighting an urgent need for new anti-AD strategies. With the aim to search for human acetylcholinesterase (hAChE) inhibitors from the species of Myrtaceae family, ten acylphloroglucinol trimers (APTs), including eight new APTs, callistemontrimers A-H (1a, 1b, 2a, 2b, 3a, 3b, 4b, and 5b), and two naturally occurring ones (4a and 5a), along with one reported triketone-acylphloroglucinol-monoterpene adduct (6), were obtained and structurally characterized from the hAChE inhibitory acetone extract of Callistemon salignus seeds. The structures and their absolute configurations for new APTs were unequivocally established via the detailed interpretation of extensive spectroscopic data (HRESIMS and NMR), ECD calculations, and single crystal X-ray diffraction, whereas the absolute configurations of known APTs were determined by further chiral separation, and calculated ECD calculations. The results of hAChE inhibitory assay revealed that an enantiomeric mixture of 2a/2b, 2a, and 2b are good hAChE inhibitors with IC50 values of 1.22 ± 0.23, 2.28 ± 0.19, and 4.96 ± 0.39 μM, respectively. Molecular docking was used to uncover the modes of interactions for bioactive compounds with the active site of hAChE. In addition, 2 and 6 displayed moderate neurite outgrowth-promoting effects with differentiation rates of 6.16% and 6.19% at a concentration of 1.0 μM, respectively.
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Affiliation(s)
- Mu-Yuan Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Si-Na Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Hui Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Qing-Hong Meng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xu-Jie Qin
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
| | - Hai-Yang Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
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11
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Dong C, Peng W, Wang H, Zhang X, Zhang J, Tan G, Xu K, Zou Z, Tan H. Total syntheses of melodienones by redox isomerization of propargylic alcohols. Org Biomol Chem 2021; 19:5077-5081. [PMID: 34032260 DOI: 10.1039/d1ob00599e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A remarkable base-promoted methodology for the rapid construction of the (E)- and (Z)-γ-oxo-α,β-alkenoic ester skeletons from readily accessible vinyl propargylic alcohols through modified redox isomerization was uncovered. This approach manifested its high simplicity and efficiency with excellent tolerance of functional substituents, which led to the straightforward structural modifications of various natural products and efficient total syntheses of melodienone, homomelodienone, isomelodienone, and homoisomelodienone within 4 linear steps.
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Affiliation(s)
- Chunmao Dong
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China. and 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
| | - Weiwei Peng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China. and 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
| | - Huan 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 and National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Xiao 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, Guangzhou 510650, China
| | - Jun Zhang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Guishan Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
| | - Kangping Xu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
| | - Zhenxing Zou
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
| | - Haibo Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China. and National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China and 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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12
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Deng LM, Hu LJ, Bai YTZ, Wang J, Qin GQ, Song QY, Su JC, Huang XJ, Jiang RW, Tang W, Li YL, Li CC, Ye WC, Wang Y. Rhodomentosones A and B: Two Pairs of Enantiomeric Phloroglucinol Trimers from Rhodomyrtus tomentosa and Their Asymmetric Biomimetic Synthesis. Org Lett 2021; 23:4499-4504. [PMID: 34032453 DOI: 10.1021/acs.orglett.1c01616] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Rhodomentosones A and B (1 and 2), two pairs of novel enantiomeric phloroglucinol trimers featuring a unique 6/5/5/6/5/5/6-fused ring system were isolated from Rhodomyrtus tomentosa. Their structures with absolute configurations were elucidated by NMR spectroscopy, X-ray crystallography, and ECD calculation. The bioinspired syntheses of 1 and 2 were achieved in six steps featuring an organocatalytic asymmetric dehydroxylation/Michael addition/Kornblum-DeLaMare rearrangement/ketalization cascade reaction. Compounds 1 and 2 exhibited promising antiviral activities against respiratory syncytial virus (RSV).
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Affiliation(s)
- Lu-Ming Deng
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Li-Jun Hu
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Yang-Ting-Zhi Bai
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Jie Wang
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Guan-Qiu Qin
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Qiao-Yun Song
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Jun-Cheng Su
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Xiao-Jun Huang
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Ren-Wang Jiang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Wei Tang
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Yao-Lan Li
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Chuang-Chuang Li
- Department of Chemistry, Southern University of Science & Technology, Shenzhen 518055, People's Republic of China
| | - Wen-Cai Ye
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
| | - Ying Wang
- Center for Bioactive Natural Molecules and Innovative Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, People's Republic of China
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13
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Zhang X, Dong C, Wu G, Huo L, Yuan Y, Hu Y, Liu H, Tan H. The Biomimetic Total Syntheses of the Antiplasmodial Tomentosones A and B. Org Lett 2020; 22:8007-8011. [PMID: 33017154 DOI: 10.1021/acs.orglett.0c02943] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The first biomimetic total syntheses of natural phloroglucinols tomentosones A and B and their analogues have been accomplished. The synthetic strategy primarily referred to the potential biosynthetic precursors and their possible sequence of segments assembly by chemological evolution of the structural entities and enabled rapid access of the titled compounds in a practical fashion.
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Affiliation(s)
- Xiao Zhang
- 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, People's Republic of China.,Institute of Tropical Medicine, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, People's Republic of China
| | - Chunmao Dong
- 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, People's Republic of China.,Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, People's Republic of China
| | - Guiyun Wu
- 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, People's Republic of China.,Institute of Tropical Medicine, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, People's Republic of China
| | - Luqiong Huo
- 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, People's Republic of China.,Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, People's Republic of China
| | - Yunfei Yuan
- 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, People's Republic of China
| | - Yingjie Hu
- Institute of Tropical Medicine, Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, People's Republic of China
| | - Hongxin Liu
- 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, People's Republic of China.,Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, People's Republic of China
| | - Haibo Tan
- 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, People's Republic of China.,Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, People's Republic of China
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14
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Li Y, Hu YC, Ji DW, Zhang WS, He GC, Cong YF, Chen QA. Acid-catalyzed chemoselective C- and O- prenylation of cyclic 1,3-diketones. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(20)63575-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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15
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Zhang X, Wu G, Huo L, Guo X, Qiu S, Liu H, Tan H, Hu Y. The First Racemic Total Syntheses of the Antiplasmodials Watsonianones A and B and Corymbone B. JOURNAL OF NATURAL PRODUCTS 2020; 83:3-7. [PMID: 31721580 DOI: 10.1021/acs.jnatprod.8b01077] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The first biomimetic total syntheses of three biologically meaningful acylphloroglucinols, watsonianones A and B and corymbone B, with potent antiplasmodial activity, were performed. Their total syntheses were carried out through a diversity-oriented synthetic strategy from congener 2,2,4,4-tetramethyl-6-(3-methylbutylidene)cyclohexane-1,3,5-trione with high step efficiency. The spontaneous enolization/air oxidation of the precursor 2,2,4,4-tetramethyl-6-(3-methylbutylidene)cyclohexane-1,3,5-trione through a singlet O2-induced Diels-Alder reaction pathway to assemble the key biosynthetic peroxide intermediate is also discussed.
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Affiliation(s)
- Xiao Zhang
- Institute of Tropical Medicine , Guangzhou University of Chinese Medicine , Guangzhou 510405 , People's Republic of China
- 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 , People's Republic of China
| | - Guiyun Wu
- Institute of Tropical Medicine , Guangzhou University of Chinese Medicine , Guangzhou 510405 , People's Republic of China
- 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 , People's Republic of China
| | - Luqiong Huo
- 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 , People's Republic of China
| | - Xueying Guo
- 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 , People's Republic of China
| | - Shengxiang Qiu
- 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 , People's Republic of China
| | - Hongxin Liu
- 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 , People's Republic of China
| | - Haibo Tan
- 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 , People's Republic of China
| | - Yingjie Hu
- Institute of Tropical Medicine , Guangzhou University of Chinese Medicine , Guangzhou 510405 , People's Republic of China
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16
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Hou JQ, Yu JH, Zhao H, Dong YY, Peng QS, Zhang BB, Wang H. Biomimetic total syntheses of baefrutones A-D, baeckenon B, and frutescones A, D-F. Org Biomol Chem 2020; 18:1135-1139. [PMID: 31967630 DOI: 10.1039/c9ob02490e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biomimetic total syntheses of baefrutones A-D (1-4), baeckenon B (5), and frutescones A, D-F (6-9), isolated from the leaves of Baeckea frutescens, were achieved in 9, 8, and 5 steps, respectively, in moderate to good yields (72-83%). The synthetic routes feature the Michael addition, oxidative [4 + 2] cycloaddition, and water-promoted Diels-Alder click reactions as the key steps. This study helped gain thorough mechanistic insights into the biosynthetic origins and provided a facile approach for the construction of a library of natural tasmanone-based meroterpenoid analogues. Moreover, compounds 1-9 show potent inhibitory effects against S. paratyphi and/or C. albicans with MIC values of 3.125-25 μg mL-1, and they could be promising lead molecules for the design of new antibiotic agents.
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Affiliation(s)
- Ji-Qin Hou
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
| | - Jiang-Hong Yu
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
| | - Heng Zhao
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
| | - Ying-Ying Dong
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
| | - Qiu-Shi Peng
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
| | - Bao-Bao Zhang
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
| | - Hao Wang
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
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17
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Huo L, Dong C, Wang M, Lu X, Zhang W, Yang B, Yuan Y, Qiu S, Liu H, Tan H. Biomimetic Total Syntheses of Sanctis A–B with Structure Revision. Org Lett 2020; 22:934-938. [DOI: 10.1021/acs.orglett.9b04486] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Luqiong Huo
- 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, Guangdong Academy of Sciences, Guangzhou 510070, China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Chunmao Dong
- 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
| | - Miaomiao Wang
- 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
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Xiuxiang Lu
- 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
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Wenge Zhang
- 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
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Bao Yang
- 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
| | - Yunfei Yuan
- 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
| | - Shengxiang Qiu
- 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
| | - Hongxin Liu
- 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, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Haibo Tan
- 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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18
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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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19
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Liu F, Tian HY, Huang XL, Wang WJ, Li NP, He J, Ye WC, Wang L. Xanthchrysones A-C: Rearranged Phenylpropanoyl-Phloroglucinol Dimers with Unusual Skeletons from Xanthostemon chrysanthus. J Org Chem 2019; 84:15355-15361. [PMID: 31697081 DOI: 10.1021/acs.joc.9b02373] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Three pairs of dimeric phenylpropanoyl-phloroglucinol enantiomers, (+)- and (-)-xanthchrysones A-C [(+)- and (-)-1-3], as well as their postulated biosynthetic precursors, were isolated and identified from the leaves of Xanthostemon chrysanthus. Compound 1 featured an unprecedented bis-phenylpropanoyl-benzo[b]cyclopent[e] oxepine tricyclic backbone. Compounds 2 and 3 represent the first examples of 1-(cyclopentylmethyl)-3-(3-phenylpropanoyl)benzene scaffold. The structures and absolute configurations of 1-3 were determined by spectroscopic and X-ray diffraction analysis as well as electronic circular dichroism (ECD) calculation. Both (+)-2 and (-)-2 showed moderate antibacterial activities including several multidrug-resistant strains.
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20
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Borade BR, Nomula R, Gonnade RG, Kontham R. Fe(III)-Catalyzed Diastereoselective Friedel-Crafts Alkylation-Hemiketalization-Lactonization Cascade for the Synthesis of Polycyclic Bridged 2-Chromanol Lactones. Org Lett 2019; 21:2629-2633. [PMID: 30924674 DOI: 10.1021/acs.orglett.9b00614] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An unprecedented Fe(III)-catalyzed Friedel-Crafts alkylation-hemiketalization-lactonization cascade of electron-rich hydroxy arenes and distinctively functionalized unsaturated 4-keto esters is developed for the construction of polycyclic bridged 2-chromanol lactones. Following this simple and facile protocol, a broad range of products was prepared in good to excellent yields as a single diastereomer. An unusual conglomerate (enantiomerically pure polymorph) of 3ac is reported along with the absolute stereochemistry, and the remaining products were rigorously confirmed by single-crystal X-ray analysis and analogy.
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Affiliation(s)
- Balasaheb R Borade
- Academy of Scientific and Innovative Research (AcSIR) , Ghaziabad 201002 , India
| | | | - Rajesh G Gonnade
- Academy of Scientific and Innovative Research (AcSIR) , Ghaziabad 201002 , India
| | - Ravindar Kontham
- Academy of Scientific and Innovative Research (AcSIR) , Ghaziabad 201002 , India
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21
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Lv XJ, Zhao WW, Chen YH, Wan SB, Liu YK. Organocatalytic asymmetric synthesis of both cis- and trans-configured pyrano[2,3-b]chromenes via different dehydration pathways. Org Chem Front 2019. [DOI: 10.1039/c9qo00366e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The enamine-catalyzed [3 + 3]-cycloaddition between chroman-2-ols and β,γ-unsaturated α-ketoesters is developed to access both enantiomers of cis- and trans-fused pyrano[2,3-b]chromene derivatives.
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Affiliation(s)
- Xue-Jiao Lv
- Key Laboratory of Marine Drugs
- Chinese Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Wei-Wei Zhao
- Key Laboratory of Marine Drugs
- Chinese Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Ying-Han Chen
- Key Laboratory of Marine Drugs
- Chinese Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Sheng-Biao Wan
- Key Laboratory of Marine Drugs
- Chinese Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Yan-Kai Liu
- Key Laboratory of Marine Drugs
- Chinese Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
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22
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Structures and Bioactive Properties of Myrtucommulones and Related Acylphloroglucinols from Myrtaceae. Molecules 2018; 23:molecules23123370. [PMID: 30572614 PMCID: PMC6321051 DOI: 10.3390/molecules23123370] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 12/14/2018] [Accepted: 12/17/2018] [Indexed: 12/13/2022] Open
Abstract
Myrtaceae are a group of plants that include a number of renowned species used in ethnomedicine in many areas worldwide. Their valuable therapeutic properties have stimulated a fruitful research activity addressed to the identification of the bioactive components of their extracts yielding a great diversity of terpenes; polyphenols; and other exclusive products. Among the latter, starting with the discovery of myrtucommulone A from myrtle (Myrtus communis), a series of structurally-related acylphloroglucinol compounds have been characterized from several species that represent the basic active principles to be considered in view of possible drug development. Aspects concerning chemical and biological properties of these products are reviewed in the present paper.
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23
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Su JC, Wang S, Cheng W, Huang XJ, Li MM, Jiang RW, Li YL, Wang L, Ye WC, Wang Y. Phloroglucinol Derivatives with Unusual Skeletons from Cleistocalyx operculatus and Their in Vitro Antiviral Activity. J Org Chem 2018; 83:8522-8532. [PMID: 29963868 DOI: 10.1021/acs.joc.8b01050] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Four novel phloroglucinol derivatives (1-4) featuring a 2,4-dimethyl-cinnamyl-phloroglucinol moiety, along with their putative biosynthetic precursors 5 and 6, were isolated from the leaves of Cleistocalyx operculatus. Compounds 1 and 2 are two pairs of new enantiomeric phloroglucinol dimers possessing an unprecedented polycyclic skeleton with a highly functionalized dihydropyrano[3,2- d]xanthene tetracyclic core. Compounds 3 and 4 are two new phloroglucinol-terpene adducts (PTAs) with a novel carbon skeleton. The structures of 1-4 including their absolute configurations were unambiguously accomplished by combination of extensive spectroscopic analyses, X-ray crystallography, and quantum chemical ECD calculations. A hypothetical biosynthetic pathway for 1-4 was also proposed. Compound 1 exhibited a promising in vitro antiherpes simplex virus type-1 (HSV-1) effect.
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Affiliation(s)
- Jun-Cheng Su
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Shan Wang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Wen Cheng
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Xiao-Jun Huang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Man-Mei Li
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Ren-Wang Jiang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Yao-Lan Li
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Lei Wang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Wen-Cai Ye
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Ying Wang
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China.,Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research , Jinan University , Guangzhou 510632 , People's Republic of China
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24
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Peng X, Qiu M. Meroterpenoids from Ganoderma Species: A Review of Last Five Years. NATURAL PRODUCTS AND BIOPROSPECTING 2018; 8:137-149. [PMID: 29722004 PMCID: PMC5971034 DOI: 10.1007/s13659-018-0164-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 04/23/2018] [Indexed: 05/31/2023]
Abstract
Meroterpenoids are hybrid natural products that partially originate from the terpenoid pathway. Ganoderma meroterpenoids (GMs) are a type of meroterpenoids containing a 1,2,4-trisubstituted phenyl and a polyunsaturated terpenoid part. Over last 5 years, great efforts have been made to conduct phytochemistry research on the genus Ganoderma, which have led to the isolation and identification of a number of GMs. These newly reported GMs showed diverse structures and a wide range of biological activities. This review gives an overview of new GMs from genus Ganoderma and their biological activities and biosynthetic pathway, focusing on the period from 2013 until 2018.
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Affiliation(s)
- Xingrong Peng
- State Key Laboratory of Phytochemistry and Plant Sources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Minghua Qiu
- State Key Laboratory of Phytochemistry and Plant Sources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China.
- University of the Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
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25
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Peng XR, Lu SY, Shao LD, Zhou L, Qiu MH. Structural Elucidation and Biomimetic Synthesis of (±)-Cochlactone A with Anti-Inflammatory Activity. J Org Chem 2018; 83:5516-5522. [PMID: 29707952 DOI: 10.1021/acs.joc.8b00525] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xing-Rong Peng
- Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
| | - Shuang-Yang Lu
- Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
- Graduate University of the Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Li-Dong Shao
- Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
| | - Lin Zhou
- Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
| | - Ming-Hua Qiu
- Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China
- Graduate University of the Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
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26
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Cheng MJ, Cao JQ, Yang XY, Zhong LP, Hu LJ, Lu X, Hou BL, Hu YJ, Wang Y, You XF, Wang L, Ye WC, Li CC. Catalytic asymmetric total syntheses of myrtucommuacetalone, myrtucommuacetalone B, and callistrilones A, C, D and E. Chem Sci 2018; 9:1488-1495. [PMID: 29629171 PMCID: PMC5875087 DOI: 10.1039/c7sc04672c] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Accepted: 11/26/2017] [Indexed: 01/13/2023] Open
Abstract
Herein, we describe a concise catalytic approach to the first asymmetric total syntheses of myrtucommuacetalone, myrtucommuacetalone B, and callistrilones A, C, D and E. The syntheses proceed in only 5-7 steps from the readily available compound 11, without the need for protecting groups. Key features of the syntheses include a unique organocatalytic asymmetric Friedel-Crafts-type Michael addition with high enantioselectivity and a broad substrate scope, a novel Michael-ketalization-annulation cascade reaction, and an oxidative [3 + 2] cycloaddition. Furthermore, the new compound 7 exhibited potent antibacterial activities against several multidrug-resistant strains (MRSA, VISA and VRE), and showed greater potency than vancomycin.
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Affiliation(s)
- Min-Jing Cheng
- College of Pharmacy , Jinan University , Guangzhou 510632 , China . ;
- Department of Chemistry , Southern University of Science and Technology , Shenzhen 518055 , China .
| | - Jia-Qing Cao
- College of Pharmacy , Jinan University , Guangzhou 510632 , China . ;
| | - Xin-Yi Yang
- Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
| | - Li-Ping Zhong
- Department of Chemistry , Southern University of Science and Technology , Shenzhen 518055 , China .
| | - Li-Jun Hu
- Department of Chemistry , Southern University of Science and Technology , Shenzhen 518055 , China .
| | - Xi Lu
- Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
| | - Bao-Long Hou
- Department of Chemistry , Southern University of Science and Technology , Shenzhen 518055 , China .
| | - Ya-Jian Hu
- Department of Chemistry , Southern University of Science and Technology , Shenzhen 518055 , China .
| | - Ying Wang
- College of Pharmacy , Jinan University , Guangzhou 510632 , China . ;
| | - Xue-Fu You
- Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
| | - Lei Wang
- College of Pharmacy , Jinan University , Guangzhou 510632 , China . ;
| | - Wen-Cai Ye
- College of Pharmacy , Jinan University , Guangzhou 510632 , China . ;
| | - Chuang-Chuang Li
- Department of Chemistry , Southern University of Science and Technology , Shenzhen 518055 , China .
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27
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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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28
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Hu LJ, Cheng MJ, Cao JQ, Zhong LP, Hu YJ, Wang Y, Wang L, Ye WC, Li CC. Asymmetric total syntheses of callistrilones B, G and J. Org Chem Front 2018. [DOI: 10.1039/c8qo00130h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A highly concise approach for the first asymmetric and gram-scale total syntheses of callistrilones B, G and J is reported.
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Affiliation(s)
- Li-Jun Hu
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Min-Jing Cheng
- College of Pharmacy
- Jinan University
- Guangzhou 510632
- China
- Department of Chemistry
| | - Jia-Qing Cao
- College of Pharmacy
- Jinan University
- Guangzhou 510632
- China
| | - Li-Ping Zhong
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen 518055
- China
| | - Ya-Jian Hu
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen 518055
- China
| | - Ying Wang
- College of Pharmacy
- Jinan University
- Guangzhou 510632
- China
| | - Lei Wang
- College of Pharmacy
- Jinan University
- Guangzhou 510632
- China
| | - Wen-Cai Ye
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
- College of Pharmacy
| | - Chuang-Chuang Li
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen 518055
- China
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