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Xie WL, Lu ZY, Xu J, Chen Y, Teng HL, Yang GZ. Chemical Constituents from Berchemia polyphylla var. Leioclada. ACS OMEGA 2024; 9:3942-3949. [PMID: 38284073 PMCID: PMC10809260 DOI: 10.1021/acsomega.3c08357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/16/2023] [Accepted: 12/26/2023] [Indexed: 01/30/2024]
Abstract
One previously undescribed naphthoquinone-benzisochromanquinone dimer berpolydiquinone A (1), along with two previously undescribed naphthoquinone-anthraquinone dimers berpolydiquinones B and C (2-3), and one previously undescribed dimeric naphthalene berpolydinaphthalene A (4), were isolated from the stems and leaves of Berchemia polyphylla var. leioclada. The chemical structures of these compounds were determined using high-resolution electrospray ionization mass spectroscopy (HR-ESI-MS), spectroscopic data, the exciton chirality method (ECM), and quantum chemical calculation. Notably, compounds (1-2 and 5) are dimeric quinones that share the same naphthoquinone moiety, specifically identified as 2-methoxystypandron. Compound (4) is a derivative of dimeric naphthalene with a symmetrical structure, which is a new structure type isolated from B. polyphylla var. leioclada for the first time. These findings suggest that B. polyphylla var. leioclada serves as a significant reservoir of structurally diverse phenolic compounds. This study provides a scientific foundation for regarding B. polyphylla var. leioclada as a potential source of "Tiebaojin".
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Affiliation(s)
- Wen-Li Xie
- Ethnopharmacology
Level 3 Laboratory, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Zheng-Yang Lu
- College
of Chemistry and Material Sciences, South-Central
Minzu University, Wuhan 430074, P. R. China
| | - Jing Xu
- Ethnopharmacology
Level 3 Laboratory, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Yu Chen
- College
of Chemistry and Material Sciences, South-Central
Minzu University, Wuhan 430074, P. R. China
| | - Hong-Li Teng
- Guangxi
International Zhuang Medicine Hospital, Nanning 530201, P. R. China
| | - Guang-Zhong Yang
- Ethnopharmacology
Level 3 Laboratory, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, P. R. China
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Otgonsugar P, Buyankhishig B, Undrakhbayar T, Bilguun B, Sasaki K, Davaapurev BO, Batkhuu J, Byambajav T, Murata T. Phytochemical investigation of aerial parts of Woodsia ilvensis and its plasmin-inhibitory activity in vitro. PHYTOCHEMISTRY 2023; 215:113826. [PMID: 37598993 DOI: 10.1016/j.phytochem.2023.113826] [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: 02/22/2023] [Revised: 08/12/2023] [Accepted: 08/14/2023] [Indexed: 08/22/2023]
Abstract
The fern plant Woodsia ilvensis (L.) R. Br. belongs to the Woodsiaceae family and its leaves are used to treat diarrhea, soft-tissue injuries, and external injuries. Investigations of the compounds obtained from the plasmin-inhibitory-active extracts of W. ilvensis led to the isolation of two undescribed maleimide N-glycosides, an undescribed stilbenoid glycoside, and five undescribed acetylated flavonol bisdesmosides, together with 19 known compounds. The chemical structures of the isolated compounds were determined using spectroscopy. The absolute configurations of the sugar moieties were determined via HPLC after acid hydrolysis. Among the isolated compounds, some flavonoids and stilbenoid glycosides exhibited plasmin-inhibitory activity.
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Affiliation(s)
- Punsantsogvoo Otgonsugar
- Division of Pharmacognosy, Tohoku Medical and Pharmaceutical University, 4-1 Komatsushima 4-chome Aoba-ku, Sendai, 981-8558, Japan; Laboratory of Pharmacology and Toxicology, Institute of Veterinary Medicine, Mongolian University of Life Sciences, POB-24, Ulaanbaatar, 17024, Mongolia
| | - Buyanmandakh Buyankhishig
- Graduate School, National University of Mongolia, POB-617/46A, Ulaanbaatar, 14201, Mongolia; School of Engineering and Applied Sciences, National University of Mongolia, POB-617/46A, Ulaanbaatar, 14201, Mongolia
| | - Tserendorj Undrakhbayar
- Laboratory of Pharmacology and Toxicology, Institute of Veterinary Medicine, Mongolian University of Life Sciences, POB-24, Ulaanbaatar, 17024, Mongolia
| | - Byambajav Bilguun
- Laboratory of Metabolism and Biochemistry, Institute of Veterinary Medicine, Mongolian University of Life Sciences, POB-24, Ulaanbaatar, 17024, Mongolia
| | - Kenroh Sasaki
- Division of Pharmacognosy, Tohoku Medical and Pharmaceutical University, 4-1 Komatsushima 4-chome Aoba-ku, Sendai, 981-8558, Japan
| | - Bekh-Ochir Davaapurev
- School of Engineering and Applied Sciences, National University of Mongolia, POB-617/46A, Ulaanbaatar, 14201, Mongolia
| | - Javzan Batkhuu
- School of Engineering and Applied Sciences, National University of Mongolia, POB-617/46A, Ulaanbaatar, 14201, Mongolia
| | - Tseesuren Byambajav
- Laboratory of Pharmacology and Toxicology, Institute of Veterinary Medicine, Mongolian University of Life Sciences, POB-24, Ulaanbaatar, 17024, Mongolia
| | - Toshihiro Murata
- Division of Pharmacognosy, Tohoku Medical and Pharmaceutical University, 4-1 Komatsushima 4-chome Aoba-ku, Sendai, 981-8558, Japan.
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Bada L, Pereira RB, Pereira DM, Lores M, Celeiro M, Quezada E, Uriarte E, Gil-Longo J, Viña D. Phytochemical Analysis and Antiproliferative Activity of Ulex gallii Planch. (Fabaceae), a Medicinal Plant from Galicia (Spain). MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28010351. [PMID: 36615543 PMCID: PMC9822445 DOI: 10.3390/molecules28010351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023]
Abstract
The genus Ulex comprises thirteen accepted species of perennial shrubs in the family Fabaceae. In Galicia (Spain) many of these are considered spontaneous colonizing species, which are easy to establish and maintain. Among them, Ulex gallii Planch. is used in traditional medicine for the same anti-infective, hypotensive and diuretic purposes as Ulex europaeus L., which is the most studied species. Likewise, some studies have described the antitumoral properties of several species. However, there are few scientific studies that justify the use of Ulex gallii Planch. and nothing has been reported about its composition to date. In our study, the entire plant was extracted with methanol and the crude extract was subjected to liquid phase extraction with distinct solvents, yielding three fractions: hexane (H), dichloromethane (D) and methanol (M), which were subsequently fractionated. The dichloromethane (D5, D7 and D8) and methanol (M4) sub-fractions showed antiproliferative activity on A549 (lung cancer) and AGS (stomach cancer) cell lines, and caspase 3/7 activity assessment and DNA quantification were also performed. Targeted analysis via UHPLC-QToF, in combination with untargeted analysis via MS-Dial, MS-Finder and Global Natural Products Social Molecular Networking (GNPS), allowed us to tentatively identify different metabolites in these sub-fractions, mostly flavonoids, that might be involved in their antiproliferative activity.
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Affiliation(s)
- Lucía Bada
- Group of Pharmacology of Chronic Diseases (CD Pharma), Molecular Medicine and Chronic Diseases Research Centre (CIMUS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Renato B. Pereira
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal
| | - David M. Pereira
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal
- Correspondence: (D.M.P.); (D.V.); Tel.: +351-22-042-8655 (D.M.P.); +34-881-815-424 (D.V.)
| | - Marta Lores
- Laboratory of Research and Development of Analytical Solutions (LIDSA), Department of Analytical Chemistry, Nutrition and Food Science, Faculty of Chemistry, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - María Celeiro
- CRETUS Institute, Department of Analytical Chemistry, Nutrition and Food Science, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Elías Quezada
- Department of Organic Chemistry, Faculty of Pharmacy, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Eugenio Uriarte
- Department of Organic Chemistry, Faculty of Pharmacy, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
- Instituto de Ciencias Químicas Aplicadas, Universidad Autónoma de Chile, Santiago 7500912, Chile
| | - José Gil-Longo
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Dolores Viña
- Group of Pharmacology of Chronic Diseases (CD Pharma), Molecular Medicine and Chronic Diseases Research Centre (CIMUS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
- Correspondence: (D.M.P.); (D.V.); Tel.: +351-22-042-8655 (D.M.P.); +34-881-815-424 (D.V.)
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Four new glucosides from the aerial parts of Equisetum sylvaticum. J Nat Med 2022; 76:832-841. [PMID: 35933520 DOI: 10.1007/s11418-022-01643-0] [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: 06/21/2022] [Accepted: 07/27/2022] [Indexed: 10/15/2022]
Abstract
Two previously undescribed megastigmane glucosides, (3S)-3-hydroxy-4-oxo-7,8-dihydro-β-ionone-3-O-β-D-glucopyranoside (1), (3S)-3-hydroxy-4-oxo-β-ionone-3-O-β-D-glucopyranoside (2), an apocarotenoid glucoside named equiseoside A (3) and an unusual aromatic compound with a glucose-fused skeleton named equiseoside B (4), together with 35 known compounds (5-39) were isolated from the aerial parts of Equisetum sylvaticum. The structures of these compounds were elucidated by spectroscopic methods, including 1D and 2D NMR, IR, CD, and HR-MS.
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5
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Li Y, Chen Y, Xie W, Li X, Mei G, Xu J, Zhao X, Teng H, Yang G. Phenolic Compounds From the Stems and Leaves of Berchemia lineata (L.) DC. Front Chem 2022; 10:889441. [PMID: 35494635 PMCID: PMC9047694 DOI: 10.3389/fchem.2022.889441] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 03/16/2022] [Indexed: 11/30/2022] Open
Abstract
Eight new phenolic compounds, named bercheminols A-H (1–8), and eleven known analogues were isolated from the stems and leaves of Berchemia lineata (L.) DC. Their structures including the absolute configurations were elucidated by extensive spectroscopic analysis, chemical method, and quantum chemical calculations. Compound 1 possesses an unprecedented 3,4-dihydro-11H-benzo[b]pyrano[4,3-e] oxepin-11-one skeleton. The other new compounds belong to three structural types of natural products, including naphthopyrones (2–5), flavonoids (6–7), and bibenzyl (8). The α-glucosidase inhibitory activities of the isolated compounds were assayed. As a result, vittarin-B (9), rubrofusarin-6-O-β-D-glucopyranoside (11), quercetin (14), kaempferol (15), and dihydrokaempferol (17) showed moderate inhibitory activities against α-glucosidase with IC50 values of 22.5, 28.0, 36.5, 32.7, and 31.9 μM, respectively.
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Affiliation(s)
- Yitong Li
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Yu Chen
- College of Chemistry and Material Sciences, South-Central University for Nationalities, Wuhan, China
| | - Wenli Xie
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Xueni Li
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Gui Mei
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Jing Xu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Xiangpei Zhao
- Guangxi International Zhuang Medical Hospital, Nanning, China
| | - Hongli Teng
- Guangxi International Zhuang Medical Hospital, Nanning, China
- *Correspondence: Hongli Teng, ; Guangzhong Yang,
| | - Guangzhong Yang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
- *Correspondence: Hongli Teng, ; Guangzhong Yang,
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Peng ZQ, Liu Y, Wang SY, Jiang YK, Li XM, Rong XH, Sun Y, Pan J, Guan W, Algradi AM, Kuang HX, Yang BY. Chemical Constituents of the Roots of Schisandra chinensis. Chem Biodivers 2022; 19:e202100962. [PMID: 35218144 DOI: 10.1002/cbdv.202100962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 02/24/2022] [Indexed: 11/10/2022]
Abstract
One new phenylpropanoid schineolignin D (1), one new sesquiterpene (-)-(7S,10S)-3,11,12,13-tetrahydroxycalamenene (2), one new quinic acid 4-(E)-O-coumaroylquinic acid ethyl ester (3), and seven known compounds 4-10 were separated from the roots of Schisandra chinensis. The chemical structures of all compounds were characterized by NMR spectroscopic experiments. All compounds were assessed for their neuroprotective effects on PC12 cell lines induced by H2 O2 . Compounds 1, 3-4, and 7 showed statistically significant neuroprotective activities with the negative control group at 12.5 μM.
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Affiliation(s)
- Zi Qi Peng
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
| | - Yan Liu
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
| | - Si Yi Wang
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
| | - Yi Kai Jiang
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
| | - Xiao Mao Li
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
| | - Xiao Hui Rong
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
| | - Ye Sun
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
| | - Juan Pan
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
| | - Wei Guan
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
| | - Adnan Mohammed Algradi
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
| | - Hai Xue Kuang
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
| | - Bing You Yang
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, 150040, P. R. China
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7
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Zhu ZH, Ding YX, Zhou YG. Transfer-catalyst-free biomimetic asymmetric reduction of 3-sulfonyl coumarins with a regenerable NAD(P)H model. Chem Commun (Camb) 2022; 58:3973-3976. [PMID: 35254349 DOI: 10.1039/d1cc06896b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel transfer-catalyst-free biomimetic reduction of the tetrasubstituted olefins 3-sulfonyl coumarins with the chiral and regenerable [2.2]paracyclophane-based NAD(P)H model CYNAM has been developed, affording chiral 3-sulfonyl dihydrocoumarins with excellent enantioselectivities.
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Affiliation(s)
- Zhou-Hao Zhu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yi-Xuan Ding
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.,Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China.
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Zhao M, Li F, Cheng Y, Wang Y, Zhou Z. Optically Active 3,4-Dihydrocoumarins via Organocatalyzed Asymmetric [4+2] Annulation of ortho-Hydroxyl Functionalized p-Quinone Methides with β-Keto Acylpyrazoles. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202105055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Brahmachari G. Catalyst‐ and Additive‐Free Decarboxylative C‐4 Phosphorylation of Coumarin‐3‐Carboxylic Acids at Ambient Conditions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001054] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731 235 West Bengal India
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10
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11
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Liu GY, Tan L, Cheng L, Ding LS, Zhou Y, Deng Y, He YQ, Guo DL, Xiao SJ. Dendrobine-type alkaloids and bibenzyl derivatives from Dendrobium findlayanum. Fitoterapia 2020; 142:104497. [DOI: 10.1016/j.fitote.2020.104497] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/06/2020] [Accepted: 02/07/2020] [Indexed: 01/26/2023]
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12
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Lei CW, Zhang CB, Wang ZH, Xie KX, Zhao JQ, Zhou MQ, Zhang XM, Xu XY, Yuan WC. Coumarin-3-formylpyrazoles as 3-carbon synthons in cyclocondensation for the synthesis of spiro-fused pentacyclic spirooxindoles. Org Biomol Chem 2020; 18:845-850. [PMID: 31932837 DOI: 10.1039/c9ob02434d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Coumarin-3-formylpyrazoles have been synthesized and applied as 3-carbon synthons in reaction with 3-hydroxyoxindoles by using DABCO as the catalyst. A range of structurally diverse spiro-fused pentacyclic spirooxindoles, bearing a spirooxindole-γ-lactone and a 3,4-dihydrocoumarin substructure, could be smoothly obtained in good to excellent yields (up to 99%) with excellent diastereoselectivities (all cases >20 : 1 dr). The asymmetric version of this tandem reaction was preliminarily investigated by using chiral organocatalysts.
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Affiliation(s)
- Chuan-Wen Lei
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China. and University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chuan-Bao Zhang
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China. and University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhen-Hua Wang
- Institute for Advanced Study, Chengdu University, Chengdu, 610106, China.
| | - Ke-Xin Xie
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Jian-Qiang Zhao
- Institute for Advanced Study, Chengdu University, Chengdu, 610106, China.
| | - Ming-Qiang Zhou
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - Xiao-Mei Zhang
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - Xiao-Ying Xu
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - Wei-Cheng Yuan
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041, China. and Institute for Advanced Study, Chengdu University, Chengdu, 610106, China.
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Nugraha AS, Triatmoko B, Wangchuk P, Keller PA. Vascular Epiphytic Medicinal Plants as Sources of Therapeutic Agents: Their Ethnopharmacological Uses, Chemical Composition, and Biological Activities. Biomolecules 2020; 10:biom10020181. [PMID: 31991657 PMCID: PMC7072150 DOI: 10.3390/biom10020181] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/17/2020] [Accepted: 01/21/2020] [Indexed: 02/07/2023] Open
Abstract
This is an extensive review on epiphytic plants that have been used traditionally as medicines. It provides information on 185 epiphytes and their traditional medicinal uses, regions where Indigenous people use the plants, parts of the plants used as medicines and their preparation, and their reported phytochemical properties and pharmacological properties aligned with their traditional uses. These epiphytic medicinal plants are able to produce a range of secondary metabolites, including alkaloids, and a total of 842 phytochemicals have been identified to date. As many as 71 epiphytic medicinal plants were studied for their biological activities, showing promising pharmacological activities, including as anti-inflammatory, antimicrobial, and anticancer agents. There are several species that were not investigated for their activities and are worthy of exploration. These epipythes have the potential to furnish drug lead compounds, especially for treating cancers, and thus warrant indepth investigations.
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Affiliation(s)
- Ari Satia Nugraha
- Drug Utilisation and Discovery Research Group, Faculty of Pharmacy, University of Jember, Jember, Jawa Timur 68121, Indonesia;
- Correspondence: (A.S.N.); (P.A.K.); Tel.: +62-3-3132-4736 (A.S.N.); +61-2-4221-4692 (P.A.K.)
| | - Bawon Triatmoko
- Drug Utilisation and Discovery Research Group, Faculty of Pharmacy, University of Jember, Jember, Jawa Timur 68121, Indonesia;
| | - Phurpa Wangchuk
- Centre for Biodiscovery and Molecular Development of Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD 4878, Australia;
| | - Paul A. Keller
- School of Chemistry and Molecular Bioscience and Molecular Horizons, University of Wollongong, and Illawarra Health & Medical Research Institute, Wollongong, NSW 2522 Australia
- Correspondence: (A.S.N.); (P.A.K.); Tel.: +62-3-3132-4736 (A.S.N.); +61-2-4221-4692 (P.A.K.)
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14
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Wang S, Huang Z, Zhang J. The Intramolecular Rauhut−Currier Reaction between Nitroalkenes and Acrylates: An Approach to 3‐Methylene‐3,4‐Dihydrocoumarin Scaffold. ChemistrySelect 2020. [DOI: 10.1002/slct.201904509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sen Wang
- Institute and State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Zhiqiang Huang
- Department of Applied Chemistry Tianjin Agricultural University Tianjin 300384 P. R. China
| | - Jingjing Zhang
- Department of Applied Chemistry Tianjin Agricultural University Tianjin 300384 P. R. China
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15
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Giang PM, Tu LA, Trang VM, Binh NQ, Hyodo T, Yamaguchi K, Kawakami S, Otsuka H. Absolute Configuration of a New Phenethylcyclohexanetriol and a New Natural Bibenzyl From Amomum celsum. Nat Prod Commun 2019. [DOI: 10.1177/1934578x19843612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Methanol extracts of the rhizomes or fruit of Amomum celsum Lamxay & M.F. Newman (Zingiberaceae) yielded 5 compounds one of which, 1,3 S,5 S-trihydroxy-1-(4-hydroxyphenylethyl)cyclohexane (2), is new and one, 4-hydroxybibenzyl (1), is reported as a natural product for the first time. In addition, 3 known compounds, 5-hydroxy-3,7,3′,4′-tetramethoxyflavone (3), 3,5-diacetoxy-1,7- bis(3,4-dihydroxyphenyl)heptane (4), and 1,4-hydroquinone (5), were also isolated. Their structures were determined by performing extensive analysis of high-resolution electrospray ionization-mass spectrometry and nuclear magnetic resonance spectroscopic data. The absolute configuration of 2 was unambiguously established by X-ray crystallography and Mosher’s method. Cytotoxicity of compounds 1 and 2 against MCF-7 and Hep-G2 human cancer cell lines were tested in the sulforhodamine B cytotoxic assay. A plausible biosynthesis of 1 and 2 in A. celsum was proposed.
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Affiliation(s)
- Phan Minh Giang
- Faculty of Chemistry, VNU University of Science, Vietnam National University, Hanoi, Vietnam
| | - Lai Anh Tu
- Faculty of Chemistry, VNU University of Science, Vietnam National University, Hanoi, Vietnam
| | - Vu Minh Trang
- VNU University of Education, Vietnam National University, Hanoi, Vietnam
| | - Nguyen Quoc Binh
- Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Tadashi Hyodo
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Sanuki-shi, Japan
| | - Kentaro Yamaguchi
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Sanuki-shi, Japan
| | - Susumu Kawakami
- Faculty of Pharmacy, Division of Natural Product Chemistry, Yasuda Women’s University, Asaminami-ku, Japan
| | - Hideaki Otsuka
- Faculty of Pharmacy, Division of Natural Product Chemistry, Yasuda Women’s University, Asaminami-ku, Japan
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16
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Cui L, Lv D, Wang Y, Fan Z, Li Z, Zhou Z. Asymmetric Formal [4 + 2] Annulation of o-Quinone Methides with β-Keto Acylpyrazoles: A General Approach to Optically Active trans-3,4-Dihydrocoumarins. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00234] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Liying Cui
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
| | - Dan Lv
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
| | - Youming Wang
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
| | - Zhijin Fan
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
| | - Zhengming Li
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
| | - Zhenghong Zhou
- Institute and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China
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17
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Ahn S, Yun H, Han YT. An Improved C-Deglycosylation of Mangiferin to Norathyriol. ORG PREP PROCED INT 2018. [DOI: 10.1080/00304948.2017.1405336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Sungwan Ahn
- College of Pharmacy, Dankook University, Cheonan 31116, Republic of Korea
| | - Hwayoung Yun
- College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Young Taek Han
- College of Pharmacy, Dankook University, Cheonan 31116, Republic of Korea
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18
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Hiep NT, Kwon J, Kim DW, Hong S, Guo Y, Hwang BY, Kim N, Mar W, Lee D. Neuroprotective constituents from the fruits of Maclura tricuspidata. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.064] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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19
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Ganesh KR, Rao KR, Pratap T, Raghunadh A, Kumar SP, Basaveswara Rao M, Murthy C, Meruva SB. First stereo selective synthesis of 5-O-feruloyl-2-deoxy-d-ribono-γ-lactone. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.09.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Synthesis of enantiomerically enriched 4-aryl-3,4-dihydrocoumarins (microreview). Chem Heterocycl Compd (N Y) 2016. [DOI: 10.1007/s10593-016-1922-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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He Y, Li J, Wu HH, Chai X, Yang J, Wang YF, Zhang P, Zhu Y, Gao XM. A new caffeoylgluconic acid derivative from the nearly ripe fruits of Evodia rutaecarpa. Nat Prod Res 2015; 29:1243-8. [DOI: 10.1080/14786419.2015.1024116] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Ying He
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Jie Li
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Hong-Hua Wu
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Xin Chai
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Jing Yang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Yue-Fei Wang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Peng Zhang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Yan Zhu
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Xiu-Mei Gao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
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22
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23
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Kamat DP, Tilve SG, Kamat VP, Kirtany JK. Syntheses and Biological Activities of Chroman-2-ones. A Review. ORG PREP PROCED INT 2015. [DOI: 10.1080/00304948.2015.983805] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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24
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Cytotoxic activities of flavonoids from Centaurea scoparia. ScientificWorldJournal 2014; 2014:274207. [PMID: 25114960 PMCID: PMC4075006 DOI: 10.1155/2014/274207] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Accepted: 05/22/2014] [Indexed: 12/12/2022] Open
Abstract
Phytochemical studies on the ethanolic extract of the aerial parts of Centaurea scoparia led to the isolation of two new flavonoids, 3′,4′-dihydroxy-(3′′,4′′-dihydro-3′′-hydroxy-4′′-acetoxy)-2′′,2′′-dimethylpyrano-(5′′,6′′:7,8)-flavone-3-O-β-D-glucopyranoside (1) and 3,3′,4′-trihydroxy-(3′′,4′′-dihydro-3′′,4′′-dihydroxy)-2′′,2′′-dimethylpyrano-(5′′,6′′:7,8)-flavone (2), along with eight known flavonoids isolated for the first time from this plant, cynaroside (3), Apigetrin (4), centaureidin (5), oroxylin A (6), 5,7-dihydroxy-3′,4′,5′-trimethoxyflavone (7), atalantoflavone (8), 5-hydroxy-3′,4′,8-trimethoxy-2′′,2′′-dimethylpyrano (5′′,6′′:6,7)-flavone (9), and 3′,4′,5,8-tetramethoxy-2′′,2′′-dimethylpyrano (5′′,6′′:6,7)-flavone (10). The structures of the isolated compounds were elucidated by means of spectroscopic tools including 1D and 2D NMR, UV, IR, and mass spectroscopy. Cytotoxic activities of the isolated compounds were evaluated against human cervical carcinoma HeLa, human hepatocellular carcinoma HepG2, and human breast carcinoma MCF-7. Compound 2 was the most potent cytotoxic agent against HeLa cells with an IC50 0.079 μM.
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26
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Takahashi M, Murata Y, Hakamata Y, Suzuki K, Sengoku T, Yoda H. First total synthesis and absolute stereochemical assignment of vittarilide-A, an antioxidant extractive component isolated from Vittaria anguste-elongata Hayata. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.06.105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Huang Z, Yang J, She Z, Lin Y. A new isoflavone from the mangrove endophytic fungusFusariumsp. (ZZF60). Nat Prod Res 2012; 26:11-5. [DOI: 10.1080/14786419.2010.529444] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Xie CF, Yuan HQ, Qu JB, Xing J, Lü BB, Wang XN, Ji M, Lou HX. Biocatalytic Production of Acyclic Bis[bibenzyls] from Dihydroresveratrol by CrudeMomordica charantiaPeroxidase. Chem Biodivers 2009; 6:1193-201. [DOI: 10.1002/cbdv.200800229] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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30
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Chang HL, Su JH, Yeh YT, Lee YC, Chen HM, Wu YC, Yuan SSF. Protoapigenone, a novel flavonoid, inhibits ovarian cancer cell growth in vitro and in vivo. Cancer Lett 2008; 267:85-95. [DOI: 10.1016/j.canlet.2008.03.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2007] [Revised: 01/30/2008] [Accepted: 03/05/2008] [Indexed: 10/22/2022]
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31
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Zhou HY, Wang D, Cui Z. Ferulates, amurenlactone A and amurenamide A from traditional Chinese medicine cortex Phellodendri Amurensis. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2008; 10:409-413. [PMID: 18464078 DOI: 10.1080/10286020801966534] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Two new ferulate compounds, amurenlactone A (1) and amurenamide A (2), along with 11 known compounds have been isolated from the cortex of Phellodendron amurense. The structures of the new compounds were established based on 1D, 2D NMR and mass spectral analyzes. The known compounds were identified by comparison with authentic samples.
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Affiliation(s)
- Hai-Yan Zhou
- Department of Pharmacognosy, Shenyang Pharmaceutical University, Shenyang, China
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32
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Veitch NC, Grayer RJ. Flavonoids and their glycosides, including anthocyanins. Nat Prod Rep 2008; 25:555-611. [DOI: 10.1039/b718040n] [Citation(s) in RCA: 216] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Qu J, Xie C, Guo H, Yu W, Lou H. Antifungal dibenzofuran bis(bibenzyl)s from the liverwort Asterella angusta. PHYTOCHEMISTRY 2007; 68:1767-74. [PMID: 17570447 DOI: 10.1016/j.phytochem.2007.04.036] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2006] [Revised: 02/13/2007] [Accepted: 04/27/2007] [Indexed: 05/15/2023]
Abstract
Bioactivity-guided separation of an antifungal extract from the liverwort Asterella angusta afforded four bis(bibenzyl)s, asterelin A (1), asterelin B (2), 11-O-demethyl marchantin I (3), and dihydroptychantol A (4), together with six known ones. Their structures were established by extensive spectroscopic analysis (1D and 2D-NMR, MS), and that of 2 was confirmed by X-ray crystallographic diffraction analysis. Compounds 1 and 2 are the first examples of dibenzofuran bis(bibenzyl)s. The antifungal activity of the isolated bis(bibenzyl)s against the common clinical pathogenic fungus Candida albicans was evaluated using both the thin-layer chromatography bioautographic assay and the broth microdilution method. They showed moderate antifungal activities with minimal inhibitory concentration (MIC) values ranging from 16 microg/ml to 512 microg/ml.
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Affiliation(s)
- Jianbo Qu
- School of Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan 250012, PR China
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34
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Jung SH, Lee JM, Lee HJ, Kim CY, Lee EH, Um BH. Aldose Reductase and Advanced Glycation Endproducts Inhibitory Effect of Phyllostachys nigra. Biol Pharm Bull 2007; 30:1569-72. [PMID: 17666823 DOI: 10.1248/bpb.30.1569] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To evaluate active principles for diabetic complications from the black bamboo leaves, Phyllostachys nigra, eight compounds were isolated and tested for their effects on rat lens aldose reductase and advanced glycation endproducts. As a result, luteolin 6-C-(6''-O-trans-caffeoylglucoside) was found to show a strong aldose reductase and advanced glycation endproducts inhibition. This compound showed antioxidative activity measured in Photochem apparatus. It is concluded, therefore, that luteolin 6-C-(6''-O-trans-caffeoylglucoside) (6), a flavone of this plant, have antioxidative as well as aldose reductase and advanced glycation endproducts inhibitory effects. As a result, this compound could be offered as a leading compound for further study as a new natural products drug for diabetic complications.
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Affiliation(s)
- Sang Hoon Jung
- Natural Products Research Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangneung 210-340, Korea
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35
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Zidorn C, Grass S, Ellmerer EP, Ongania KH, Stuppner H. Stilbenoids from Tragopogon orientalis. PHYTOCHEMISTRY 2006; 67:2182-8. [PMID: 16890254 DOI: 10.1016/j.phytochem.2006.06.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2006] [Revised: 06/22/2006] [Accepted: 06/22/2006] [Indexed: 05/11/2023]
Abstract
A phytochemical investigation of Tragopogon orientalis L. (Asteraceae, Cichorieae) yielded the natural products 6''-O-(7,8-dihydrocaffeoyl)-alpha,beta-dihydrorhaponticin, 3'-O-methyl-alpha,beta-dihydrorhaponticin, and (S)-3-(4-beta-glucopyranosyloxybenzyl)-7-hydroxy-5-methoxyphtalide as well as known compounds alpha,beta-dihydrorhaponticin, 3-(4-methoxybenzyl)-5,7-dimethoxyphthalide, p-dihydrocoumaric acid methyl ester, and 1-hydroxypinoresinol-1-O-beta-glucopyranoside. The structures were established by HR mass spectrometry, extensive 1D and 2D NMR spectroscopy, and CD spectroscopy. Moreover, the radical scavenging activities of the major compounds were measured using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. The chemosystematic impact of the occurrence of stilbene derivatives in T. orientalis is discussed.
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Affiliation(s)
- Christian Zidorn
- Institut für Pharmazie der Universität Innsbruck, Josef-Moeller-Haus, Innrain 52, A-6020 Innsbruck, Austria
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Tsuboi S, Komiyama T, Takaguchi Y. Synthesis of 3-DPA Lactone via Tandem Cyclization Reaction of Acetonide Protected Methyl 4,5-Dihydroxy-2-chloroglycidate. HETEROCYCLES 2006. [DOI: 10.3987/com-06-10789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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