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Yusoff YM, Abbott G, Young L, Edrada-Ebel R. Metabolomic Profiling of Malaysian and New Zealand Honey Using Concatenated NMR and HRMS Datasets. Metabolites 2022; 12:metabo12010085. [PMID: 35050207 PMCID: PMC8781004 DOI: 10.3390/metabo12010085] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/07/2022] [Accepted: 01/09/2022] [Indexed: 11/16/2022] Open
Abstract
This study aims to compare the metabolomic profiles of Malaysian and New Zealand honey while determining their anti-oncogenic activity for potential prophylactic functions. Metabolomics tools including multivariate analysis were applied on concatenated LC-HRMS and NMR datasets to afford an intensive chemical profile of honey samples and have a snapshot of the bioactive metabolites in the respective collections. Malaysian samples were found to have higher sugar and polyphenolic content, while New Zealand samples afforded higher concentration of low molecular weight (MW) lipids. However, New Zealand honey collected from the northern islands had higher concentration of acetylated saccharides, while those from the southern islands yielded higher low MW phenolic metabolites that were comparable to Malaysian honey. Mild anti-oncogenic compounds against breast cancer cell line ZR75 were putatively identified in Malaysian honey that included earlier described antioxidants such as gingerdiol, 2-hexylphenol-O-β-D-xylopyranoside, plastoquinone, tropine isovalerate, plumerinine, and 3,5-(12-phenyl-8-dodecenyl)resorcinol, along with several phenolic esters and lignans.
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Affiliation(s)
- Yusnaini M. Yusoff
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, The John Arbuthnott Building, 161 Cathedral Street, Glasgow G4 0RE, UK; (G.A.); (L.Y.)
- CADS, Level 8, Vertical Corporate Tower B, Avenue 10, The Vertical, No. 8 Jalan Kerinchi, Bangsar South City, Kuala Lumpur 59200, Malaysia
- Correspondence: or (Y.M.Y.); (R.E.-E.)
| | - Grainne Abbott
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, The John Arbuthnott Building, 161 Cathedral Street, Glasgow G4 0RE, UK; (G.A.); (L.Y.)
| | - Louise Young
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, The John Arbuthnott Building, 161 Cathedral Street, Glasgow G4 0RE, UK; (G.A.); (L.Y.)
| | - RuAngelie Edrada-Ebel
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, The John Arbuthnott Building, 161 Cathedral Street, Glasgow G4 0RE, UK; (G.A.); (L.Y.)
- Correspondence: or (Y.M.Y.); (R.E.-E.)
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Vu NK, Kim CS, Ha MT, Ngo QMT, Park SE, Kwon H, Lee D, Choi JS, Kim JA, Min BS. Antioxidant and Antidiabetic Activities of Flavonoid Derivatives from the Outer Skins of Allium cepa L. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:8797-8811. [PMID: 32603104 DOI: 10.1021/acs.jafc.0c02122] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The onion, known as the bulb onion or common onion, is not only a key ingredient in many tasty and healthy vegetarian meals but also many traditional medicines. Nine new flavonoids [cepaflavas A, B (5, 6), cepadials A-D (7-9 and 14), and cepabiflas A-C (10-12)] and six known compounds (1-4, 13, 15) were obtained from the outer skins of Allium cepa L. Among them, compounds 5, 6, and 9 might be artificial products formed during extraction and isolation. New compounds were structurally elucidated using various spectroscopy/spectrometry techniques, including NMR and HRMS, and computational methods. Their absolute configurations were determined using time-dependent density functional theory calculations, combined with ECD spectroscopy, optical rotation calculation, and statistical procedures (CP3 and DP4 analysis). The free radical scavenging assays revealed that the new compounds 10-12 possessed considerable antioxidant activities with IC50 values of 4.25-8.88 and 7.12-8.14 μM against DPPH and ABTS•+, respectively. Compounds 13-15 showed substantial inhibitory activities against both α-glucosidase and protein tyrosine phosphatase 1B (PTP1B), with IC50 values of 0.89-6.80 and 1.13-6.82 μM, respectively. On the basis of molecular docking studies, 13 and 15 were predicted to have high binding capacity and strong affinity toward the active site of PTP1B.
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Affiliation(s)
- Ngoc Khanh Vu
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Chung Sub Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Manh Tuan Ha
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Quynh-Mai Thi Ngo
- College of Pharmacy, Hai Phong University of Medicine and Pharmacy, 72A Nguyen Binh Khiem, Hai Phong 180000, Viet Nam
| | - Se Eun Park
- Department of Food and Life Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Haeun Kwon
- Department of Biosystems and Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, Republic of Korea
| | - Dongho Lee
- Department of Biosystems and Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, Republic of Korea
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
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Agrawal PK, Agrawal C, Agrawal S. Carbon-13 NMR Chemical Shift of Methyl Group: A Useful Parameter for Structural Analysis of C-Methylated Flavonoids. Nat Prod Commun 2019. [DOI: 10.1177/1934578x0600101108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The 13C NMR resonances corresponding to the C-Me group of C-6 and/or C-8 C-methylated-flavonoids absorb between 6.7–10.0 ppm and typically between 6.7–8.7 ppm. A comparative 13C NMR study reflects that the 13C NMR chemical shifts reported for 6-hydroxy-5-methyl-3′,4′,5′-trimethoxyaurone-4-O-α-L-rhamnoside from Pterocarpus santalinus and 8-C-methyl-5,7,2′,4′- tetramethoxyflavanone from Terminalia alata are inconsistent with the assigned structures, and therefore need reconsideration.
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Affiliation(s)
- Pawan K. Agrawal
- Natural Product Inc., 7963 Anderson Park Lane, Westerville, OH 43081, USA
| | - Chandan Agrawal
- Natural Product Inc., 7963 Anderson Park Lane, Westerville, OH 43081, USA
| | - Shravan Agrawal
- Natural Product Inc., 7963 Anderson Park Lane, Westerville, OH 43081, USA
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Kang HR, Lee D, Eom HJ, Lee SR, Lee KR, Kang KS, Kim KH. Identification and mechanism of action of renoprotective constituents from peat moss Sphagnum palustre in cisplatin-induced nephrotoxicity. J Funct Foods 2016. [DOI: 10.1016/j.jff.2015.11.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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Killeen DP, van Klink JW, Smallfield BM, Gordon KC, Perry NB. Herbicidal β-triketones are compartmentalized in leaves of Leptospermum species: localization by Raman microscopy and rapid screening. THE NEW PHYTOLOGIST 2015; 205:339-349. [PMID: 25103692 DOI: 10.1111/nph.12970] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 07/07/2014] [Indexed: 06/03/2023]
Abstract
The New Zealand mānuka shrub, Leptospermum scoparium, and the Australian L. morrisonii produce herbicidal β-triketones in their leaves. The localization of these potential self-toxicants has not been proven. We investigated the localization of these compounds in leaves using Raman microscopy. The results are presented as heat maps derived from principal component analysis (PCA) of the Raman spectra from sampling grids of leaf sections. This approach used undirected, data-driven analysis to qualitatively distinguish localized plant chemistry. The presence of β-triketones and lipophilic flavonoids was confirmed by GC-MS and (1) H NMR spectroscopy. Grandiflorone was compartmentalized within the leaf oil glands of L. morrisonii. Leptospermum scoparium also contained high concentrations of grandiflorone, previously reported as only a trace component in essential oils, localized in the oil glands in the leaves of varieties from diverse geographical locations. Raman microscopy was used to probe the chemistry of oil glands in several ornamental mānuka varieties, revealing high concentrations of bioactive flavonoids localized in these glands. The compartmentalization of β-triketones within oil glands inside leaves of Leptospermum shrubs may defend the plants against herbicidal activity.
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Affiliation(s)
- Daniel P Killeen
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand; MacDiarmid Institute for Advanced Materials and Nanotechnology, University of Otago, Dunedin, New Zealand
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Miyake H, Nishino S, Sasaki M. Facile Synthesis of 2,3-Diacetoxyflavanones from 3-Aminoflavones. CHEM LETT 2009. [DOI: 10.1246/cl.2009.952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
Flavanones are one of the most interesting naturally occurring flavonoids in view of their structural pattern as well as biological and pharmacological potentials. The present review deals with natural flavanones reported from 1998 to mid 2007, along with their biological and pharmacological activities. The review includes more than 160 new naturally occurring flavanones from 135 references. The reported flavonoids belong to thirty-six plant families.
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Affiliation(s)
- Goutam Brahmachari
- Natural Products Laboratory, Department of Chemistry, Visva-Bharati University, Santiniketan-731 235, West Bengal, India
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Yoo NH, Jang DS, Yoo JL, Lee YM, Kim YS, Cho JH, Kim JS. Erigeroflavanone, a flavanone derivative from the flowers of Erigeron annuus with protein glycation and aldose reductase inhibitory activity. JOURNAL OF NATURAL PRODUCTS 2008; 71:713-715. [PMID: 18298080 DOI: 10.1021/np070489a] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A novel 2,3-dioxygenated flavanone, erigeroflavanone ( 1), as well as eight known flavonoids and two known gamma-pyranone derivatives, were isolated from an ethyl acetate-soluble extract of the flowers of Erigeron annuus. The structure of compound 1 was elucidated by interpretation of spectroscopic data. All of the isolates were subjected to in vitro bioassays to evaluate their inhibitory activity against advanced glycation end products formation and rat lens aldose reductase.
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Affiliation(s)
- Nam Hee Yoo
- Department of Herbal Pharmaceutical Development, Korea Institute of Oriental Medicine, Daejeon 305-811, Korea
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Nakagawa-Goto K, Lee KH. Anti-AIDS agents 68. The first total synthesis of a unique potent anti-HIV chalcone from genus Desmos. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.09.110] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Mustafa K, Perry NB, Weavers RT. Lipophilic C-methylflavonoids with no B-ring oxygenation in Metrosideros species (Myrtaceae). BIOCHEM SYST ECOL 2005. [DOI: 10.1016/j.bse.2005.02.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Sinkkonen J, Liimatainen J, Karonen M, Pihlaja K. A new dihydroflavonol from Pinus sylvestris L. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2005; 43:348-349. [PMID: 15674796 DOI: 10.1002/mrc.1552] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A novel dihydroflavonol, C-6,O-7-dimethylaromadendrin, was isolated from a 70% aqueous acetone extract of pine (Pinus sylvestris L.) bark. Its structure was determined by high-resolution negative fast atom bombardment mass spectrometry and NMR spectroscopy. The complete assignment of proton and carbon signals was achieved by 2D NMR experiments: HSQC, HMBC, DQF-COSY and NOESY.
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Affiliation(s)
- Jari Sinkkonen
- Structural Chemistry Group, Department of Chemistry, University of Turku, Vatselankatu 2, FI-20014 Turku, Finland
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