1
|
Sawektreeratana N, Krachangchaeng C, Pittayanurak P, Betterley NM, Chairoungdua A, Wongpan A, Panvongsa W, Janthakit P, Nalaoh P, Promarak V, Nuntasaen N, Reutrakul V, Kuhakarn C, Hongthong S. Mallotumides A-C: Potent Cytotoxic Cycloheptapeptides from the Roots of Mallotus spodocarpus. Org Lett 2023; 25:8183-8187. [PMID: 37902783 DOI: 10.1021/acs.orglett.3c02641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
The structures of potent cytotoxic cycloheptapeptides, mallotumides A-C (1-3, respectively) isolated from the roots of Mallotus spodocarpus Airy Shaw, were elucidated by extensive spectroscopic analysis. The absolute configuration of 1 was determined by single-crystal X-ray crystallographic data. All three cycloheptapeptides exhibited potent cytotoxicity against various cancer cell lines with IC50 values ranging from 0.60 to 4.02 nM.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Wittaya Panvongsa
- Department of Tropical Nutrition and Food Science, Faculty of Tropical Medicine, Mahidol University, Ratchawithi Road, Bangkok 10400, Thailand
| | - Pattarapapa Janthakit
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
| | - Phattananawee Nalaoh
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Vinich Promarak
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
| | | | | | | | - Sakchai Hongthong
- Division of Chemistry, Faculty of Science and Technology, Rajabhat Rajanagarindra University, Chachoengsao 24000, Thailand
| |
Collapse
|
2
|
Shi Q, Yu W, Li J, Feng S. The mechanism leading to color differences between purple-red and green partridge tea leaves. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:1334-1341. [PMID: 36153639 DOI: 10.1002/jsfa.12227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 08/18/2022] [Accepted: 09/24/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Partridge tea (Mallotus oblongifolius) is used as an important beverage and medical plant in Hainan province of China. Although some information about the morphology, cytology, and genetics of partridge tea has been reported in the literature, knowledge about this plant is still very limited. The leaves are the most important part for every tea plant, with a major role in nutrition and other functions. The leaves of different cultivars of partridge tea are different in colors and functions. The molecular mechanism of color formation of partridge tea leaf is still unclear. We reveal the molecular mechanism of the color difference between purple-red and green partridge tea leaves through metabolome and transcriptome analysis. RESULTS We identified 665 compounds in the two partridge tea cultivars through metabolome analysis. Among these compounds, the content of 324 differed between the two cultivars. We also annotated 50 042 unigenes in the two cultivars by transcriptome analysis; 9665 unigenes were expressed differently between the two cultivars. Using an integrated analysis of the metabolome and transcriptome data, we found that the compounds and genes involved in anthocyanin biosynthesis were up-regulated in the purple-red leaves, compared with the green leaves. CONCLUSION Our results showed that the anthocyanin biosynthesis pathway genes were up-regulated, which resulted in the up-regulation of the anthocyanin, making the leaf color purple-red. Our study reveals the molecular mechanism of the color difference between purple-red and green partridge tea, and lays a foundation for the genetic breeding of partridge tea genetic and the utilization of its volatile components. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Qi Shi
- College of Horticulture, Hainan University, Haikou, People's Republic of China
| | - Wengang Yu
- College of Horticulture, Hainan University, Haikou, People's Republic of China
| | - Juanling Li
- College of Forestry, Hainan University, Haikou, People's Republic of China
| | - Shipeng Feng
- College of Tropical Crops, Hainan University, Haikou, People's Republic of China
| |
Collapse
|
3
|
UHPLC-HRMS Analysis of Fagus sylvatica (Fagaceae) Leaves: A Renewable Source of Antioxidant Polyphenols. Antioxidants (Basel) 2021; 10:antiox10071140. [PMID: 34356373 PMCID: PMC8301150 DOI: 10.3390/antiox10071140] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/15/2021] [Accepted: 07/16/2021] [Indexed: 12/14/2022] Open
Abstract
European beech (Fagus sylvatica L.) is a deciduous tree, widely distributed in Europe and largely appreciated for its wood and nutritive nuts. Beech leaf also enjoys food use as salad, but an understanding of its nutraceutical value is still far from being achieved. Indeed, and also taking into account beech leaf as a consistent biomass residue available beechwood production and use, it needs to be explored as a valuable renewable specialized source of bioactive molecules. In this context, an untargeted ultra-high-performance liquid chromatography hyphenated with high resolution mass spectrometry (UHPLC-HRMS) approach was favorably applied to a beech leaf alcoholic extract, which also was evaluated for its antiradical capability (by means of assays based on 2,2-diphenyl-1-picrylhydrazyl (DPPH) and [2,2’-azinobis-(3-ethylbenzothiazolin-6-sulfonic acid)] (ABTS) radical cation) and its ferric ion reducing power. Redox mitochondrial activity towards Caco-2 cells paved the way to explore the extract’s capability to inhibit intracellular Reactive Oxygen Species (ROS) using 2’,7’dichlorofluorescin diacetate (DCFH-DA) assay. Hydroxycinnamoyl derivatives, mainly belonging to the chlorogenic acid class, and flavonoids were the main constituents. Uncommon flavanone C-glycosides were also found, together with a plentiful flavonol diversity. Cell-free and cell-based assays highlight its dose-dependent antioxidant efficacy, providing a foundation for further investigation of beech leaf constituents and its valorization and use as a reservoir of bioactive natural products with potential nutraceutical applications.
Collapse
|
4
|
Elshamy AI, Mohamed TA, Ibrahim MAA, Atia MAM, Yoneyama T, Umeyama A, Hegazy MEF. Two novel oxetane containing lignans and a new megastigmane from Paronychia arabica and in silico analysis of them as prospective SARS-CoV-2 inhibitors. RSC Adv 2021; 11:20151-20163. [PMID: 35479905 PMCID: PMC9033657 DOI: 10.1039/d1ra02486h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/15/2021] [Indexed: 12/22/2022] Open
Abstract
The chemical characterization of the extract of the aerial parts of Paronychia arabica afforded two oxetane containing lignans, paronychiarabicine A (1) and B (2), and one new megastigmane, paronychiarabicastigmane A (3), alongside a known lignan (4), eight known phenolic compounds (5–12), one known elemene sesquiterpene (13) and one steroid glycoside (14). The chemical structures of the isolated compounds were constructed based upon the HRMS, 1D, and 2D-NMR results. The absolute configurations were established via NOESY experiments as well as experimental and TDDFT-calculated electronic circular dichroism (ECD). Utilizing molecular docking, the binding scores and modes of compounds 1–3 towards the SARS-CoV-2 main protease (Mpro), papain-like protease (PLpro), and RNA-dependent RNA polymerase (RdRp) were revealed. Compound 3 exhibited a promising docking score (−9.8 kcal mol−1) against SARS-CoV-2 Mpro by forming seven hydrogen bonds inside the active site with the key amino acids. The reactome pathway enrichment analysis revealed a correlation between the inhibition of GSK3 and GSK3B genes (identified as the main targets of megastigmane treatment) and significant inhibition of SARS-CoV-1 viral replication in infected Vero E6 cells. Our results manifest a novel understanding of genes, proteins and corresponding pathways against SARS-CoV-2 infection and could facilitate the identification and characterization of novel therapeutic targets as treatments of SARS-CoV-2 infection. The hydromethanolic extract of Paronychia arabica aerial parts afforded two oxetane containing lignans, paronychiarabicine A (1) and B (2), and one new megastigmane, paronychiarabicastigmane A (3), alongside a known secondary metabolites (4–14).![]()
Collapse
Affiliation(s)
- Abdelsamed I Elshamy
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University Yamashiro-cho Tokushima 770-8514 Japan.,Chemistry of Natural Compounds Department, National Research Centre Dokki Giza 12622 Egypt
| | - Tarik A Mohamed
- Chemistry of Medicinal Plants Department, National Research Centre 33 El-Bohouth St., Dokki Giza 12622 Egypt +20-233370931 +20-233371635
| | - Mahmoud A A Ibrahim
- Computational Chemistry Laboratory, Chemistry Department, Faculty of Science, Minia University Minia 61519 Egypt
| | - Mohamed A M Atia
- Molecular Genetics and Genome Mapping Laboratory, Genome Mapping Department, Agricultural Genetic Engineering Research Institute (AGERI), Agricultural Research Center (ARC) Giza 12619 Egypt
| | - Tatsuro Yoneyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University Yamashiro-cho Tokushima 770-8514 Japan
| | - Akemi Umeyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University Yamashiro-cho Tokushima 770-8514 Japan
| | - Mohamed-Elamir F Hegazy
- Chemistry of Medicinal Plants Department, National Research Centre 33 El-Bohouth St., Dokki Giza 12622 Egypt +20-233370931 +20-233371635.,Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University Staudinger Weg 5 55128 Mainz Germany
| |
Collapse
|
5
|
Gao HM, Wang T, Hu HT, Yue JN, Shen T, Lou HX, Wang XN. Three new triterpenoids from Mallotus macrostachyus. Fitoterapia 2020; 142:104498. [PMID: 32058053 DOI: 10.1016/j.fitote.2020.104498] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/06/2020] [Accepted: 02/07/2020] [Indexed: 11/25/2022]
Abstract
Three new triterpenoids, mallomacrostins A-C (1-3), and 11 known ones (4-14) were obtained from the twigs and leaves of Mallotus macrostachyus. Mallomacrostin A possessed a new trinor-D:B-friedobaccharane skeleton. The structures of the new compounds were elucidated on the basis of extensive spectroscopic techniques including HR-ESIMS and NMR and the structure of 1 was confirmed by single crystal X-ray diffraction analysis. Spectroscopic data of the known compound 4 were provided for the first time. Compounds 2 and 10 exhibited significant anti-inflammatory activity by inhibiting LPS-induced release of nitric oxide with IC50 of 70.0 μM and 14.0 μM, respectively.
Collapse
Affiliation(s)
- Hui-Min Gao
- Department of Natural Product Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, PR China
| | - Tian Wang
- Department of Natural Product Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, PR China
| | - Hai-Tao Hu
- Department of Natural Product Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, PR China
| | - Jia-Nan Yue
- Department of Natural Product Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, PR China
| | - Tao Shen
- Department of Natural Product Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, PR China
| | - Hong-Xiang Lou
- Department of Natural Product Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, PR China
| | - Xiao-Ning Wang
- Department of Natural Product Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, PR China.
| |
Collapse
|
6
|
Yan W, Li J, Zheng D, Friedman C, Wang H. Analysis of genetic population structure and diversity in Mallotus oblongifolius using ISSR and SRAP markers. PeerJ 2019; 7:e7173. [PMID: 31275758 PMCID: PMC6590392 DOI: 10.7717/peerj.7173] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 05/23/2019] [Indexed: 11/20/2022] Open
Abstract
Background Mallotus oblongifolius, an evergreen shrub endemic to Hainan Island, China, is important both medicinally and economically. Due to its special medicinal significance and the continuing rise of market demand, its populations in the wild have been subject to long-term illegal and unrestrained collection. Hence, an evaluation of genetic variability is essential for the conservation and genetic reserve development of this species. Methods Sequence-related amplified polymorphism (SRAP) and inter-simple sequence repeat (ISSR) markers were employed to assess the genetic diversity and genetic structure of 20 natural populations of M. oblongifolius growing in different eco-geographical regions of Hainan Island, China. Results We revealed a considerable genetic diversity (h = 0.336, I = 0.5057, SRAP markers; h = 0.3068, I = 0.4657, ISSR markers) and weak genetic differentiation (Gst = 0.2764 for SRAP, Gst = 0.2709 for ISSR) with the same gene flow (Nm = 1.3092 for SRAP, Nm = 1.346 for ISSR) among the M. oblongifolius populations. The Mantel Test showed that the distribution of genetic variation among populations could not be explained by the pronounced geographical distances (r = 0.01255, p = 0.5538). All results of the Unweighted Pair Group Method with Arithmetic Mean (UPGMA), Neighbor-joining (NJ), Principal Coordinate Analysis (PCoA) and Bayesian analyses supported a habitat-specific genetic clustering model for M. oblongifolius, indicating a local adaptive divergence for the studied populations. Discussion We suggested that the habitat fragmentation and specificity for M. oblongifolius populations weakened the natural gene flow and promoted an adaptation to special habitats, which was the main reason for local adaptive divergence among M. oblongifolius.
Collapse
Affiliation(s)
- Wuping Yan
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, China
| | - Juanling Li
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, China
| | - Daojun Zheng
- Institute of Tropical Horticulture, Hainan Academy of Agricultural Sciences, Haikou, China
| | - Cynthia Friedman
- The Department of Biological and Environmental Sciences, Concordia University of Edmonton, Edmonton, Canada
| | - Huafeng Wang
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, China
| |
Collapse
|
7
|
Eight new glycosides with hepatoprotective activity isolated from the aerial parts of Morinda parvifolia. Bioorg Chem 2019; 87:867-875. [DOI: 10.1016/j.bioorg.2018.11.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 11/27/2018] [Accepted: 11/29/2018] [Indexed: 02/08/2023]
|
8
|
Li H, Wang L, Luo Y. Composition Analysis by UPLC-PDA-ESI (-)-HRMS and Antioxidant Activity Using Saccharomyces cerevisiae Model of Herbal Teas and Green Teas from Hainan. Molecules 2018; 23:E2550. [PMID: 30301226 PMCID: PMC6222971 DOI: 10.3390/molecules23102550] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 09/30/2018] [Accepted: 10/03/2018] [Indexed: 11/24/2022] Open
Abstract
Different teas from everywhere are very useful and have been extensively studied. We studied the antioxidant activity of herbal teas and green teas from Hainan, Mallotus oblongifolius Muell. Arg. (MO), Ilex kudingcha C.J. Tseng (KD), Camellia sinensis var. assamica (J. W. Mast.) Kitam. Hainan Dayezhong (DY), and Camellia sinensis (L.) O. Ktze. (produced from Hainan Baisha (BS)). The total phenol content and total flavonoid content from water extracts, resin extracts and fractions of herbal teas and green teas were compared. Later, eight fractions of herbal teas and green teas were subjected to UPLC-PDA-ESI-(-)-HRMS. We determined 1-diphenyl -2-picryl-hydrazyl radical and hydroxyl free radical scavenging activity by electron paramagnetic resonance spectroscopy. We subjected Saccharomyces cerevisiae to hydrogen peroxide, stress and evaluated antioxidant activity of herbal teas and green teas in cellulo. The experiment identified more than 14 potential antioxidant compounds from herbal teas and green teas. The herbal teas and green teas had a clearance rate higher than ferulic acid at the same concentrations. MO best reduced intracellular oxidation levels and increased catalase, glutathione reductase activities, glutathione reduced and glutathione oxidized content. KD had the highest cell survival rate and reduced cell lipid peroxidation. DY best improved superoxide dismutase activity and BS was the most active in the halo test. Therefore, we concluded that MO had stronger antioxidant activity than other herbal teas and green teas from Hainan, especially, which reduce S. cerevisiae oxidative stress under H₂O₂ stress.
Collapse
Affiliation(s)
- Hua Li
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan, 570228, China.
| | - Lanying Wang
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan, 570228, China.
| | - Yanping Luo
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan, 570228, China.
| |
Collapse
|
9
|
Du B, Zhao F, Zhang H, Feng X, Xing J, Han Z, Gao Z, Tu P, Chai X. Asprenols A-H, phenolic constituents from the stems of Ilex asprella. Fitoterapia 2018; 129:220-225. [PMID: 30031114 DOI: 10.1016/j.fitote.2018.07.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/16/2018] [Accepted: 07/18/2018] [Indexed: 02/06/2023]
Abstract
Encouraged by the in vivo anti-inflammatory effect of aqueous extract of Ilex asprella stems, a further phytochemical investigation on I. asprella stems oriented by the in vitro NO production inhibition in RAW264.7 cells was conducted, which led to the isolation of eight new phenolic constituents, namely asprenols A-H (1-8), together with 12 known ones (9-20). The structures of the new compounds were established by extensive spectroscopic data analyses of HR-ESI-MS, IR, UV, and 1D and 2D NMR, and the absolute configurations were determined by comparison of experimental and calculated ECD analyses. All isolated were evaluated for the inhibition against NO production in RAW 264.7 cells, and several compounds showed moderate inhibitory effect.
Collapse
Affiliation(s)
- Bingzhao Du
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, PR China
| | - Feng Zhao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, PR China
| | - Hexin'ge Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, PR China
| | - Xiao Feng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, PR China
| | - Jianyong Xing
- SANJIU Medical & Pharmaceutical Co., Ltd, Shenzhen 518029, PR China
| | - Zhengzhou Han
- SANJIU Medical & Pharmaceutical Co., Ltd, Shenzhen 518029, PR China
| | - Zengping Gao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, PR China.
| | - Pengfei Tu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, PR China
| | - Xingyun Chai
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, PR China.
| |
Collapse
|
10
|
Garazd YL, Garazd MM. Natural Dibenzo[b,d]Pyran-6-Ones: Structural Diversity and Biological Activity. Chem Nat Compd 2016. [DOI: 10.1007/s10600-016-1536-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
11
|
Tian LW, Feng Y, Tran TD, Shimizu Y, Pfeifer T, Forster PI, Quinn RJ. Tyrosyl-DNA Phosphodiesterase I Inhibitors from the Australian Plant Macropteranthes leichhardtii. JOURNAL OF NATURAL PRODUCTS 2015; 78:1756-1760. [PMID: 26149757 DOI: 10.1021/acs.jnatprod.5b00211] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Mass-directed isolation of the CH2Cl2/MeOH extract from the bark of an Australian plant, Macropteranthes leichhardtii, resulted in the purification of a new phenylpropanoid glucoside, macropteranthol (1), together with four known analogues (2-5). The structure of compound 1 was elucidated by NMR and MS data analyses and quantum chemical calculations. Compounds 3 and 5 showed inhibitory activity against tyrosyl-DNA phosphodiesterase I with IC50 values of ∼1.0 μM.
Collapse
Affiliation(s)
- Li-Wen Tian
- †Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia
| | - Yunjiang Feng
- †Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia
| | - Trong D Tran
- †Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia
| | - Yoko Shimizu
- ‡Centre for Drug Research and Development, Vancouver, BC 2405, Canada
| | - Tom Pfeifer
- ‡Centre for Drug Research and Development, Vancouver, BC 2405, Canada
| | | | - Ronald J Quinn
- †Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia
| |
Collapse
|
12
|
Clark BR, Pramanick S, Arancon N, Borris RP. Unusual Flavonoid Glycosides from the Hawaiian Tree Metrosideros polymorpha. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Metrosideros polymorpha is a highly variable and widely-distributed tree native to the Hawaiian islands. We describe here the isolation of two new gossypetin derivatives and three new C-methylated flavonol glycosides, which are highly uncommon and may prove to be useful chemotaxonomic markers for the species. In addition, a wide range of known flavonoid glycosides, chalcones, and terpenoids were isolated alongside the new compounds.
Collapse
Affiliation(s)
| | - Swapan Pramanick
- College of Pharmacy, University of Hawaii at Hilo, HI 96720, USA
| | - Norman Arancon
- College of Agriculture, Forestry & Natural Resource Management, University of Hawaii at Hilo, HI 96720, USA
| | - Robert P. Borris
- College of Pharmacy, University of Hawaii at Hilo, HI 96720, USA
- Current address: School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| |
Collapse
|
13
|
Nguyen THT, Kim Tuyen Pham N, Pudhom K, Hansen PE, Nguyen KPP. Structure elucidation of four new megastigmanes from Sonneratia ovata Backer. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2014; 52:795-802. [PMID: 25169572 DOI: 10.1002/mrc.4132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 07/26/2014] [Accepted: 07/30/2014] [Indexed: 06/03/2023]
Affiliation(s)
- Thi Hoai Thu Nguyen
- Department of Basic Science, University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam
| | | | | | | | | |
Collapse
|
14
|
Nomoto Y, Sugimoto S, Matsunami K, Otsuka H. Hirtionosides A-C, gallates of megastigmane glucosides, 3-hydroxyoctanoic acid glucosides and a phenylpropanoid glucoside from the whole plants of Euphorbia hirta. J Nat Med 2012; 67:350-8. [PMID: 22836810 DOI: 10.1007/s11418-012-0692-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 07/08/2012] [Indexed: 11/28/2022]
Abstract
From the 1-BuOH-soluble fraction of a MeOH extract of Euphorbia hirta, collected in the Okinawa islands, three new megastigmane glucoside gallates, named hirtionosides A-C, 3-hydroxyoctanoic acid glucosides and a phenylpropanoid glucoside were isolated along with 15 known compounds. The structures of the new compounds were elucidated by detailed analysis of physical data, including one- and two-dimensional NMR spectra, and those of known compounds were determined by comparison of physico-chemical data with those reported in the literature. The absolute structures of the megastigmanes were determined by comparison of NMR data and Cotton effects in the CD spectra. The modified Mosher's method was applied to determine the absolute structure of the chiral center in 3-hydroxyoctanoic acid. The DPPH radical-scavenging properties of megastigmane glucoside gallates were assayed and, as expected, they showed moderate activity.
Collapse
Affiliation(s)
- Yuya Nomoto
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | | | | | | |
Collapse
|
15
|
da Silva DB, Alves Fernandes EF, de Santis Ferreira L, Callejon DR, Guaratini T, Lopes JNC, Meyre-Silva C, Filho VC, Lopes NP. Megastigmanes from Aleurites moluccana (L.) Willd. (Euphorbiaceae). BIOCHEM SYST ECOL 2012. [DOI: 10.1016/j.bse.2011.09.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
16
|
Li Y, Yu S, Liu D, Proksch P, Lin W. Inhibitory effects of polyphenols toward HCV from the mangrove plant Excoecaria agallocha L. Bioorg Med Chem Lett 2011; 22:1099-102. [PMID: 22196120 DOI: 10.1016/j.bmcl.2011.11.109] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Revised: 11/25/2011] [Accepted: 11/28/2011] [Indexed: 12/13/2022]
Abstract
Four new polyphenols namely excoecariphenols A-D (1-4) were isolated from the Chinese mangrove plant Excoecaria agallocha L. together with 23 known phenolic compounds. The structures of new compounds were elucidated on the basis of extensive spectroscopic analyses including IR, MS, NMR, and CD data. Excoecariphenols A and B presented as the unusual flavane-based 1-thioglycosides. Part of the isolated polyphenols were tested against hepatitis C NS3-4A protease and HCV RNA in huh 7.5 cells. Excoecariphenol D, corilagin, geraniin, and chebulagic acid showed potential inhibition toward HCV NS3-4A protease with IC(50) values in a range of 3.45-9.03μM, while excoecariphenol D and corilagin inhibited HCV RNA in huh 7.5 cells significantly. A primary structure-activity relationship (SAR) is discussed.
Collapse
Affiliation(s)
- Yongxin Li
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, PR China
| | | | | | | | | |
Collapse
|
17
|
Huang YL, Tsujita T, Tanaka T, Matsuo Y, Kouno I, Li DP, Nonaka GI. Triterpene hexahydroxydiphenoyl esters and a quinic acid purpurogallin carbonyl ester from the leaves of Castanopsis fissa. PHYTOCHEMISTRY 2011; 72:2006-2014. [PMID: 21831402 DOI: 10.1016/j.phytochem.2011.07.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Revised: 05/17/2011] [Accepted: 07/05/2011] [Indexed: 05/31/2023]
Abstract
Triterpene hexahydroxydiphenoyl (HHDP) esters have only been isolated from Castanopsis species, and the distribution of these esters in nature is of chemotaxonomical interest. In this study, the chemical constituents of the leaves of Castanopsis fissa were examined in detail to identify and isolate potential HHDP esters. Together with 53 known compounds, 3,4-di-O-galloyl-1-O-purpurogallin carbonyl quinic acid (1) and 3,24-(S)-HHDP-2α,3β,23,24-tetrahydroxytaraxastan-28,20β-olide (2) were isolated and their structures were elucidated by spectroscopic and chemical methods. The polyphenols of the leaves were mainly composed of galloyl quinic acids, triterpenes HHDP esters, ellagitannins and flavonol glycosides. In particular, the isolation yields of 1,3,4-trigalloyl quinic acid and compound 2 were 1.53% and 0.27%, respectively, from the fresh leaves. The presence of lipid soluble HHDP esters of oleanane-type triterpenes as one of the major metabolites is an important chemotaxonomical discovery. Lipase inhibition activities and ORAC values of the major constituents were compared. The triterpene HHDP ester showed moderate lipase inhibition activity and myricitrin gave the largest ORAC value.
Collapse
Affiliation(s)
- Yong-Lin Huang
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan
| | | | | | | | | | | | | |
Collapse
|
18
|
Yueli L, Liqun W, Haitao W, Lianbo L, Xinan Y. Comparison of anti–atherosclerotic effects of two different extracts from leaves of Mallotus furetianus. ASIAN PAC J TROP MED 2011; 4:878-82. [DOI: 10.1016/s1995-7645(11)60212-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Revised: 10/02/2011] [Accepted: 10/18/2011] [Indexed: 11/28/2022] Open
|
19
|
Zhu Q, Tang CP, Ke CQ, Wang W, Zhang HY, Ye Y. Sesquiterpenoids and phenylpropanoids from pericarps of Illicium oligandrum. JOURNAL OF NATURAL PRODUCTS 2009; 72:238-242. [PMID: 19159273 DOI: 10.1021/np8004979] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Four new merrillianin-type sesquiterpenes, oligandrumins A-D (1-4), two new seco-prezizaane-type sesquiterpenes, veranisatins D and E (5 and 6), and a new phenylpropane glycoside, oligandrumin E (7), were isolated from the ethanol extract of pericarps of Illicium oligandrum, together with six known sesquiterpenoids and two phenylpropanoids. Their structures were established on the basis of extensive spectroscopic analyses. The structures of 1 and 2 were further confirmed by single-crystal X-ray diffraction experiments. Anislactone B (13) and the erythro form of anethole glycol (14) were shown to attenuate the damage induced by H(2)O(2) in SH-SY5Y cells.
Collapse
Affiliation(s)
- Qin Zhu
- State Key Laboratory of Drug Research & Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu-Chong-Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People's Republic of China
| | | | | | | | | | | |
Collapse
|
20
|
Jiang L, Lu Y, He S, Pan Y, Sun C, Wu T. Preparative isolation and purification of two amides fromMallotus lianusCroiz by high-speed counter-current chromatography. J Sep Sci 2008; 31:3930-5. [DOI: 10.1002/jssc.200800396] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
21
|
ARFAN MOHAMMAD, AMIN HAZRAT, KARAMAĆ MAGDALENA, KOSIŃSKA AGNIESZKA, SHAHIDI FEREIDOON, WICZKOWSKI WIESŁAW, AMAROWICZ RYSZARD. ANTIOXIDANT ACTIVITY OF EXTRACTS OF MALLOTUS PHILIPPINENSIS FRUIT AND BARK. ACTA ACUST UNITED AC 2007. [DOI: 10.1111/j.1745-4522.2007.00086.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
22
|
Hsu FL, Yang LM, Chang SF, Wang LH, Hsu CY, Liu PC, Lin SJ. Biotransformation of gallic acid by Beauveria sulfurescens ATCC 7159. Appl Microbiol Biotechnol 2006; 74:659-66. [PMID: 17111140 DOI: 10.1007/s00253-006-0692-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2006] [Revised: 09/25/2006] [Accepted: 09/26/2006] [Indexed: 10/23/2022]
Abstract
Preparative-scale fermentation of gallic acid (3,4,5-trihydroxybenzoic acid) (1) with Beauveria sulfurescens ATCC 7159 gave two new glucosidated compounds, 4-(3,4-dihydroxy-6-hydroxymethyl-5-methoxy-tetrahydro-pyran-2-yloxy)-3-hydroxy-5-methoxy-benzoic acid (4), 3-hydroxy-4,5-dimethoxy-benzoic acid 3,4-dihydroxy-6-hydroxymethyl-5-methoxy-tetrahydro-pyran-2-yl ester (7), along with four known compounds, 3-O-methylgallic acid (2), 4-O-methylgallic acid (3), 3,4-O-dimethylgallic acid (5), and 3,5-O-dimethylgallic acid (6). The new metabolite genistein 7-O-beta-D-4''-O-methyl-glucopyranoside (8) was also obtained as a byproduct due to the use of soybean meal in the fermentation medium. The structural elucidation of the metabolites was based primarily on 1D-, 2D-NMR, and HRFABMS analyses. Among these compounds, 2, 3, and 5 are metabolites of gallic acid in mammals. This result demonstrated that microbial culture parallels mammalian metabolism; therefore, B. sulfurescens might be a useful tool for generating mammalian metabolites of related analogs of gallic acid (1) for complete structural identification and for further use in investigating pharmacological and toxicological properties in this series of compounds. In addition, a GRE (glucocorticoid response element)-mediated luciferase reporter gene assay was used to initially screen for the biological activity of the 6 compounds, 2-6 and 8, along with 1 and its chemical O-methylated derivatives 9-13. Among the 12 compounds tested, 11-13 were found to be significant, but less active than the reference compounds of methylprednisolone and dexamethasone.
Collapse
Affiliation(s)
- Feng-Lin Hsu
- Graduate Institute of Pharmacognosy Science, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing St., Taipei, 110, Taiwan
| | | | | | | | | | | | | |
Collapse
|
23
|
Matsunami K, Takamori I, Shinzato T, Aramoto M, Kondo K, Otsuka H, Takeda Y. Radical-Scavenging Activities of New Megastigmane Glucosides from Macaranga tanarius (L.) MUELL.-ARG. Chem Pharm Bull (Tokyo) 2006; 54:1403-7. [PMID: 17015977 DOI: 10.1248/cpb.54.1403] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Four new megastigmane glucosides, named macarangiosides A-D (2-5), together with mallophenol B, lauroside E, methyl brevifolin carboxylate, and hyperin and isoquercitrin as a mixture were isolated from the leaves of Macaranga tanarius (L.) MULL.-ARG. (Euphorbiaceae). Their structures were elucidated by spectroscopic and chemical analyses. Macarangioside A-C (2-4) and mallophenol B were galloylated on glucose moiety and possessed the potent 2,2-diphenyl-picrylhydrazyl (DPPH) radical-scavenging activity.
Collapse
Affiliation(s)
- Katsuyoshi Matsunami
- Department of Pharmacognosy, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | | | | | | | | | | | | |
Collapse
|
24
|
Akita H, Kishida M, Fujii M, Ida Y. Chemoenzymatic Synthesis of Naturally Occurring (Z)-3-Hexenyl 6-O-Glycosyl-β-D-glucopyranosides. HETEROCYCLES 2005. [DOI: 10.3987/com-05-10474] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|