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Chen YC, Su SH, Huang JC, Chao CY, Sung PJ, Chen YF, Ko HH, Kuo YH. Tyrosinase Inhibitors Derived from Chemical Constituents of Dianella ensifolia. Plants (Basel) 2022; 11:2142. [PMID: 36015447 PMCID: PMC9414913 DOI: 10.3390/plants11162142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/12/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
Dianella ensifolia is a perennial herb with thickened rhizome and is widely distributed in tropical and subtropical regions of Asia, Australia, and the Pacific islands. This plant has the potential to be used as a source of herbal medicine. This study investigated further phytochemistry and tyrosinase inhibitory effect of some constituents isolated from D. ensifolia. Four new flavans, (2S)-4’-hydroxy-6,7-dimethoxyflavan (1), (2S)-3’,4’-dihydroxy-7-methoxy-8-methylflavan (2), (2S)-2’-hydroxy-7-methoxyflavan (3), and (2S,1′S)-4-hydroxy-4-(7-methoxy-8-methylchroman-2-yl)-cyclohex-2-enone (4), together with 67 known compounds, including 10 flavans (5−14), 5 flavanones (15−19), 3 flavone (20−22), 5 chalcones (23−27), 3 chromones (28−30), 15 aromatics (31−45), 7 phenylpropanoids (46−52), one lignan (53), 7 steroids (54−60), one monoterpene (61), one diterpene (62), 4 triterpenes (63−66), a carotenoid (67), 2 alkaloids (68 and 69), and 2 fatty acids (70 and 71) were isolated from D. ensifolia. Their structures were elucidated on the basis of physical and spectroscopic data analyses. Moreover, compounds 1−4, 8, 10−15, 20, 21, and 41 were evaluated for their mushroom tyrosinase inhibitory effect. Compounds 11 and 14 strongly inhibited mushroom tyrosinase activity with IC50 values of 8.6 and 14.5 μM, respectively.
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Affiliation(s)
- Yu-Chang Chen
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Sheng-Han Su
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Jheng-Cian Huang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Che-Yi Chao
- Department of Food Nutrition and Health Biotechnology, Asia University, Taichung 413, Taiwan
| | - Ping-Jyun Sung
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan
| | - Yih-Fung Chen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Horng-Huey Ko
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Fragrance and Cosmetic Science, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Drug Development and Value Creation Center, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yueh-Hsiung Kuo
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Pharmacy, China Medical University, Taichung 404, Taiwan
- Chinese Medicine Research Center, China Medical University, Taichung 404, Taiwan
- Department of Biotechnology, Asia University, Taichung 413, Taiwan
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Abstract
Phytochemical investigation and chromatographic separation of extracts from the aerial parts of Dianella ensifolia (L.) DC. (synonym Dianella nemorosa Lam. Ex. Schiler f.) led to the isolation of 10 compounds, the structures of which were determined by HR-ESI-MS and 1 D- and 2 D-NMR spectroscopies, and by comparisons with published studies. Among the isolated compounds were three flavans, a biflavan, a biflavone, a tetralone, a naphthalen glycoside, an aromatic compound, and two steroids. Six of these were known chemicals, while three were identified as new compounds: 7-acetyl-4R,8-dihydroxy-6-methyl-1-tetralone, 2(S),2',4'-dihydroxy-7-methoxyflavan, and diaensi-biflavan. 2(S),7,4'-dimethoxy flavan was obtained for the first time as a natural product.
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Affiliation(s)
- Le Thi Hong Nhung
- Faculty of Chemical Technology, Hanoi University of Industry, Bac Tu Liem, Ha Noi, Vietnam
| | - Nguyen Thi Thuy Linh
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Department of Chemistry Graduate, University of Science and Technology, VAST, Hanoi, Vietnam
| | - Ba Thi Cham
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Department of Chemistry Graduate, University of Science and Technology, VAST, Hanoi, Vietnam
| | - Trinh Thi Thuy
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Department of Chemistry Graduate, University of Science and Technology, VAST, Hanoi, Vietnam
| | - Nguyen Thanh Tam
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Department of Chemistry Graduate, University of Science and Technology, VAST, Hanoi, Vietnam
| | - Dao Duc Thien
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - Pham Thi Mai Huong
- Faculty of Chemical Technology, Hanoi University of Industry, Bac Tu Liem, Ha Noi, Vietnam
| | - Vu Minh Tan
- Faculty of Chemical Technology, Hanoi University of Industry, Bac Tu Liem, Ha Noi, Vietnam
| | - Bui Huu Tai
- Department of Structural Research, Institute of Marine Biochemistry, VAST, Hanoi, Vietnam
| | - Nguyen Thi Hoang Anh
- Laboratory of Natural Products Research, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam.,Department of Chemistry Graduate, University of Science and Technology, VAST, Hanoi, Vietnam
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Long H, Chen Y, Hu ZH, Zhang SJ, Li LJ. A pair of new diastereoisomeric phenylpropanoid-substituted flavan from the leaves of Ilex centrochinensis. Nat Prod Res 2018; 34:2703-2708. [PMID: 29553829 DOI: 10.1080/14786419.2018.1452006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A pair of new diastereoisomeric flavan, containing an additional phenylpropanoid (C6-C3) unit in the molecule, has been isolated from the leaves of Ilex centrochinensis. Their structures were identified by extensive spectral analysis and comparison with the data of known analogues.
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Affiliation(s)
- Hui Long
- National & Local Joint Engineering Research Center for High-Throughput Drug Screening Technology , Wuhan, China.,Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources , Wuhan, China.,Hubei Key Laboratory of Bio-Technology of Traditional Chinese Medicine, Hubei University , Wuhan, China
| | - Yu Chen
- National & Local Joint Engineering Research Center for High-Throughput Drug Screening Technology , Wuhan, China.,Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources , Wuhan, China.,Hubei Key Laboratory of Bio-Technology of Traditional Chinese Medicine, Hubei University , Wuhan, China
| | - Ze-Hua Hu
- Medical School, Hubei University for Nationalities , Enshi, China
| | - Shao-Jun Zhang
- National & Local Joint Engineering Research Center for High-Throughput Drug Screening Technology , Wuhan, China.,Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources , Wuhan, China.,Hubei Key Laboratory of Bio-Technology of Traditional Chinese Medicine, Hubei University , Wuhan, China
| | - Lu-Jun Li
- National & Local Joint Engineering Research Center for High-Throughput Drug Screening Technology , Wuhan, China.,Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources , Wuhan, China.,Hubei Key Laboratory of Bio-Technology of Traditional Chinese Medicine, Hubei University , Wuhan, China.,Shenzhen Institue of Geriatrice , Shenzhen, China
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Stefano VD, Pitonzo R, Schillaci D. Phytochemical and anti-staphylococcal biofilm assessment of Dracaena draco L. Spp. draco resin. Pharmacogn Mag 2014; 10:S434-40. [PMID: 24991124 PMCID: PMC4078336 DOI: 10.4103/0973-1296.133300] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 04/06/2013] [Accepted: 05/28/2014] [Indexed: 11/04/2022] Open
Abstract
Background: Dracaena draco L. ssp. draco is known as the “dragon's blood tree” and it is endemic from the Canary Islands and Morocco. Objective: Carry out phytochemical investigation of acetonic extracts of red resin obtained from the trunk of D. draco, to obtain to the isolation of the most abundant resin constituents, belonging to the class of flavonoids: flavans, along with homoisoflavans and homoisoflavanones. Materials and Methods: The structures of the isolated compounds were established by Nuclear Magnetic Resonance (NMR) and mass spectrometry data and comparison with literature data. The acetonic extract was evaluated for its anti-staphylococcal properties against two reference strains. Results: The acetonic extracts resulted inactive at the maximum tested concentration of 1000 μg/ml against free living forms of tested staphylococci, but they showed a very interesting activity in the prevention of a biofilm formation at a concentration equal to 200 μg/ml against S. aureus ATCC 25923.
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Affiliation(s)
- V Di Stefano
- Department of Biological Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Italy
| | - R Pitonzo
- Centro Grandi Apparecchiature UniNetLab, University of Palermo, Italy
| | - D Schillaci
- Department of Biological Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Italy
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