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Shi FZ, Fang YD, Fan M, Jiang XJ, Wang S, Wei GZ. Cytotoxic depsidones and xanthones from Garcinia esculenta Y. H. Li. Fitoterapia 2024; 172:105779. [PMID: 38104910 DOI: 10.1016/j.fitote.2023.105779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/23/2023] [Accepted: 12/12/2023] [Indexed: 12/19/2023]
Abstract
Six new compounds, including two depsidones garciculendepsidones A and B (1 and 2), one prenylated xanthone garciculenxanthone (3) and three dimeric xanthones bigarciculenxanthones A-C (4-6), were isolated from the twigs and leaves of Garcinia esculenta Y. H. Li. Their structures were elucidated based on comprehensive analyses of spectral data, including HRESIMS, 1D and 2D NMR, and ECD calculation. All the isolates were tested for their cytotoxicity against five human cancer cell lines (myeloid leukemia HL-60, lung cancer A-549 cells, hepatocellular carcinoma SMMC-7721, breast cancer MDA-MB-231 and colon cancer SW480), among them, compounds 3-5 displayed cytotoxic potential, especially garciculenxanthone (3) had the lowest IC50 value of 8.2 μm for lung cancer A-549 cells.
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Affiliation(s)
- Feng-Zhi Shi
- College of Pharmacy, Dili University, Dali 671000, People's Republic of China
| | - Yin-Dong Fang
- BioBioPha Co., Ltd., Kunming 650201, People's Republic of China; Reference Substance Branch, National Engineering Research Center for Modernization of Traditional Chinese Medicine, Kunming 650201, People's Republic of China
| | - Min Fan
- College of Pharmacy, Dili University, Dali 671000, People's Republic of China
| | - Xian-Jun Jiang
- BioBioPha Co., Ltd., Kunming 650201, People's Republic of China; Reference Substance Branch, National Engineering Research Center for Modernization of Traditional Chinese Medicine, Kunming 650201, People's Republic of China
| | - Shuang Wang
- College of Pharmacy, Dili University, Dali 671000, People's Republic of China.
| | - Guo-Zhu Wei
- BioBioPha Co., Ltd., Kunming 650201, People's Republic of China; Reference Substance Branch, National Engineering Research Center for Modernization of Traditional Chinese Medicine, Kunming 650201, People's Republic of China.
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2
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Abdul-Rahman AM, Elwekeel A, Alruhaimi RS, Kamel EM, Bin-Ammar A, Mahmoud AM, Moawad AS, Zaki MA. Multi-target action of Garcinia livingstonei extract and secondary metabolites against fatty acid synthase, α-glucosidase, and xanthine oxidase. Saudi Pharm J 2023; 31:101762. [PMID: 37701752 PMCID: PMC10494472 DOI: 10.1016/j.jsps.2023.101762] [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: 06/01/2023] [Accepted: 08/17/2023] [Indexed: 09/14/2023] Open
Abstract
Garcinia livingstonei is a traditional herbal medicine that showed beneficial health effects and bioactivities. Four compounds have been isolated from the plant leaves and were elucidated as lupeol, betulin, podocarpusflavone A, and amentoflavone. The inhibitory activities of G. livingstonei extract and isolated metabolites against fatty acid synthase (FAS), α-glucosidase, and xanthine oxidase (XO) were investigated in vitro. The affinity of the compounds toward the studied enzymes was investigated in silico. The plant extract inhibited FAS, α-glucosidase, and XO with IC50 values of 26.34, 67.88, and 33.05 µg/mL, respectively. Among the isolated metabolites, betulin exhibited the most inhibitory activity against α-glucosidase and XO with IC50 values of 38.96 and 30.94 µg/mL, respectively. Podocarpusflavone A and betulin were the most potent inhibitors of FAS with IC50 values of 24.08 and 27.96 µg/mL, respectively. Computational studies corroborated these results highlighting the interactions between metabolites and the enzymes. In conclusion, G. livingstonei and its constituents possess the potential to modulate enzymes involved in metabolism and oxidative stress.
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Affiliation(s)
- Azza M. Abdul-Rahman
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, 62514, Beni-Suef, Egypt
| | - Ahlam Elwekeel
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, 62514, Beni-Suef, Egypt
| | - Reem S. Alruhaimi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Emadeldin M. Kamel
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Albandari Bin-Ammar
- Department of Clinical Nutrition, College of Applied Medical Sciences, University of Hail, Saudi Arabia
| | - Ayman M. Mahmoud
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester M1 5GD, UK
- Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Abeer S. Moawad
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, 62514, Beni-Suef, Egypt
| | - Mohamed A. Zaki
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, 62514, Beni-Suef, Egypt
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3
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Nguyen HH, Duong TH, Nguyen TVA, Do TH, Pham DD, Nguyen NH, Nguyen HT. α-Glucosidase inhibitory derivatives of protocetraric acid. Nat Prod Res 2022; 37:1935-1946. [DOI: 10.1080/14786419.2022.2110093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Huu-Hung Nguyen
- Faculty of Applied Technology, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Vietnam
| | - Thuc-Huy Duong
- Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Viet Nam
| | | | - Thanh-Hung Do
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
| | - Duc-Dung Pham
- Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Viet Nam
| | | | - Huy Truong Nguyen
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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Nguyen THT, Nguyen TMN, Nguyen TT, Nguyen HH, Nguyen NH, Mai DT, Huynh BLC, Tran CL, Duong TH. Parmosidone K, a new meta-depsidone from the lichen Parmotrema tsavoense. Nat Prod Res 2020; 36:2037-2042. [PMID: 33213224 DOI: 10.1080/14786419.2020.1844697] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Further phytochemical investigation on P. tsavoense led to one new meta-depsidone, parmosidone K together with one known compound, barbatic acid. Their structures were determined by 1D and 2D NMR analysis, high resolution mass spectroscopy, and comparison their NMR data with those reported in literatures. Parmosidone K was evaluated for α-glucosidase inhibition and revealed the powerful activity with IC50 value of 3.12 µM.
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Affiliation(s)
- Thi-Hoai-Thu Nguyen
- Faculty of Basic Sciences, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thi-My-Nhung Nguyen
- Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam
| | - Thanh-Trung Nguyen
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam.,Faculty of Pharmacy, Duy Tan University, Da Nang, Vietnam
| | - Huu-Hung Nguyen
- Faculty of Biotechnology, Van Lang University, Ho Chi Minh City, Vietnam
| | - Ngoc-Hong Nguyen
- CirTech Institute, Ho Chi Minh City University of Technology (HUTECH), Ho Chi Minh City, Vietnam
| | - Dinh-Tri Mai
- Faculty of Chemistry, Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam.,Faculty of Technology, Van Lang University, Nguyen Khac Nhu, Ho Chi Minh City, Vietnam
| | | | - Cong-Luan Tran
- Faculty of Pharmacy and Nursery, Tay Do University, Can Tho, Vietnam
| | - Thuc-Huy Duong
- Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam
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Devi AP, Duong TH, Ferron S, Beniddir MA, Dinh MH, Nguyen VK, Pham NKT, Mac DH, Boustie J, Chavasiri W, Pogam PL. Salazinic Acid-Derived Depsidones and Diphenylethers with α-Glucosidase Inhibitory Activity from the Lichen Parmotrema dilatatum. PLANTA MEDICA 2020; 86:1216-1224. [PMID: 32819010 DOI: 10.1055/a-1203-0623] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Three new depsidones, parmosidones F - G (1 - 2), and 8'-O-methylsalazinic acid (3), and 3 new diphenylethers, parmetherines A - C (4 - 6), together with 2 known congeners were isolated from the whole thalli of Parmotrema dilatatum, a foliose chlorolichen. Their structures were unambiguously determined by extensive spectroscopic analyses and comparison with literature data. The isolated polyphenolics were assayed for their α-glucosidase inhibitory activities. Newly reported benzylated depsidones 1: and 2: in particular inhibited α-glucosidase with IC50 values of 2.2 and 4.3 µM, respectively, and are thus more potent than the positive control, acarbose.
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Affiliation(s)
- Asshaima Paramita Devi
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand
- Program in Biotechnology, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand
| | - Thuc-Huy Duong
- Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam
| | - Solenn Ferron
- Université Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, Rennes, France
| | - Mehdi A Beniddir
- Équipe «Pharmacognosie-Chimie des Substances Naturelles», BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Minh-Hiep Dinh
- Management Board of Ho Chi Minh City Agricultural Hi-Tech Park, Binh Thanh, Ho Chi Minh City, Vietnam
| | - Van-Kieu Nguyen
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang, Vietnam
| | | | - Dinh-Hung Mac
- Department of Organic Chemistry, VNU University of Science, Hoan Kiem, Hanoi, Vietnam
| | - Joël Boustie
- Université Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, Rennes, France
| | - Warinthorn Chavasiri
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, Thailand
| | - Pierre Le Pogam
- Équipe «Pharmacognosie-Chimie des Substances Naturelles», BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
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Cordidepsine is A Potential New Anti-HIV Depsidone from Cordia millenii, Baker. Molecules 2019; 24:molecules24173202. [PMID: 31484419 PMCID: PMC6749241 DOI: 10.3390/molecules24173202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 11/17/2022] Open
Abstract
Chemical investigation of Cordia millenii, Baker resulted in the isolation of a new depsidone, cordidepsine (1), along with twelve known compounds including cyclooctasulfur (2), lup-20(29)-en-3-triacontanoate (3), 1-(26-hydroxyhexacosanoyl)glycerol (4), glyceryl-1-hexacosanoate (5) betulinic acid (6), lupenone (7), β-amyrone (8), lupeol (9), β-amyrin (10), allantoin (11), 2'-(4-hydroxyphenyl)ethylpropanoate (12) and stigmasterol glycoside (13). Hemi-synthetic reactions were carried out on two isolated compounds (5 and 6) to afford two new derivatives, that is, cordicerol A (14) and cordicerol B (15), respectively. The chemical structures of all the compounds were established based on analysis and interpretation of spectroscopic data such as electron ionization mass spectrometry (EI-MS), high resolution electrospray ionization mass spectrometry (HR-ESI-MS), fast atom bombardment mass spectrometry (FAB-MS), one dimension and two dimension nuclear magnetic resonance (1D and 2D-NMR) spectral data as well as X-ray crystallography (XRC). Lupeol ester derivatives [Lup-20(29)-en-3-triacontanoate (3)], monoglycerol derivatives [1-(26-hydroxyhexacosanoyl)glycerol (4) and glyceryl-1 hexacosanoate (5)] were isolated for the first time from Cordia genus while sulfur allotrope [cyclooctasulfur (2)] was isolated for the first time from plant origin. Biological assays cordidepsine (1) exhibited significant anti-HIV integrase activity with IC50 = 4.65 μM; EtOAc extract of stem barks, EtOAc fraction of roots and leaves were not toxic against 3T3 cells.
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Yang L, Wang ZM, Wang Y, Li RS, Wang F, Wang K. Phenolic constituents with neuroprotective activities from Hypericum wightianum. PHYTOCHEMISTRY 2019; 165:112049. [PMID: 31229788 DOI: 10.1016/j.phytochem.2019.112049] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 06/02/2019] [Accepted: 06/11/2019] [Indexed: 06/09/2023]
Abstract
Five undescribed phenolic compounds, inclusing a depsidone derivative, hyperwightin A, a flavone derivative, hyperwightin B, and three benzophenone glycosides, hyperwightins C-E, along with four known ones were isolated from the 95% EtOH extract of the whole plants of Hypericum wightianum. Structures of the obtained compounds were elucidated by spectroscopic analyses. The protective effects of the isolates against corticosterone-induced PC12 cell injury were assessed. Hyperwightin E, petiolin G and hyperxanthone exhibited noticeable neuroprotection at 10 μM.
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Affiliation(s)
- Ling Yang
- School of Pharmacy and Yunnan Key Laboratory of Natural Medicine Pharmacology, Kunming Medical University, Kunming, 650500, PR China; Tongren Polytechnic College, Guizhou, 554300, PR China
| | - Zi-Ming Wang
- School of Pharmacy and Yunnan Key Laboratory of Natural Medicine Pharmacology, Kunming Medical University, Kunming, 650500, PR China
| | - Yun Wang
- School of Pharmacy and Yunnan Key Laboratory of Natural Medicine Pharmacology, Kunming Medical University, Kunming, 650500, PR China
| | - Rong-Sheng Li
- School of Pharmacy and Yunnan Key Laboratory of Natural Medicine Pharmacology, Kunming Medical University, Kunming, 650500, PR China
| | - Fei Wang
- BioBioPha Co., Ltd., Kunming 650201, PR China.
| | - Kou Wang
- School of Pharmacy and Yunnan Key Laboratory of Natural Medicine Pharmacology, Kunming Medical University, Kunming, 650500, PR China.
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Ribeiro PR, Ferraz CG, Cruz FG. New steroid and other compounds from non-polar extracts of Clusia burle-marxii and their chemotaxonomic significance. BIOCHEM SYST ECOL 2019. [DOI: 10.1016/j.bse.2018.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Akongwi M, Tih AE, Nyongbela KD, Samje M, Ghogomu RT, Bodo B. Brevipedicelones D and E, Two C-O-C Flavonoid Dimmers from the Leaves of Garcinia brevipedicellata and Anti-onchocercal Activity. NATURAL PRODUCTS AND BIOPROSPECTING 2019; 9:61-68. [PMID: 30511136 PMCID: PMC6328427 DOI: 10.1007/s13659-018-0191-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 10/31/2018] [Indexed: 06/09/2023]
Abstract
A novel isoflavone-chromone flavonoid C-O-C dimmer, brevipedicelone D (1), along with one new C-O-C biflavonoid derivative, brevipedicelone E (2), were isolated from the ethyl acetate extract of the leaves of Garcinia brevipedicellata, a medicinal plant used in folk medicine in parts of Cameroon. Their structures were elucidated by extensive spectroscopic techniques, including 1D- and 2D- NMR, MS experiments, as well as comparing their spectral data with those of known analogues. Anti-onchocercal screening of 1 showed moderate inhibition of adult worm motility of Onchocerca ochengi by 60% at the highest concentration (20 µg/mL) and inhibited motility of both the juvenile worms of O. ochengi and Loa loa by 90% at this same concentration.
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Affiliation(s)
- Mirabel Akongwi
- Department of Organic Chemistry, Faculty of Science, University of Yaounde 1, P. O. Box 812, Yaounde, Cameroon.
- Pharmacochemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea, South West Region, Cameroon.
| | - Anastasie E Tih
- Department of Organic Chemistry, Faculty of Science, University of Yaounde 1, P. O. Box 812, Yaounde, Cameroon
| | - Kennedy D Nyongbela
- Pharmacochemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea, South West Region, Cameroon
| | - Moses Samje
- Faculty of Science, ANDI Centre of Excellence on Onchocerciasis Research, University of Buea, P. O. Box 63, Buea, South West Region, Cameroon
| | - Raphael T Ghogomu
- Department of Organic Chemistry, Faculty of Science, University of Yaounde 1, P. O. Box 812, Yaounde, Cameroon
| | - Bernard Bodo
- Laboratoire de Chimie des Substances Naturelles, Muséum National d'Histoire Naturelle, 63 Rue Buffon, 75005, Paris, France
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Mathioudaki A, Berzesta A, Kypriotakis Z, Skaltsa H, Heilmann J. Phenolic metabolites from Hypericum kelleri Bald., an endemic species of Crete (Greece). PHYTOCHEMISTRY 2018; 146:1-7. [PMID: 29190454 DOI: 10.1016/j.phytochem.2017.11.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 11/13/2017] [Accepted: 11/22/2017] [Indexed: 06/07/2023]
Abstract
Thirteen compounds were isolated from the aerial parts of Hypericum kelleri Bald., growing as an endemic on the island of Crete (Greece). These compounds comprise four previously unknown prenylated xanthones 1,2-dihydro-3,8-dihydroxy-6-methoxy-1,1,5-tri(3-methylbut-2-enyl)xanthen-2,9-dione (kellerine A), 1,2-dihydro-3,6,8-trihydroxy-1,1,5-tri(3-methylbut-2-enyl)xanthen-2,9-dione (kellerine B), 1,2-dihydro-3,8-dihydroxy-6-methoxy-1,1-bi(3-methylbut-2-enyl)xanthen-2,9-dione (6-methylpatulone), (R/S)-1,3,5-trihydroxy-2-(3-methyl-2-buten-1-yl)-4-[2-(3-methylbut-2-enyl)-3-methylbut-3-enyl]-6-methoxy-9H-xanthen-9-one ((2″R/S)-kellerine C) and the hitherto undescribed depsidone (R/S)-1,3,6-trihydroxy-5-methoxy-2-(3-methyl-2-buten-1-yl)-4-[2-(3-methylbut-2-enyl)-3-methylbut-3-enyl]-11Η-dibenzo[b,e] [1,4]dioxepin-9-one ((2″R/S)-creticine). As known compounds, brevipsidone D, 4-geranyl-2-(2'-isobutyryl)-phloroglucinol, 4-geranyl-2-(2'-methylbutyryl)-phloroglucinol, I3, II8-biapigenin, quercetin, avicularin, pseudohypericin and neochlorogenic acid have been isolated. The structures were elucidated on the basis of their 1D, 2D NMR, CD and MS data. The study confirms the typical occurrence of xanthones in Hypericum section Oligostema (Boiss.) Stef., and is also the first report on the simultaneous isolation of acylphloroglucinols in this section. Furthermore the first evidence of depsidones in the genus Hypericum L. is reported. Cytotoxicity was investigated in HeLa cells for prenylated xanthones and the depsidones. Both triprenylated 1,2-dihydroxanthones (kellerine A and B) showed significant in vitro cytotoxicity with IC50 values of 2.5 ± 0.1 (kellerine A) and 5.9 ± 0.9 (kellerine B) μM, whereas other compounds were less cytotoxic (IC50 > 20 μM).
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Affiliation(s)
- Angeliki Mathioudaki
- Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Panepistimiopolis, Zografou, 157 71, Athens, Greece; Universität Regensburg, Pharmaceutical Biology, Universitätsstr. 31, D-93053, Regensburg, Germany
| | - Ariola Berzesta
- Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Panepistimiopolis, Zografou, 157 71, Athens, Greece; Universität Regensburg, Pharmaceutical Biology, Universitätsstr. 31, D-93053, Regensburg, Germany
| | - Zacharias Kypriotakis
- Technological Education Institute, School of Agricultural Production, Lab. of Taxonomy and Management of Wild Flora, Stavromenos P.O.Box 140, Heraklion-Crete, 71110, Greece
| | - Helen Skaltsa
- Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Panepistimiopolis, Zografou, 157 71, Athens, Greece
| | - Jörg Heilmann
- Universität Regensburg, Pharmaceutical Biology, Universitätsstr. 31, D-93053, Regensburg, Germany.
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A new biflavonoid and a new triterpene from the leaves of Garcinia paucinervis and their biological activities. J Nat Med 2017; 71:642-649. [DOI: 10.1007/s11418-017-1092-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 05/10/2017] [Indexed: 10/19/2022]
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12
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Abderamane B, Tih AE, Ghogomu RT, Blond A, Bodo B. New flavonoid C-O-C dimers and other chemical constituents from Garcinia brevipedicellata stem heartwood. ACTA ACUST UNITED AC 2017; 71:233-41. [PMID: 27343472 DOI: 10.1515/znc-2015-0125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 05/20/2016] [Indexed: 11/15/2022]
Abstract
The methanol extract of the stem heartwood of Garcinia brevipedicellata has furnished three new flavonoid C-O-C dimers, brevipedicilones A (6), B (8) and C (10), along with five previously reported flavonoid dimers, viz. amentoflavone (1), 4″'-O-methylamentoflavone (2), robustaflavone (3), 4'-O-methyl robustaflavone (4) and tetrahinokiflavone (5). The new structures, which are composed of flavanone-flavanonol or flavanonol-flavanonol sub-units, were established based on spectroscopic analysis including 1D and 2D NMR (1H-1H COSY, HSQC, HMBC, and NOESY) spectroscopy, and by comparing their spectral data with those reported for related compounds.
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13
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New depsidones and xanthone from the roots of Garcinia schomburgkiana. Fitoterapia 2016; 111:73-7. [DOI: 10.1016/j.fitote.2016.04.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 04/15/2016] [Accepted: 04/17/2016] [Indexed: 01/30/2023]
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14
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Ghani U. Re-exploring promising α-glucosidase inhibitors for potential development into oral anti-diabetic drugs: Finding needle in the haystack. Eur J Med Chem 2015; 103:133-62. [PMID: 26344912 DOI: 10.1016/j.ejmech.2015.08.043] [Citation(s) in RCA: 172] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Revised: 08/16/2015] [Accepted: 08/23/2015] [Indexed: 01/27/2023]
Abstract
Treatment of diabetes mellitus by oral α-glucosidase inhibitors is currently confined to acarbose, miglitol and voglibose marred by efficacy problems and unwanted side effects. Since the discovery of the drugs more than three decades ago, no significant progress has been made in the drug development area of anti-diabetic α-glucosidase inhibitors. Despite existence of a wide chemical diversity of α-glucosidase inhibitors identified to date, majority of them are simply piled up in publications and reports thus creating a haystack destined to be forgotten in the scientific literature without given consideration for further development into drugs. This review finds those "needles" in that haystack and lays groundwork for highlighting promising α-glucosidase inhibitors from the literature that may potentially become suitable candidates for pre-clinical or clinical trials while drawing attention of the drug development community to consider and take already-identified promising α-glucosidase inhibitors into the next stage of drug development.
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Affiliation(s)
- Usman Ghani
- Clinical Chemistry Unit, Department of Pathology, College of Medicine, King Saud University, Riyadh 11461, Saudi Arabia.
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15
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Liu Y, Ma L, Chen WH, Park H, Ke Z, Wang B. Binding Mechanism and Synergetic Effects of Xanthone Derivatives as Noncompetitive α-Glucosidase Inhibitors: A Theoretical and Experimental Study. J Phys Chem B 2013; 117:13464-71. [DOI: 10.1021/jp4067235] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan Liu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry & Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Lin Ma
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry & Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Wen-Hua Chen
- School
of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Hwangseo Park
- Department
of Bioscience and Biotechnology, Sejong University, 98 Kunja-Dong, Kwangjin-Ku, Seoul 143-747, Korea
| | - Zhuofeng Ke
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry & Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Bo Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry & Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
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Ha LD, Hansen PE, Duus F, Pham HD, Nguyen LHD. Oliveridepsidones A-D, antioxidant depsidones from Garcinia oliveri. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2012; 50:242-245. [PMID: 22407733 DOI: 10.1002/mrc.2862] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Accepted: 11/01/2011] [Indexed: 05/31/2023]
Abstract
Four new prenylated depsidones, oliveridepsidones A-D, were isolated from the bark of Garcinia oliveri collected in Vietnam. Their structures were elucidated using mainly NMR techniques ((1)H and (13)C NMR, HMQC, HMBC and NOE experiments).
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Affiliation(s)
- Ly Dieu Ha
- Department of Organic Chemistry, Faculty of Chemistry, HCM City University of Natural Sciences, HCM City, Vietnam
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Ali MI, Ahmed Z, Waffo AFK, Ali MS. Flavonoids from Erythrina vogelii (Fabaceae) of Cameroon. Nat Prod Commun 2010. [DOI: 10.1177/1934578x1000500613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A new flavone, vogeol, and a new isoflavone, vogliiol, have been isolated from Erythrina vogelii, a Cameroonian medicinal plant, along with seven known constituents (salvigenin, carpachromene, euchrenone b10 scandenone, 5,4′-dihydroxy-8-(3″″-methylbut-2″″-enyl)-2″′-(4″′-hydroxy-4″′-methylethyl)-furano-[4″′,5″′:6,7] isoflavone, erythrivarone C, and 5,7,4′-trihydroxy-6-[3″″-methylbut-3″″-enyl]-flavone). Their structures were elucidated by spectroscopic methods.
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Affiliation(s)
- Muhammad Imran Ali
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Zeeshan Ahmed
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | | | - Muhammad Shaiq Ali
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
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Smith JA, Molesworth PP, Ryan JH. Chapter 7: Seven-Membered Rings. PROGRESS IN HETEROCYCLIC CHEMISTRY 2009. [DOI: 10.1016/s0959-6380(09)70044-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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