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Chen CY, Hsu LY, Liu CM, Huang ST, Li WJ, Li HT. A New Homosesquiterpene from Cinnamomum reticulatum. Chem Nat Compd 2023. [DOI: 10.1007/s10600-023-03977-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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2
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Chen CY, Wu PC, Tsao NW, Tseng YH, Chu FH, Wang SY. Anti-Inflammatory Activities of Constituents from Cinnamomum insularimontanum Hayata Leaves and Their Mechanisms. PLANTS (BASEL, SWITZERLAND) 2022; 11:3252. [PMID: 36501293 PMCID: PMC9736326 DOI: 10.3390/plants11233252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Cinnamomum insularimontanum is an endemic species of Taiwan. Although most Cinnamomum plants have significant biological activity, the bioactivity investment of C. insularimontanum is rare. Since inflammation plays an important role in many diseases, anti-inflammatory compounds can be developed into healthcare products. Therefore, we first conducted a study on the anti-inflammatory activity of C. insularimontanum leaves. First, we examined the antiinflammation activity of essential oil from C. insularimontanum leaves, and it revealed potent anti-inflammatory activity. A total of 23 volatile compounds were identified in C. insularimontanum leaves' essential oil by using GC/MS analysis. Among them were 1,8-cineole (35.94%), α-eudesmol (6.17%), pinene (7.55%), sabinene (5.06%), and isobornyl acetate (4.81%). According to previous studies, 1,8-cineole might be an anti-inflammation principal compound of C. insularimontanum leaves. Next, the ethanolic extracts of C. insularimontanum leaves also exhibited good anti-inflammatory activity. Two bioactive compounds, isoburmanol (F1) and burmanol (F2), were isolated from the ethyl acetate soluble fraction by using the bioactivity-guided separation protocol and spectroscopic analysis. F1 was obtained from C. insularimontanum for the first time, and F2 was isolated for the first time from natural resources. Both F1 and F2 could inhibit the production of nitric oxide (NO), and the IC50 values were 14.0 μM and 43.8 μM, RAW 264.7 cells after induction of lipopolysaccharide. Furthermore, F1 and F2 also revealed significant inhabitation effects on iNOS and COX-2 protein expression. The anti-inflammation activity of F1 and F2 was different from the common pathway of inhibiting NF-κB. Both of them could inhibit the production of NO and PGE2 by directly inhibiting the AP-1 (c-Jun) protein and then inhibiting the downstream iNOS and COX-2. Although both F1 and F2 possessed significant anti-inflammatory activity, the activity of F1 was better than F2. Through molecular docking simulation analysis, the results show that F1 and F2 interact with AP-1, inhibit the binding of AP-1 to DNA, and cause AP-1 to fail to transcribe the related factors of inflammation. The binding ability of AP-1 and F1 was stronger than F2, and that is the reason why F1 exhibited better activities in both downstream proteins and inflammatory cytokines. Based on the results obtained in this study, the essential oil and F1 and F2 isolated from C. insularimontanum leaves have good anti-inflammatory activities, and it is expected to be used as a reference for the development of medical care products in the future.
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Affiliation(s)
- Chieh-Yin Chen
- Experimental Forest, College of Bio-Resources and Agriculture, National Taiwan University, Nantou County 55750, Taiwan
| | - Pei-Chen Wu
- Department of Forestry, National Chung Hsing University, Taichung 40227, Taiwan
| | - Nai-Wen Tsao
- Special Crop and Metabolome Discipline Cluster, Academy Circle Economy, National Chung Hsing University, Taichung 40227, Taiwan
| | - Yen-Hsueh Tseng
- Experimental Forest, College of Bio-Resources and Agriculture, National Taiwan University, Nantou County 55750, Taiwan
- Taiwan Forestry Research Institute, Taipei 10551, Taiwan
| | - Fang-Hua Chu
- School of Forestry and Resource Conservation, National Taiwan University, Taipei 10617, Taiwan
| | - Sheng-Yang Wang
- Department of Forestry, National Chung Hsing University, Taichung 40227, Taiwan
- Special Crop and Metabolome Discipline Cluster, Academy Circle Economy, National Chung Hsing University, Taichung 40227, Taiwan
- Agricultural Biotechnology Research Institute, Academia Sinica, Taipei 11529, Taiwan
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Wen Y, Rao L, Xu F, Li Y, Luo YX, Gong X, Wu RH, Zhang CR, Gan LS. Six pairs of phenylpropanoid enantiomers from Cinnamomum mollifolium. PHYTOCHEMISTRY 2022; 203:113348. [PMID: 35977600 DOI: 10.1016/j.phytochem.2022.113348] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 07/13/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
Six pairs of undescribed phenylglycerol benzoate enantiomers, (±)-mollifolines A-F, which can also be categorized into three two-pairs of epimers, were isolated from Cinnamomum mollifolium H. W. Li (Lauraceae). The relative configurations (threo or erythro) of the epimers were determined by conformational searching of the lowest energy conformers and analyses of the relationship between the dihedral angle of H-7'─C-7'─C-8'─H-8' and the 3JH-7', H-8' coupling constant according to the Karplus equation. Furthermore, intramolecular hydrogen bonds were proved to play an important role in stabilizing the lowest conformations by using reduced density gradient (RDG) method for noncovalent interactions. Chiral resolutions of these enantiomer pairs were accomplished by immobilized polysaccharide derivative-based chiral HPLC columns. Absolute configurations of the 12 optically pure isomers were finally determined by quantum chemical time-dependent density functional theory (TDDFT) calculations of their electronic circular dichroism (ECD) spectra.
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Affiliation(s)
- Yan Wen
- School of Biotechnology and Health Sciences, International Healthcare Innovation Institute, Wuyi University, Jiangmen, 529020, People's Republic of China
| | - Li Rao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, People's Republic of China
| | - Fan Xu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Yang Li
- School of Biotechnology and Health Sciences, International Healthcare Innovation Institute, Wuyi University, Jiangmen, 529020, People's Republic of China
| | - Yong-Xin Luo
- School of Biotechnology and Health Sciences, International Healthcare Innovation Institute, Wuyi University, Jiangmen, 529020, People's Republic of China
| | - Xu Gong
- School of Biotechnology and Health Sciences, International Healthcare Innovation Institute, Wuyi University, Jiangmen, 529020, People's Republic of China
| | - Ri-Hui Wu
- School of Biotechnology and Health Sciences, International Healthcare Innovation Institute, Wuyi University, Jiangmen, 529020, People's Republic of China
| | - Chuan-Rui Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, People's Republic of China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, People's Republic of China.
| | - Li-She Gan
- School of Biotechnology and Health Sciences, International Healthcare Innovation Institute, Wuyi University, Jiangmen, 529020, People's Republic of China; College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China.
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Farag MA, Kabbash EM, Mediani A, Döll S, Esatbeyoglu T, Afifi SM. Comparative Metabolite Fingerprinting of Four Different Cinnamon Species Analyzed via UPLC-MS and GC-MS and Chemometric Tools. Molecules 2022; 27:molecules27092935. [PMID: 35566284 PMCID: PMC9104325 DOI: 10.3390/molecules27092935] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 12/29/2022] Open
Abstract
The present study aimed to assess metabolites heterogeneity among four major Cinnamomum species, including true cinnamon (Cinnamomum verum) and less explored species (C. cassia, C. iners, and C. tamala). UPLC-MS led to the annotation of 74 secondary metabolites belonging to different classes, including phenolic acids, tannins, flavonoids, and lignans. A new proanthocyanidin was identified for the first time in C. tamala, along with several glycosylated flavonoid and dicarboxylic fatty acids reported for the first time in cinnamon. Multivariate data analyses revealed, for cinnamates, an abundance in C. verum versus procyandins, dihydro-coumaroylglycosides, and coumarin in C. cassia. A total of 51 primary metabolites were detected using GC-MS analysis encompassing different classes, viz. sugars, fatty acids, and sugar alcohols, with true cinnamon from Malaysia suggested as a good sugar source for diabetic patients. Glycerol in C. tamala, erythritol in C. iners, and glucose and fructose in C. verum from Malaysia were major metabolites contributing to the discrimination among species.
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Affiliation(s)
- Mohamed A. Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr El Aini St., Cairo 11562, Egypt
- Correspondence: (M.A.F.); (T.E.); (S.M.A.); Tel.: +11-202-2362245 (M.A.F.); +49-511-762-5589 (T.E.)
| | - Eman M. Kabbash
- Phytochemistry Department, National Organization for Drug Control and Research, Giza 12622, Egypt;
| | - Ahmed Mediani
- Institute of Systems Biology (INBIOSIS), Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, Malaysia;
| | - Stefanie Döll
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, 04103 Leipzig, Germany;
- Institute of Biodiversity, Friedrich Schiller University Jena, Dornburger-Str. 159, 07743 Jena, Germany
| | - Tuba Esatbeyoglu
- Department of Food Development and Food Quality, Institute of Food Science and Human Nutrition, Gottfried Wilhelm Leibniz University Hannover, Am KleinenFelde 30, 30167 Hannover, Germany
- Correspondence: (M.A.F.); (T.E.); (S.M.A.); Tel.: +11-202-2362245 (M.A.F.); +49-511-762-5589 (T.E.)
| | - Sherif M. Afifi
- Pharmacognosy Department, Faculty of Pharmacy, University of Sadat City, Sadat City 32897, Egypt
- Correspondence: (M.A.F.); (T.E.); (S.M.A.); Tel.: +11-202-2362245 (M.A.F.); +49-511-762-5589 (T.E.)
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5
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Chen CY, Wu MD, Yeh HC, Wu HM, Li HT, Cheng MJ. A Novel Biphenyl Derivative from Cinnamomum insulari-montanum. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03590-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Liu SL, Yang KH, Yang CW, Lee MY, Chuang YT, Chen YN, Chang FR, Chen CY, Chang HW. Burmannic Acid Inhibits Proliferation and Induces Oxidative Stress Response of Oral Cancer Cells. Antioxidants (Basel) 2021; 10:antiox10101588. [PMID: 34679723 PMCID: PMC8533162 DOI: 10.3390/antiox10101588] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/05/2021] [Accepted: 10/09/2021] [Indexed: 12/13/2022] Open
Abstract
Burmannic acid (BURA) is a new apocarotenoid bioactive compound derived from Indonesian cinnamon; however, its anticancer effect has rarely been investigated in oral cancer cells. In this investigation, the consequences of the antiproliferation of oral cancer cells effected by BURA were evaluated. BURA selectively suppressed cell proliferation of oral cancer cells (Ca9-22 and CAL 27) but showed little cytotoxicity to normal oral cells (HGF-1). In terms of mechanism, BURA perturbed cell cycle distribution, upregulated mitochondrial superoxide, induced mitochondrial depolarization, triggered γH2AX and 8-hydroxy-2-deoxyguanosine DNA damage, and induced apoptosis and caspase 3/8/9 activation in oral cancer cells. Application of N-acetylcysteine confirmed oxidative stress as the critical factor in promoting antiproliferation, apoptosis, and DNA damage in oral cancer cells.
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Affiliation(s)
- Su-Ling Liu
- Experimental Forest College of Bioresources and Agriculture, National Taiwan University, Zhushan Township, Nantou County 55750, Taiwan;
| | - Kun-Han Yang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.-H.Y.); (C.-W.Y.); (F.-R.C.)
| | - Che-Wei Yang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.-H.Y.); (C.-W.Y.); (F.-R.C.)
| | - Min-Yu Lee
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (M.-Y.L.); (Y.-T.C.); (Y.-N.C.)
| | - Ya-Ting Chuang
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (M.-Y.L.); (Y.-T.C.); (Y.-N.C.)
| | - Yan-Ning Chen
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (M.-Y.L.); (Y.-T.C.); (Y.-N.C.)
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (K.-H.Y.); (C.-W.Y.); (F.-R.C.)
| | - Chung-Yi Chen
- Department of Nutrition and Health Sciences, School of Medical and Health Sciences, Fooyin University, Kaohsiung 83102, Taiwan
- Correspondence: (C.-Y.C.); (H.-W.C.); Tel.: +886-7-781-1151 (ext. 6200) (C.-Y.C.); +886-7-312-1101 (ext. 2691) (H.-W.C.)
| | - Hsueh-Wei Chang
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (M.-Y.L.); (Y.-T.C.); (Y.-N.C.)
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- Correspondence: (C.-Y.C.); (H.-W.C.); Tel.: +886-7-781-1151 (ext. 6200) (C.-Y.C.); +886-7-312-1101 (ext. 2691) (H.-W.C.)
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7
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A Novel Cyclopropanoid from Cinnamomum osmophloeum. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03493-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Liu SL, Kao CL, Yeh HC, Li HT, Chen CY. A New β-Ionone from Cinnamomum burmanni. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03498-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Yang CL, Wu HC, Hwang TL, Lin CH, Cheng YH, Wang CC, Kan HL, Kuo YH, Chen IS, Chang HS, Lin YC. Anti-Inflammatory and Antibacterial Activity Constituents from the Stem of Cinnamomum validinerve. Molecules 2020; 25:molecules25153382. [PMID: 32722482 PMCID: PMC7435785 DOI: 10.3390/molecules25153382] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/13/2020] [Accepted: 07/23/2020] [Indexed: 12/19/2022] Open
Abstract
One new dibenzocycloheptene, validinol (1), and one butanolide firstly isolated from the natural source, validinolide (2), together with 17 known compounds were isolated from the stem of Cinnamomum validinerve. Among the isolates, lincomolide A (3), secosubamolide (7), and cinnamtannin B1 (19) exhibited potent inhibition on both superoxide anion generation (IC50 values of 2.98 ± 0.3 µM, 4.37 ± 0.38 µM, and 2.20 ± 0.3 µM, respectively) and elastase release (IC50 values of 3.96 ± 0.31 µM, 3.04 ± 0.23 µM, and 4.64 ± 0.71 µM, respectively) by human neutrophils. In addition, isophilippinolide A (6), secosubamolide (7), and cinnamtannin B1 (19) showed bacteriostatic effects against Propionibacterium acnes in in vitro study, with minimal inhibitory concentration (MIC) values at 16 μg/mL, 16 μg/mL, and 500 μg/mL, respectively. Further investigations using the in vivo ear P. acnes infection model showed that the intraperitoneal administration of the major component cinnamtannin B1 (19) reduced immune cell infiltration and pro-inflammatory cytokines TNF-α and IL-6 at the infection sites. The results demonstrated the potential of cinnamtannin B1 (19) for acne therapy. In summary, these results demonstrated the anti-inflammatory potentials of Formosan C. validinerve during bacterial infections.
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Affiliation(s)
- Chi-Lung Yang
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-L.Y.); (C.-H.L.); (C.-C.W.); (I.-S.C.)
| | - Ho-Cheng Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan;
- Research Center for Industry of Human Ecology, Research Center for Chinese Herbal Medicine, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chu-Hung Lin
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-L.Y.); (C.-H.L.); (C.-C.W.); (I.-S.C.)
| | - Yin-Hua Cheng
- PhD Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (Y.-H.C.); (H.-L.K.)
| | - Chia-Chi Wang
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-L.Y.); (C.-H.L.); (C.-C.W.); (I.-S.C.)
| | - Hung-Lin Kan
- PhD Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (Y.-H.C.); (H.-L.K.)
| | - Yueh-Hsiung Kuo
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, Chinese Medicine Research Center, and Research Center for Chinese Herbal Medicine, China Medical University, Taichung 404, Taiwan;
| | - Ih-Sheng Chen
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-L.Y.); (C.-H.L.); (C.-C.W.); (I.-S.C.)
| | - Hsun-Shuo Chang
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-L.Y.); (C.-H.L.); (C.-C.W.); (I.-S.C.)
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Correspondence: (H.-S.C.); (Y.-C.L.); Tel.: +886-7-312-1101 (ext. 2664) (H.-S.C.); +886-7-312-1101 (ext. 2012) (Y.-C.L.)
| | - Ying-Chi Lin
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-L.Y.); (C.-H.L.); (C.-C.W.); (I.-S.C.)
- PhD Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (Y.-H.C.); (H.-L.K.)
- Correspondence: (H.-S.C.); (Y.-C.L.); Tel.: +886-7-312-1101 (ext. 2664) (H.-S.C.); +886-7-312-1101 (ext. 2012) (Y.-C.L.)
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A New Apocarotenoid of Cinnamomum burmannii. Chem Nat Compd 2020. [DOI: 10.1007/s10600-020-03103-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Chen CY, Liu CM, Wu HM, Yeh HC, Li WJ, Li HT, Chang HW. A New Pyrone from Cinnamomum macrostemon. Chem Nat Compd 2020. [DOI: 10.1007/s10600-020-03107-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Li Y, Xie S, Ying J, Wei W, Gao K. Chemical Structures of Lignans and Neolignans Isolated from Lauraceae. Molecules 2018; 23:E3164. [PMID: 30513687 PMCID: PMC6321345 DOI: 10.3390/molecules23123164] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 11/27/2018] [Accepted: 11/29/2018] [Indexed: 11/17/2022] Open
Abstract
Lauraceae is a good source of lignans and neolignans, which are the most chemotaxonomic characteristics of many species of the family. This review describes 270 naturally occurring lignans and neolignans isolated from Lauraceae.
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Affiliation(s)
- Ya Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
| | - Shuhan Xie
- Lanzhou University High School, Lanzhou 730000, China.
| | - Jinchuan Ying
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
| | - Wenjun Wei
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
| | - Kun Gao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
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14
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Abstract
A new pyridine, 2-(4′-hydroxypyridin-3′-yl)-acetic acid (1), along with five known alkaloids, cinnaretamine (2), crykonisine (3), corydaldine (4), glaziovine (5) and zenkerine (6), were isolated from the roots of Cinnamomum philippinense (Lauraceae). Their structures were characterized and identified by spectral analysis.
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Affiliation(s)
- Hsing-Tan Li
- School of Medical and Health Sciences, Fooyin University, Kaohsiung 83102, Taiwan
| | - Wei-Jen Li
- School of Medical and Health Sciences, Fooyin University, Kaohsiung 83102, Taiwan
| | - Hui-Ming Wu
- School of Medical and Health Sciences, Fooyin University, Kaohsiung 83102, Taiwan
| | - Chung-Yi Chen
- School of Medical and Health Sciences, Fooyin University, Kaohsiung 83102, Taiwan
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