1
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Hu Z, Liu YN, Yu MH, Hou AJ, Li JY, Li YX, Lei C. Formyl phloroglucinol meroterpenoids from the leaves of Eucalyptus globulus subsp. maidenii and their ATP-citrate lyase inhibitory activities. Fitoterapia 2024; 173:105813. [PMID: 38184174 DOI: 10.1016/j.fitote.2023.105813] [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: 11/09/2023] [Revised: 12/29/2023] [Accepted: 12/29/2023] [Indexed: 01/08/2024]
Abstract
Three new formyl phloroglucinol meroterpenoids, eumaidials A-C (1-3), were isolated from the leaves of Eucalyptus globulus subsp. maidenii, along with ten known analogues (4-13). Their chemical structures were determined by various spectral data and electronic circular dichroism calculations. Eumaidial A (1) is the first β-caryophyllene-based formyl phloroglucinol meroterpenoids from the genus Eucalyptus. Compounds 1-4 and 10 exhibited ATP-citrate lyase inhibitory activities, and compounds 2 and 3 suppressed the hepatocyte lipogenesis.
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Affiliation(s)
- Zhu Hu
- School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Yi-Nan Liu
- School of Pharmacy, Fudan University, Shanghai 201203, China; Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Mei-Hua Yu
- School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Ai-Jun Hou
- School of Pharmacy, Fudan University, Shanghai 201203, China; School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jing-Ya Li
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - Ying-Xia Li
- School of Pharmacy, Fudan University, Shanghai 201203, China.
| | - Chun Lei
- School of Pharmacy, Fudan University, Shanghai 201203, China.
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2
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Daus M, Chakthong S, Dumjun K, Paosen S, Voravuthikunchai SP, Poldorn P, Jungsuttiwong S, Chomlamay N, Yangok K, Watanapokasin R. New acylphloroglucinols from a crude acetone extract of Eucalyptus camaldulensis Dehnh. leaf. Nat Prod Res 2024; 38:270-277. [PMID: 36054811 DOI: 10.1080/14786419.2022.2118742] [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: 05/11/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 10/14/2022]
Abstract
Acylphloroglucinols are well-known Eucalyptus secondary metabolites which exhibit a variety of structures and bioactivities. The investigation of a crude acetone extract of Eucalyptus camaldulensis leaves led to the isolation of two new acylphloroglucinols, eucalypcamals O and P (1 and 2) together with seven phloroglucinols (3-9), and a benzene derivative (10). Their chemical structures were elucidated by 1D and 2D nuclear magnetic resonance (NMR) spectroscopy and mass spectroscopy. The absolute configurations of compounds 1 and 2 were established by comparison of experimental and calculated electronic circular dichroism (ECD) data. In the putative biosynthetic pathway, eucalypcamals O and P should be derived from hetero-Diels-Alder reaction between grandinol and trans-isoeugenol.
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Affiliation(s)
- Mareena Daus
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Suda Chakthong
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Krittima Dumjun
- Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Center of Antimicrobial Biomaterial Innovation-Southeast Asia, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Science for Industry Program, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Supakit Paosen
- Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Center of Antimicrobial Biomaterial Innovation-Southeast Asia, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Supayang P Voravuthikunchai
- Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Center of Antimicrobial Biomaterial Innovation-Southeast Asia, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Science for Industry Program, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Preeyaporn Poldorn
- Department of Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, Thailand
| | - Siriporn Jungsuttiwong
- Department of Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, Thailand
| | - Natharika Chomlamay
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand
| | - Kanyaluck Yangok
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand
| | - Ramida Watanapokasin
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand
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3
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Baxter JR, Holland DC, Gavranich B, Nicolle D, Hayton JB, Avery VM, Carroll AR. NMR Fingerprints of Formyl Phloroglucinol Meroterpenoids and Their Application to the Investigation of Eucalyptus gittinsii subsp. gittinsii. JOURNAL OF NATURAL PRODUCTS 2023; 86:1317-1334. [PMID: 37171174 DOI: 10.1021/acs.jnatprod.3c00139] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
NMR fingerprints provide powerful tools to identify natural products in complex mixtures. Principal component analysis and machine learning using 1H and 13C NMR data, alongside structural information from 180 published formyl phloroglucinols, have generated diagnostic NMR fingerprints to categorize subclasses within this group. This resulted in the reassignment of 167 NMR chemical shifts ascribed to 44 compounds. Three pyrano-diformyl phloroglucinols, euglobal In-1 and psiguadiols E and G, contained 1H and 13C NMR data inconsistent with their predicted phloroglucinol subclass. Subsequent reinterpretation of their 2D NMR data combined with DFT 13C NMR chemical shift and ECD calculations led to their structure revisions. Direct covariance processing of HMBC data permitted 1H resonances for individual compounds in mixtures to be associated, and analysis of their 1H/13C HMBC correlations using the fingerprint tool further classified components into phloroglucinol subclasses. NMR fingerprinting HMBC data obtained for six eucalypt flower extracts identified three subclasses of pyrano-acyl-formyl phloroglucinols from Eucalyptus gittinsii subsp. gittinsii. New, eucalteretial F and (+)-eucalteretial B, and known, (-)-euglobal VII and eucalrobusone C, compounds, each belonging to predicted subclasses, were isolated and characterized. Staphylococcus aureus and Plasmodium falciparum screening revealed eucalrobusone C as the most potent antiplasmodial formyl phloroglucinol to date.
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Affiliation(s)
- James R Baxter
- School of Environment and Science, Griffith University, Gold Coast, Qld 4222, Australia
| | - Darren C Holland
- School of Environment and Science, Griffith University, Gold Coast, Qld 4222, Australia
| | - Brody Gavranich
- School of Environment and Science, Griffith University, Gold Coast, Qld 4222, Australia
| | - Dean Nicolle
- Currency Creek Arboretum, PO Box 808, Melrose Park, SA 5039, Australia
| | - Joshua B Hayton
- School of Environment and Science, Griffith University, Gold Coast, Qld 4222, Australia
| | - Vicky M Avery
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Qld 4111, Australia
- Discovery Biology, Griffith University, Brisbane, QLD 4111, Australia
| | - Anthony R Carroll
- School of Environment and Science, Griffith University, Gold Coast, Qld 4222, Australia
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Qld 4111, Australia
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4
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Daus M, Wunnoo S, Voravuthikunchai SP, Saithong S, Poldorn P, Jungsuttiwong S, Chomlamay N, Yangok K, Watanapokasin R, Chakthong S. Phloroglucinol-meroterpenoids from the leaves of Eucalyptus camaldulensis Dehnh. PHYTOCHEMISTRY 2022; 200:113179. [PMID: 35398088 DOI: 10.1016/j.phytochem.2022.113179] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 03/26/2022] [Accepted: 03/27/2022] [Indexed: 06/14/2023]
Abstract
Fourteen undescribed phloroglucinol-meroterpenoids, namely eucalypcamals A-N, were isolated from a CH2Cl2 extract of the leaves of Eucalyptus camaldulensis Dehnh. In addition, from the same extract, twelve known phloroglucinols, three known flavonoids, and four known phenolic compounds were also isolated. The structures of the undescribed compounds were analyzed by 1D and 2D nuclear magnetic resonance (NMR) spectroscopy, and high resolution electrospray ionization mass spectrometry (HRESIMS). The assignments of the absolute configurations were performed by comparing the experimental electronic circular dichroism (ECD) data with the calculated values. Eucalyprobusal E was found to be cytotoxic against HCT116, Jurkat, and MDA-MB-231 cell lines with IC50 values of 17.6, 9.44, and 17.9 μM, respectively. Eucalrobusone F exhibited antibacterial activity against methicillin-resistant S. aureus (MRSA) and S. aureus with minimum inhibitory concentration/minimum bactericidal concentration (MIC/MBC) values of 4/4 μg/mL while euglobal Ia1 showed antifungal activity with MIC/MFC values of 16/16 μg/mL.
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Affiliation(s)
- Mareena Daus
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Suttiwan Wunnoo
- Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Supayang P Voravuthikunchai
- Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Antimicrobial Biomaterial Innovation-Southeast Asia, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Saowanit Saithong
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Preeyaporn Poldorn
- Department of Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190, Thailand
| | - Siriporn Jungsuttiwong
- Department of Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190, Thailand
| | - Natharika Chomlamay
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Sukumvit 23, Bangkok, 10110, Thailand
| | - Kanyaluck Yangok
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Sukumvit 23, Bangkok, 10110, Thailand
| | - Ramida Watanapokasin
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Sukumvit 23, Bangkok, 10110, Thailand
| | - Suda Chakthong
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
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5
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Faezeh Taghizadeh S, Panahi A, Esmaeilzadeh Kashi M, Kretschmer N, Asili J, Ahmad Emami S, Azizi M, Shakeri A. Structural Diversity of Complex Phloroglucinol Derivatives from Eucalyptus Species. Chem Biodivers 2022; 19:e202200025. [PMID: 35621714 DOI: 10.1002/cbdv.202200025] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 05/16/2022] [Indexed: 12/17/2022]
Abstract
Several species of the genus Eucalyptus are used in many traditional medicine systems for the treatment of respiratory tract infections, colds, flu, sore throats, and bronchitis. The genus Eucalyptus (Myrtaceae) is a well-known natural source of bioactive phloroglucinols. These polyphenolic compounds bear an aromatic phenyl ring with three hydroxy groups (1,3,5-trihydroxybenzene) which have been exhibiting a variety of biological activities such as antimicrobial, anticancer, anti-allergic, anti-inflammatory, and antioxidant activities. This review summarizes the literature published from 1997 until the end of 2021 and addresses the structure diversity of phloroglucinols isolated from Eucalyptus species and their biological activities. Phloroglucinol-terpene adducts are the main class of compounds that have been reported in this genus.
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Affiliation(s)
- Seyedeh Faezeh Taghizadeh
- Department of Horticultural Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad, 9177948978, Mashhad, Iran.,Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
| | - Ali Panahi
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
| | - Marziyeh Esmaeilzadeh Kashi
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
| | - Nadine Kretschmer
- Department of Pharmacognosy, Institute of Pharmaceutical Sciences, University of Graz, A-8010, Graz, Austria
| | - Javad Asili
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
| | - Seyed Ahmad Emami
- Department of Traditional Pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
| | - Majid Azizi
- Department of Horticultural Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad, 9177948978, Mashhad, Iran
| | - Abolfazl Shakeri
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, 9177897165, Mashhad, Iran
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6
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Liu R, Liu XY, Li M, Liu J, Yang MH, Kong LY. Eurobusones A-D, four antibacterial formyl phloroglucinol meoterpenoids from Eucalyptus robusta. Fitoterapia 2022; 157:105131. [PMID: 35093480 DOI: 10.1016/j.fitote.2022.105131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 01/13/2022] [Accepted: 01/13/2022] [Indexed: 11/04/2022]
Abstract
Four antibacterial formyl phloroglucinol meroterpenoids (FPMs), eurobusones A-D (1-4), as well as six known analogues (5-10), were isolated from the leaves of Eucalyptus robusta. Their structures were determined by the analysis of spectroscopic data and electron circular dichroism (ECD) calculation, along with the application of Snatzke helicity rules. Among them, compounds 2 and 8-10 showed good activity against Staphylococcus aureus, Pseudomonas aeruginosa and Bacillus subtilis with MIC50 values less than 1.00 μg/mL.
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Affiliation(s)
- Rui Liu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Xiang-Yue Liu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Min Li
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Juan Liu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Ming-Hua Yang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China..
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China..
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7
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Yan XL, Jun-Sang, Zhang X, Lin Y, Long QD, Zhu QF, Liao SG. Euphorboside A, a cytotoxic meroterpenoid glycoside with an unusual humulene-phloroglucinol skeleton from Euphorbia kansuensis. Fitoterapia 2021; 153:104966. [PMID: 34144143 DOI: 10.1016/j.fitote.2021.104966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/11/2021] [Accepted: 06/13/2021] [Indexed: 11/24/2022]
Abstract
Euphorboside A (1), an unusual meroterpenoid glycoside featuring the incorporation of an acylphloroglucinol moiety into a humulene skeleton to form a 6/6/11 ring system, was isolated from the roots of Euphorbia kansuensis. Its structure was elucidated by extensive spectroscopic analysis, chemical methods, and ECD calculations. Compound 1 was screened for the cytotoxicity against nine cancer cell lines, and 1 showed marked inhibitory activities against human colon cancer RKO and human breast cancer MDA-MB-231 cell lines with IC50 values of 3.70 and 4.15 μM, respectively.
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Affiliation(s)
- Xue-Long Yan
- School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Jun-Sang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xu Zhang
- School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Yan Lin
- School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Qing-De Long
- School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Qin-Feng Zhu
- School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China
| | - Shang-Gao Liao
- School of Pharmacy, Guizhou Medical University, Guian New District 550025, Guizhou, China.
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8
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Tyrosinase inhibitors from the leaves of Eucalyptus globulus. Fitoterapia 2019; 139:104418. [PMID: 31704262 DOI: 10.1016/j.fitote.2019.104418] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 10/31/2019] [Accepted: 11/04/2019] [Indexed: 11/24/2022]
Abstract
A new isoiphionane sesquiterpene, named (3S, 5S, 7S, 10R)-3, 11-dihydroxyisoiphion-4-one (1), two new phloroglucinol glycosides, named eucalglobuside A (2) and eucalglobuside B (3), along with 15 known compounds were isolated from the leaves of Eucalyptus globulus. Their structures were elucidated based on extensive spectroscopic analysis and in comparison with literature data. The absolute configuration of compound 1 was determined by ECD calculation. All isolates were evaluated their inhibitory activities against the mushroom tyrosinase. As a result, three sesquiterpenoids, 1, 5β, 11-dihydroxy-iphionan-4-one (5), and (-)-globulol (8), exhibited the most potent activities with IC50 values of 14.17 μM, 10.08 μM and 9.79 μM, respectively.
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9
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Shang ZC, Han C, Xu JL, Liu RH, Yin Y, Wang XB, Yang MH, Kong LY. Twelve formyl phloroglucinol meroterpenoids from the leaves of Eucalyptus robusta. PHYTOCHEMISTRY 2019; 163:111-117. [PMID: 31039475 DOI: 10.1016/j.phytochem.2019.04.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 12/28/2018] [Accepted: 04/16/2019] [Indexed: 06/09/2023]
Abstract
Twelve formyl phloroglucinol meroterpenoids (FPMs) were isolated from the leaves of Eucalyptus robusta Smith. Their structures were elucidated via spectroscopic data analysis, the circular dichroism (CD) exciton chirality method, Rh2(OCOCF3)4-induced CD experiments, and application of the Snatzke chirality rules. Eucalrobusones Q, S, and X are the first FPMs that have been identified in which the C-7' of phloroglucinol is linked to the C-15 of cadinane, the C-4 of cubebane, and the C-8 of menthane, respectively. (+)-Eucalrobusone X exhibited the most potent antifungal ability against Candida albicans with a MIC50 value of 10.78 μg/mL, and eucalrobusone U exhibited the greatest anti-C. glabrata activity with MIC50 value of 1.53 μg/mL.
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Affiliation(s)
- Zhi-Chun Shang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People's Republic of China
| | - Chao Han
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People's Republic of China
| | - Jia-Li Xu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People's Republic of China
| | - Rui-Huan Liu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People's Republic of China
| | - Yong Yin
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People's Republic of China
| | - Xiao-Bing Wang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People's Republic of China
| | - Ming-Hua Yang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People's Republic of China
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, People's Republic of China.
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10
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Pham TA, Hu XL, Huang XJ, Ma MX, Feng JH, Li JY, Hou JQ, Zhang PL, Nguyen VH, Nguyen MT, Xiong F, Fan CL, Zhang XQ, Ye WC, Wang H. Phloroglucinols with Immunosuppressive Activities from the Fruits of Eucalyptus globulus. JOURNAL OF NATURAL PRODUCTS 2019; 82:859-869. [PMID: 30848923 DOI: 10.1021/acs.jnatprod.8b00920] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Five new phloroglucinol derivatives, eucalyptins C-G (1-5), together with 13 known analogues (6-18) were isolated from the fruits of Eucalyptus globulus. The structures and absolute configurations of 1-5 were established by means of spectroscopic data analysis, computational calculation methods, and single-crystal X-ray diffraction. Compounds 1-18 were investigated for their immunosuppressive effects in vitro, and 1, 2, 6, and 7 displayed moderate inhibitory activities with IC50 values of 11.8, 10.2, 18.2, and 19.1 μM, respectively. The stimulation index (SI) of 1 was 64.2 and was compared to that of cyclosporine A (SI = 149.57). Further study demonstrated that 1 exhibited an immunosuppressive effect through inducing apoptosis and inhibiting cytokine secretion.
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Affiliation(s)
- Thi-Anh Pham
- State Key Laboratory of Natural Medicines, Department of TCM Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 210009 , People's Republic of China
- Department of Traditional Medicine, School of Pharmacy , Haiphong University of Medicine and Pharmacy , 72 A Nguyen Binh Khiem , Haiphong City , Vietnam
| | - Xiao-Long Hu
- State Key Laboratory of Natural Medicines, Department of TCM Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 210009 , People's Republic of China
| | - Xiao-Jun Huang
- Institute of Traditional Chinese Medicine and Natural Products , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Ming-Xi Ma
- State Key Laboratory of Bioelectronics, Jiangsu Laboratory for Biomaterials and Devices , Southeast University , Nanjing 210009 , People's Republic of China
| | - Jia-Hao Feng
- State Key Laboratory of Natural Medicines, Department of TCM Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 210009 , People's Republic of China
| | - Jun-Yan Li
- State Key Laboratory of Natural Medicines, Department of TCM Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 210009 , People's Republic of China
| | - Ji-Qin Hou
- State Key Laboratory of Natural Medicines, Department of TCM Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 210009 , People's Republic of China
| | - Pei-Lin Zhang
- State Key Laboratory of Natural Medicines, Department of TCM Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 210009 , People's Republic of China
| | - Van-Hung Nguyen
- Department of Traditional Medicine, School of Pharmacy , Haiphong University of Medicine and Pharmacy , 72 A Nguyen Binh Khiem , Haiphong City , Vietnam
| | - Manh-Tuyen Nguyen
- Department of Traditional Medicine , Hanoi University of Pharmacy , 13-15 Le Thanh Tong, Hoan Kiem , Hanoi , Vietnam
| | - Fei Xiong
- State Key Laboratory of Bioelectronics, Jiangsu Laboratory for Biomaterials and Devices , Southeast University , Nanjing 210009 , People's Republic of China
| | - Chun-Lin Fan
- Institute of Traditional Chinese Medicine and Natural Products , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Xiao-Qi Zhang
- Institute of Traditional Chinese Medicine and Natural Products , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Wen-Cai Ye
- Institute of Traditional Chinese Medicine and Natural Products , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Hao Wang
- State Key Laboratory of Natural Medicines, Department of TCM Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 210009 , People's Republic of China
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11
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An Array of Bioactive Compounds From Australian Eucalypts and Their Relevance in Pancreatic Cancer Therapeutics. Pancreas 2018; 47:690-707. [PMID: 29894418 DOI: 10.1097/mpa.0000000000001074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Pancreatic cancer (PC) is one of the most devastating human cancers, and despite the significant advances in the current therapeutic options, the overall survival rate for PC has remained static for the past 50 years. Plant-derived bioactive compounds play a vital role in cancer therapeutics by providing new lead compounds for future drug development. Therefore, the isolation, characterization, and identification of new bioactive compounds for the prevention and treatment of cancer continue to be an important aspect of natural product research. Many in vitro and in vivo studies published in the last few decades have established strong links between the phytochemical profile of eucalypts and anticancer activity. However, only a small number of these reports have attempted to demonstrate a relationship between the biological activity of eucalypt extracts and PC. This review focuses on potential anti-PC effects of an array of bioactive compounds present in various species of eucalypts. It also highlights the necessity for further in vitro and in vivo studies to develop a complete understanding of the potential this group of plants has for the development of potent and specific chemotherapeutic drugs for PC.
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12
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Pham TA, Shair Mohammad I, Vu VT, Hu XL, Birendra C, Ulah A, Guo C, Lü XY, Ye WC, Wang H. Phloroglucinol Derivatives from the Fruits of Eucalyptus globulus and Their Cytotoxic Activities. Chem Biodivers 2018; 15:e1800052. [PMID: 29692000 DOI: 10.1002/cbdv.201800052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 04/19/2018] [Indexed: 11/07/2022]
Abstract
A new phloroglucinol derivative, named eucalyptin B (1), along with five related known compounds (2 - 6), was isolated from the fruits of Eucalyptus globulus. Their structures were elucidated by means of 1D- and 2D-NMR spectroscopy, with the absolute configuration of 1 determined by electronic circular dichroism (ECD) calculations. All isolated compounds (1 - 6) were evaluated for their cytotoxic activities against lung (A549), breast (4T1), and skin (B16F10) cancer cell lines. On the basis of cell viability assay, the cytotoxic activity of eucalyptin B (1) was further confirmed by apoptosis assay. Additionally, after treatment with eucalyptin B (1), the apoptosis factor proteins (Bcl2 and Bax) and caspase-3 levels in A549 cells were also determined by Western-blot analysis. By cytotoxic assay, eucalyptin B (1) exhibited potent cytotoxicity against A549 cells with an IC50 value of 1.51 μm and induced concentration dependent apoptosis of up to 49%. Additionally, eucalyptin B (1) inhibited 5-fold and increased 10-folds in the level of Bcl2 and Bax, respectively. Furthermore, the 11-fold increase in the level of caspase-3 confirmed eucalyptin B (1) activated caspase dependent apoptosis pathway. In conclusion, the isolated compound eucalyptin B (1) has promising cytotoxic activity in tumor cells, especially in A549.
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Affiliation(s)
- Thi-Anh Pham
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Imran Shair Mohammad
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Van-Tuan Vu
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Xiao-Long Hu
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Chaurasiya Birendra
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Aftab Ulah
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Cui Guo
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Xian-Yu Lü
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Wen-Cai Ye
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drug Research, Jinan University, Guangzhou, 510632, P. R. China
| | - Hao Wang
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
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13
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Shang ZC, Yang MH, Liu RH, Wang XB, Kong LY. New Formyl Phloroglucinol Meroterpenoids from the Leaves of Eucalyptus robusta. Sci Rep 2016; 6:39815. [PMID: 28004790 PMCID: PMC5177953 DOI: 10.1038/srep39815] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 11/28/2016] [Indexed: 11/09/2022] Open
Abstract
Seven new formyl phloroglucinol meroterpenoids (FPMs), namely eucalrobusones J-P (1–7), as well as three known ones (8–10) were isolated from the leaves of Eucalyptus robusta. Their structures were elucidated by spectroscopic data analysis, and their absolute configurations were determined by applications of the Snatzke’s helicity rule and the electron circular dichroism (ECD) calculation. These FPMs are diverse in coupling patterns between phloroglucinol and sesquiterpenoid units, forming novel polycyclic ring systems. Compound 1 possesses a new carbon skeleton that a 1-oxaspiro[5.6]dodecane core is formed through C-14 rather than C-4 of the aromadendrane moiety. Compound 2 features a novel 6/7/5 ring-fused 6-oxabicyclo[3.2.2]nonane skeleton. Compounds 3–5 are rare aristolane-based FPMs. By forming different oxo bridges, compound 3 is the first sample of FPM with benzo-dihydrofuran structure, and compound 4 possesses a novel 6/6/6/6/3-fused pentacyclic skeleton. Compounds 1, 6, and 8 exhibited significant antifungal activities against Candida glabrata with MIC50 values of 2.57, 1.95, and 2.49 μg/mL, respectively.
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Affiliation(s)
- Zhi-Chun Shang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People' s Republic of China
| | - Ming-Hua Yang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People' s Republic of China
| | - Rui-Huan Liu
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People' s Republic of China
| | - Xiao-Bing Wang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People' s Republic of China
| | - Ling-Yi Kong
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People' s Republic of China
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14
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Tang Y, Xiong J, Zou Y, Zhang HY, Hu JF. Palhicerines A-F, Lycopodium alkaloids from the club moss Palhinhaea cernua. PHYTOCHEMISTRY 2016; 131:130-139. [PMID: 27576047 DOI: 10.1016/j.phytochem.2016.08.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 08/08/2016] [Accepted: 08/19/2016] [Indexed: 06/06/2023]
Abstract
Four fawcettimine-type (palhicerines A-D, resp.) and two lycopodine-type (palhicerines E and F) Lycopodium alkaloids together with twenty known ones were isolated from the whole plant of Palhinhaea cernua. The structures and absolute configurations of the palhicerines A-F were determined by extensive spectroscopic methods, single-crystal X-ray diffraction analyses, chemical transformation, and electronic circular dichroism (ECD) calculations or induced electronic circular dichroism (IECD) spectra. Among the isolates, the new C/D-ring of the palhicerines A-C (trans-fused fawcettimine-type alkaloids) are rare, and each possesses a β-oriented C-16 methyl group and a distinctive tertiary methoxy group at C-13. Chemotaxonomy for differentiating species in the genus Palhinhaea is briefly discussed.
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Affiliation(s)
- Yu Tang
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, No. 826 Zhangheng Road, Shanghai, 201203, PR China
| | - Juan Xiong
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, No. 826 Zhangheng Road, Shanghai, 201203, PR China.
| | - Yike Zou
- Department of Chemistry, University of Pennsylvania, 231 S. 34 Street, Philadelphia, PA, 19104-6323, USA
| | - Hai-Yan Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Material Medica, Chinese Academy of Sciences, No. 555 Zuchongzhi Road, Shanghai, 201203, PR China
| | - Jin-Feng Hu
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, No. 826 Zhangheng Road, Shanghai, 201203, PR China.
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15
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Shang ZC, Yang MH, Jian KL, Wang XB, Kong LY. (1) H NMR-Guided Isolation of Formyl-Phloroglucinol Meroterpenoids from the Leaves of Eucalyptus robusta. Chemistry 2016; 22:11778-84. [PMID: 27412352 DOI: 10.1002/chem.201601732] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Indexed: 11/08/2022]
Abstract
Nine formyl-phloroglucinolmeroterpenoids (FPMs), namely, eucalrobusones A-I (1-9), were isolated from the leaves of Eucalyptus robusta by tracking the phenolic hydroxyl (1) H NMR peaks. The Snatzke helicity rules for the Cotton effects of twisted benzene rings were applied to elucidate the absolute configurations of the FPMs. These findings, along with NMR spectroscopy, the circular dichroism (CD) exciton chirality method, and CD calculations, allowed complete structures for the FPMs to be assigned. Eucalrobusones A-F (1-6) are novel adducts formed between a formyl-derived carbon atom on the phloroglucinol ring and monoterpene and sesquiterpene components. Eucalrobusones G-I (7-9) are the first examples of FPMs with cubebane part structures connected by an unusual 1-oxaspiro[5.5]undecane subunit. Among these isolates, eucalrobusone C (3) showed significant cytotoxicity against HepG2, MCF-7, and U2OS cancer cell lines, with IC50 values less than 10 μm. Compound 3 significantly blocks cell proliferation in MCF-7 cells and induces MCF-7 cell death through apoptosis.
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Affiliation(s)
- Zhi-Chun Shang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, P. R. China
| | - Ming-Hua Yang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, P. R. China.
| | - Kai-Li Jian
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, P. R. China
| | - Xiao-Bing Wang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, P. R. China
| | - Ling-Yi Kong
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, P. R. China.
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16
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Palcernuine, the first [5/6/6/6]-cernuane-type alkaloid from Palhinhaea cernua f. sikkimensis. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.02.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Yu Y, Gan LS, Yang SP, Sheng L, Liu QF, Chen SN, Li J, Yue JM. Eucarobustols A-I, Conjugates of Sesquiterpenoids and Acylphloroglucinols from Eucalyptus robusta. JOURNAL OF NATURAL PRODUCTS 2016; 79:1365-1372. [PMID: 27142786 DOI: 10.1021/acs.jnatprod.6b00090] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nine new conjugates of sesquiterpenoids and acylphloroglucinols, named eucarobustols A-I (1-9), as well as 11 known analogues were isolated from the leaves of Eucalyptus robusta. The sesquiterpenoid motifs furnishing the new conjugates included four structural types of aristolane (1 and 2), guaiane (3), eudesmane (4), and aromadendrane (5-9) moieties. Compounds 1 and 2 were found to represent the first examples of conjugates of aristolane and acylphloroglucinol units. In turn, compound 3 features a new coupling model of guaiane and acylphloroglucinol via the C-4-C-7' bond. Compounds 1, 7, and 9 showed inhibitory activities against protein tyrosine phosphatase 1B (PTP1B) with IC50 values of 1.3, 1.8, and 1.6 μM, respectively.
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MESH Headings
- Drugs, Chinese Herbal/chemistry
- Drugs, Chinese Herbal/isolation & purification
- Drugs, Chinese Herbal/pharmacology
- Eucalyptus/chemistry
- Inhibitory Concentration 50
- Molecular Structure
- Nuclear Magnetic Resonance, Biomolecular
- Plant Leaves/chemistry
- Protein Tyrosine Phosphatase, Non-Receptor Type 1/antagonists & inhibitors
- Sesquiterpenes
- Sesquiterpenes, Eudesmane/chemistry
- Sesquiterpenes, Eudesmane/isolation & purification
- Sesquiterpenes, Eudesmane/pharmacology
- Sesquiterpenes, Guaiane/chemistry
- Sesquiterpenes, Guaiane/isolation & purification
- Sesquiterpenes, Guaiane/pharmacology
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Affiliation(s)
- Yang Yu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
| | - Li-She Gan
- Institute of Modern Chinese Medicine, College of Pharmaceutical Sciences, Zhejiang University , Hangzhou 310058, People's Republic of China
| | - Sheng-Ping Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
| | - Li Sheng
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
| | - Qun-Fang Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
| | - Shao-Nong Chen
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago , Chicago, Illinois 60612, United States
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
| | - Jian-Min Yue
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
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18
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Hu L, Zhang Y, Zhu H, Liu J, Li H, Li XN, Sun W, Zeng J, Xue Y, Zhang Y. Filicinic Acid Based Meroterpenoids with Anti-Epstein-Barr Virus Activities from Hypericum japonicum. Org Lett 2016; 18:2272-5. [PMID: 27116597 DOI: 10.1021/acs.orglett.6b00906] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Seven filicinic acid-based meroterpenoids (1-7), possessing 6/6/11, 6/6/7/5, or 6/6/10 ring systems, were isolated from Hypericum japonicum. All of them have novel skeletons with the incorporation of sesquiterpenoid moieties to an acylated filicinic acid. Compounds 2a and 4 exhibited significant efficacy on anti-Epstein-Barr virus, with EC50 values of 0.57 and 0.49 μM, respectively. Furthermore, compounds 2a and 4 were well accommodated to the binding pocket of 2GV9 predicted by the molecular docking.
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Affiliation(s)
- Linzhen Hu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China.,Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430022, P. R. China
| | - Yu Zhang
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430022, P. R. China
| | - Hucheng Zhu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
| | - Junjun Liu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
| | - Hua Li
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
| | - Xiao-Nian Li
- Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650204, P. R. China
| | - Weiguang Sun
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
| | - Junfen Zeng
- Department of Pharmacy, Renmin Hospital of Wuhan University , Wuhan 430060, P. R. China
| | - Yongbo Xue
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
| | - Yonghui Zhang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
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19
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Vuong QV, Chalmers AC, Jyoti Bhuyan D, Bowyer MC, Scarlett CJ. Botanical, Phytochemical, and Anticancer Properties of the Eucalyptus Species. Chem Biodivers 2016; 12:907-24. [PMID: 26080737 DOI: 10.1002/cbdv.201400327] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Indexed: 11/08/2022]
Abstract
The genus Eucalyptus (Myrtaceae) is mainly native to Australia; however, some species are now distributed globally. Eucalyptus has been used in indigenous Australian medicines for the treatment of a range of aliments including colds, flu, fever, muscular aches, sores, internal pains, and inflammation. Eucalyptus oils containing volatile compounds have been widely used in the pharmaceutical and cosmetics industries for a multitude of purposes. In addition, Eucalyptus extracts containing nonvolatile compounds are also an important source of key bioactive compounds, and several studies have linked Eucalyptus extracts with anticancer properties. With the increasing research interest in Eucalyptus and its health properties, this review briefly outlines the botanical features of Eucalyptus, discusses its traditional use as medicine, and comprehensively reviews its phytochemical and anticancer properties and, finally, proposes trends for future studies.
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Affiliation(s)
- Quan V Vuong
- Pancreatic Cancer Research, Nutrition Food & Health Research Group, School of Environmental and Life Sciences, University of Newcastle, Brush Rd, Ourimbah, NSW 2258, Australia, (phone: +61-2-43484680; fax: +61-2-43484145).,School of Environmental and Life Sciences, University of Newcastle, 10 Chittaway Road, Ourimbah, NSW 2258, Australia
| | - Anita C Chalmers
- School of Environmental and Life Sciences, University of Newcastle, 10 Chittaway Road, Ourimbah, NSW 2258, Australia
| | - Deep Jyoti Bhuyan
- Pancreatic Cancer Research, Nutrition Food & Health Research Group, School of Environmental and Life Sciences, University of Newcastle, Brush Rd, Ourimbah, NSW 2258, Australia, (phone: +61-2-43484680; fax: +61-2-43484145).,School of Environmental and Life Sciences, University of Newcastle, 10 Chittaway Road, Ourimbah, NSW 2258, Australia
| | - Michael C Bowyer
- Pancreatic Cancer Research, Nutrition Food & Health Research Group, School of Environmental and Life Sciences, University of Newcastle, Brush Rd, Ourimbah, NSW 2258, Australia, (phone: +61-2-43484680; fax: +61-2-43484145).,School of Environmental and Life Sciences, University of Newcastle, 10 Chittaway Road, Ourimbah, NSW 2258, Australia
| | - Christopher J Scarlett
- Pancreatic Cancer Research, Nutrition Food & Health Research Group, School of Environmental and Life Sciences, University of Newcastle, Brush Rd, Ourimbah, NSW 2258, Australia, (phone: +61-2-43484680; fax: +61-2-43484145). .,School of Environmental and Life Sciences, University of Newcastle, 10 Chittaway Road, Ourimbah, NSW 2258, Australia.
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20
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New cytotoxic phloroglucinols, baeckenones D–F, from the leaves of Indonesian Baeckea frutescens. Fitoterapia 2016; 109:236-40. [DOI: 10.1016/j.fitote.2016.01.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/19/2016] [Accepted: 01/20/2016] [Indexed: 11/19/2022]
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21
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Xiong J, Hong ZL, Xu P, Zou Y, Yu SB, Yang GX, Hu JF. ent-Abietane diterpenoids with anti-neuroinflammatory activity from the rare Chloranthaceae plant Chloranthus oldhamii. Org Biomol Chem 2016; 14:4678-89. [DOI: 10.1039/c6ob00731g] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Twelve new ent-abietane diterpenoids including four unprecedented structures were isolated and characterized from the rare plant Chloranthus oldhamii.
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Affiliation(s)
- Juan Xiong
- Department of Natural Products Chemistry
- School of Pharmacy
- Fudan University
- Shanghai 201203
- PR China
| | - Zhi-Lai Hong
- Department of Natural Products Chemistry
- School of Pharmacy
- Fudan University
- Shanghai 201203
- PR China
| | - Peng Xu
- Department of Pharmacology
- School of Pharmacy
- Fudan University
- Shanghai 201203
- PR China
| | - Yike Zou
- Department of Chemistry
- University of Pennsylvania
- Philadelphia
- USA
| | - Shang-Bo Yu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- PR China
| | - Guo-Xun Yang
- Department of Natural Products Chemistry
- School of Pharmacy
- Fudan University
- Shanghai 201203
- PR China
| | - Jin-Feng Hu
- Department of Natural Products Chemistry
- School of Pharmacy
- Fudan University
- Shanghai 201203
- PR China
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22
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Xiong J, Hong ZL, Gao LX, Shen J, Liu ST, Yang GX, Li J, Zeng H, Hu JF. Chlorabietols A-C, Phloroglucinol-Diterpene Adducts from the Chloranthaceae Plant Chloranthus oldhamii. J Org Chem 2015; 80:11080-5. [PMID: 26444099 DOI: 10.1021/acs.joc.5b01658] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three unprecedented phloroglucinol-diterpene adducts, chlorabietols A-C (1-3), were isolated from the roots of the rare Chloranthaceae plant Chloranthus oldhamii. They represent a new class of compounds, featuring an abietane-type diterpenoid coupled with different alkenyl phloroglucinol units by forming a 2,3-dihydrofuran ring. Their structures were elucidated by detailed spectroscopic analysis, molecular modeling studies, and electronic circular dichroism calculations. Compounds 1-3 showed inhibitory activity against protein tyrosine phosphatase 1B (PTP1B) with IC50 values of 12.6, 5.3, and 4.9 μM, respectively.
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Affiliation(s)
- Juan Xiong
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University , No. 826 Zhangheng Road, Shanghai 201203, P. R. China
| | - Zhi-Lai Hong
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University , No. 826 Zhangheng Road, Shanghai 201203, P. R. China
| | - Li-Xin Gao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , No. 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Jie Shen
- Institute of Bioengineering and Nanotechnology , 31 Biopolis Way, The Nanos 138669, Singapore
| | - Shu-Ting Liu
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University , No. 826 Zhangheng Road, Shanghai 201203, P. R. China
| | - Guo-Xun Yang
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University , No. 826 Zhangheng Road, Shanghai 201203, P. R. China
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , No. 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Huaqiang Zeng
- Institute of Bioengineering and Nanotechnology , 31 Biopolis Way, The Nanos 138669, Singapore
| | - Jin-Feng Hu
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University , No. 826 Zhangheng Road, Shanghai 201203, P. R. China
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23
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Penthorin A and B, two unusual 2,4′-epoxy-8,5′-neolignans from Penthorum chinese. Fitoterapia 2015; 100:7-10. [DOI: 10.1016/j.fitote.2014.11.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/03/2014] [Accepted: 11/07/2014] [Indexed: 11/19/2022]
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24
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Abstract
This review covers the isolation, structural determination, synthesis and chemical and microbiological transformations of natural sesquiterpenoids. The literature from January to December 2012 is reviewed, and 471 references are cited.
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Affiliation(s)
- Braulio M Fraga
- Instituto de Productos Naturales y Agrobiología, CSIC, 38206-La Laguna, Tenerife, Canary Islands, Spain
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25
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Wang WX, Zhu JJ, Zou Y, Hong ZL, Liu ST, Li M, Huang Y, Xiong J, Zhao Y, Yang GX, Xia G, Hu JF. Trichotomone, a new cytotoxic dimeric abietane-derived diterpene from Clerodendrum trichotomum. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.048] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Oh J, Bowling JJ, Zou Y, Chittiboyina AG, Doerksen RJ, Ferreira D, Leininger TD, Hamann MT. Configurational assignments of conformationally restricted bis-monoterpene hydroquinones: utility in exploration of endangered plants. Biochim Biophys Acta Gen Subj 2013; 1830:4229-34. [PMID: 23628705 DOI: 10.1016/j.bbagen.2013.04.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 04/15/2013] [Accepted: 04/18/2013] [Indexed: 11/18/2022]
Abstract
BACKGROUND Endangered plant species are an important resource for new chemistry. Lindera melissifolia is native to the Southeastern U.S. and scarcely populates the edges of lakes and ponds. Quantum mechanics (QM) used in combination with NMR/ECD is a powerful tool for the assignment of absolute configuration in lieu of X-ray crystallography. METHODS The EtOAc extract of L. melissifolia was subject to chromatographic analysis by VLC and HPLC. Spin-spin coupling constant (SSCC) were calculated using DFT at the MPW1PW91/6-31G(d,p) level for all staggered rotamers. ECD calculations employed Amber* force fields followed by PM6 semi-empirical optimizations. Hetero- and homo-nuclear coupling constants were extracted from 1D (1)H, E.COSY and HETLOC experiments. RESULTS Two meroterpenoids, melissifolianes A (1) and B (2) were purified and their 2-D structures elucidated using NMR and HRESIMS. The relative configuration of 1 was established using the combination of NOE-based distance restraints and the comparisons of experimental and calculated SSCCs. The comparison of calculated and experimental ECD assigned the absolute configuration of 1. The relative configuration of a racemic mixture, melissifoliane B (2) was established utilizing J-based analysis combined with QM and NMR techniques.Conclusion Our study of the Lindera melissifolia metabolome exemplifies how new chemistry remains undiscovered among the numerous endangered plant species and demonstrates how analysis by ECD and NMR combined with various QM calculations is a sensible approach to support the stereochemical assignment of molecules with conformationally restricted conformations. GENERAL SIGNIFICANCE QM-NMR/ECD combined approaches are of utility for unambiguous assignment of 3-D structures, especially with limited plant material and when a molecule is conformationally restricted. Conservation of an endangered plant species can be supported through identification of its new chemistry and utilization of that chemistry for commercial purposes.
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Affiliation(s)
- Joonseok Oh
- Department of Pharmacognosy, The University of Mississippi, University, MS 38677, USA
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Wahba AE, Fromentin Y, Zou Y, Hamann MT. Acantholactone, a new manzamine related alkaloid with an unprecedented δ-lactone and ε-lactam ring system. Tetrahedron Lett 2012; 53:6329-6331. [PMID: 23526162 PMCID: PMC3601935 DOI: 10.1016/j.tetlet.2012.08.140] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A new manzamine-related alkaloid with unprecedented δ-lactone and ε-lactam rings called acantholactone (2), was isolated from the Indonesian sponge Acanthostrongylophora sp. The relative configuration of the two new ring systems was established through detailed analysis of NOESY correlations combined with molecular modeling studies. The absolute configuration of 2 was determined as 12S, 24R, 25R, 26R by comparing the computed electronic circular dichroism (ECD) spectra with experimental values.
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Affiliation(s)
- Amir E. Wahba
- Department of Pharmacognosy, The School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- Department of Chemistry, Faculty of Science, Damietta University, Egypt
| | - Yann Fromentin
- Department of Pharmacognosy, The School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Yike Zou
- Department of Pharmacognosy, The School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Mark T. Hamann
- Department of Pharmacognosy, The School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- Department of Chemistry and Biochemistry, The University of Mississippi, University, MS 38677, USA
- Department of Pharmacology, The School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- National Center for Natural Products Research, The School of Pharmacy, The University of Mississippi, University, MS 38677, USA
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