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Laryea MK, Boadu Ampomah G, Ekuadzi E, Dickson RA, Borquaye LS. Antimalarial compounds from the climbing stems of salacia debilis. Nat Prod Res 2023:1-10. [PMID: 37867307 DOI: 10.1080/14786419.2023.2272288] [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: 03/10/2023] [Accepted: 09/16/2023] [Indexed: 10/24/2023]
Abstract
Salacia debilis Walp., (Celastraceae) is used traditionally in West Africa for the treatment of malaria. However, no scientific reports validating these effects and its active constituents are on record. Therefore, this study is aimed at evaluating the antimalarial effects, of its ethanolic extract and isolated compounds against Plasmodium falciparum 3D7 and P. berghei ANKA strains. Using chromatographic, spectrometric and spectroscopic techniques three compounds were isolated and characterised. The extract of S. debilis was active against P. falciparum 3D7, in an in vitro assay with IC50 of 12.0 ± 0.32 µg/ml. The three isolated compounds, namely 1,10-dihydroxy-6H-benzo[c]chromen-6-one (1), 8- hydroxy-3,4-dimethoxydibenzo[b,d]furan-1-carboxylic acid (2) and benzyl-2-methoxybenzoate (3), also showed antimalarial activity against Plasmodium berghei ANKA strain in curative and suppressive in vivo assays. The ethanolic extract and isolated compounds of S. debilis possess antimalarial effects. The isolated compounds may be responsible, at least in part, for the observed activities of the extract.
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Affiliation(s)
- Michael Konney Laryea
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Gilbert Boadu Ampomah
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Edmund Ekuadzi
- Department of Pharmacognosy, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Rita Akosua Dickson
- Department of Pharmacognosy, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Lawrence Sheringham Borquaye
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Central Laboratory, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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2
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Ursane-type triterpene oligoglycosides with anti-hepatosteatosis and anti-hyperlipidemic activity from the leaves of Ilex paraguariensis A. St.-Hil. J Nat Med 2022; 76:654-669. [PMID: 35292883 DOI: 10.1007/s11418-022-01614-5] [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: 12/18/2021] [Accepted: 02/25/2022] [Indexed: 10/18/2022]
Abstract
The methanol extract from the leaves of Ilex paraguariensis A. St.-Hil. (Aquifoliaceae), popularly known as mate, maté, or yerba maté, inhibits the intracellular triglyceride accumulation in HepG2 cells and suppresses the plasma triglyceride elevation in olive oil-treated mice. Three new triterpene saponins, termed mateosides I (1), II (2), and III (3), were isolated from the extract along with 29 known compounds. The structures of 1-3 were elucidated based on chemical and spectroscopic evidence. Among the isolates, principal saponin constituents, 2 and matesaponins 1 (7) and 2 (9), potently inhibited the triglyceride accumulation in HepG2 cells simultaneously treated with oleic acid and high glucose. In vivo assay of the methanol extract of I. paraguariensis revealed that 7 and 9 showed anti-hyperlipidemic activities in olive oil-treated mice. These results suggested that the saponin constituents of I. paraguariensis could be valuable bioactive marker for the anti-obesogenic activity.
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3
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Chemical constituents from the whole plants of Sedum sarmentosum Bunge and their chemotaxonomic significance. BIOCHEM SYST ECOL 2020. [DOI: 10.1016/j.bse.2020.104180] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Yan J, Shi X, Donkor PO, Zhu H, Gao X, Ding L, Qiu F. Nine pairs of megastigmane enantiomers from the leaves of Eucommia ulmoides Oliver. J Nat Med 2017. [PMID: 28634927 DOI: 10.1007/s11418-017-1102-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Nine pairs of megastigmane enantiomers (1a/1b-9a/9b), comprising two new compounds (6S,9R)-blumenol C (7b), (6S,9S)-blumenol C (8b), two pairs of enantiomers (+)-(6R)-eucomegastigmane A (1a), (-)-(6S)-eucomegastigmane A (1b), (+)-(3S,4S)-eucomegastigmane B (5a), (-)-(3R,4R)-eucomegastigmane B (5b) isolated by chiral resolution firstly, and twelve known compounds, were isolated from the leaves of Eucommia ulmoides Oliver. Their structures were elucidated based on extensive spectroscopic analysis. Absolute configurations of the megastigmane enantiomers were assigned by comparing experimental ECD and OR with calculated ECD and OR. Docking-based virtual screening of all compounds showed that megastigmane enantiomers have weak intermolecular interactions with the binding site residues of angiotensin-converting enzyme (ACE) and angiotensin II type 1 receptor (AT1R).
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Affiliation(s)
- Jiankun Yan
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, People's Republic of China
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, #312 Anshanxi Road, Nankai District, Tianjin, 300193, People's Republic of China
- Department of Natural Products Chemistry, School of Traditional Chinese Materia Medica, Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, People's Republic of China
| | - Xuliu Shi
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, People's Republic of China
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, #312 Anshanxi Road, Nankai District, Tianjin, 300193, People's Republic of China
| | - Paul Owusu Donkor
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, People's Republic of China
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, #312 Anshanxi Road, Nankai District, Tianjin, 300193, People's Republic of China
| | - Huajie Zhu
- College of Pharmacy, Hebei University, Baoding, 071002, People's Republic of China
| | - Xiumei Gao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, #312 Anshanxi Road, Nankai District, Tianjin, 300193, People's Republic of China
| | - Liqin Ding
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, #312 Anshanxi Road, Nankai District, Tianjin, 300193, People's Republic of China.
| | - Feng Qiu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, People's Republic of China.
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, #312 Anshanxi Road, Nankai District, Tianjin, 300193, People's Republic of China.
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González-Delgado JA, Romero MA, Pischel U, Arteaga JF. Universal access to megastigmanes through controlled cyclisation towards highly substituted cyclohexenes. Org Biomol Chem 2017; 15:408-415. [PMID: 27924327 DOI: 10.1039/c6ob02587k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the selective formation of cyclohexenes with a tetrasubstituted double bond, the structural key element of megastigmanes. For this purpose the ZrCl4-mediated epoxide ring opening of epoxy-geranylacetone was employed. This approach provides a universal entry to the preparation of the members of the megastigmane family, which was exemplified in the asymmetric synthesis of tectoionol B.
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Affiliation(s)
- José A González-Delgado
- CIQSO - Centre for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva, Campus de El Carmen s/n, 21071 Huelva, Spain.
| | - Miguel A Romero
- CIQSO - Centre for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva, Campus de El Carmen s/n, 21071 Huelva, Spain.
| | - Uwe Pischel
- CIQSO - Centre for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva, Campus de El Carmen s/n, 21071 Huelva, Spain.
| | - Jesús F Arteaga
- CIQSO - Centre for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva, Campus de El Carmen s/n, 21071 Huelva, Spain.
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Mba’ning BM, Ndjakou BL, Talontsi FM, Lannang AM, Dittrich B, Ngouela SA, Tsamo E, Sewald N, Laatsch H. Salaterpene E, a eudesmane-type sesquiterpene from Salacia longipes var. camerunensis. ACTA ACUST UNITED AC 2016. [DOI: 10.1515/znb-2015-0106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Abstract
A mixture of two compounds with potent antiplasmodial activity in vitro against the W2 strain of Plasmodium falciparum (half maximal inhibitory concentration, 1.12 μg/mL) was obtained in a previous investigation of the CH2Cl2-MeOH extract of the seeds of Salacia longipes var. camerunensis. Separation by column chromatography led now to the isolation of salaterpene E (1) and (1R,2R,4S,5S,6R,7R,9S,10R)-2-acetoxy-1,6,9-tribenzoyloxy-4-hydroxy-dihydro-β-agarofuran (2). The structure of 1 was elucidated by spectroscopic analysis, and its absolute configuration was established unambiguously by means of single-crystal X-ray diffraction. Also the absolute configurations of the recently described salaterpenes A (2a) and D (2b) were determined by this method using the anomalous scattering of the oxygen atoms only.
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Affiliation(s)
| | - Bruno Lenta Ndjakou
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé 1, P.O. Box 47, Yaoundé, Cameroon
| | - Ferdinand Mouafo Talontsi
- Institute of Environmental Research (INFU), Department of Chemistry and Chemical Biology, Technical University of Dortmund, Otto-Hahn-Strasse 6, D-44221 Dortmund, Germany
| | - Alain Meli Lannang
- Department of Chemistry, Organic, and Bioorganic Chemistry, Bielefeld University, D-33501 Bielefeld, Germany
| | - Birger Dittrich
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | | | - Etienne Tsamo
- Department of Organic Chemistry, University of Yaoundé 1, Yaoundé, Cameroon
| | - Norbert Sewald
- Department of Chemistry, Organic, and Bioorganic Chemistry, Bielefeld University, D-33501 Bielefeld, Germany
| | - Hartmut Laatsch
- Institute of Organic and Biomolecular Chemistry, University of Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany
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7
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Ni L, Zhang XM, Zhou X, Ma J, Li CJ, Li L, Zhang TT, Zhang DM. Megastigmane Glycosides from the Leaves of Tripterygium wilfordii. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501001202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Two new megastigmane glycosides, named wilfordonisides A and B (1 and 2), and four known compounds (3–6) were isolated from the leaves of Tripterygium wilfordii, and one new aglycon, named wilfordoninol A (2a), was acquired by enzymatic hydrolysis of 2. The absolute stereostructures of the compounds were determined by Mosher's method and by CD. At a concentration of 10 μM, compounds 1, 3, and 5 inhibited STAT1 translocation by 38.1 ± 0.9%, 55.8 ± 0.8%, and 53.9 ± 1.0%, respectively.
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Affiliation(s)
- Lin Ni
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiao-mei Zhang
- Chongqing Academy of Chinese Materia Medica, Chongqing 400065, China
| | - Xing Zhou
- Chongqing Academy of Chinese Materia Medica, Chongqing 400065, China
| | - Jie Ma
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Chuang-jun Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Li Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Tian-tai Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Dong-Ming Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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8
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Bai MM, Shi W, Tian JM, Lei M, Kim JH, Sun YN, Kim YH, Gao JM. Soluble epoxide hydrolase inhibitory and anti-inflammatory components from the leaves of Eucommia ulmoides Oliver (duzhong). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:2198-2205. [PMID: 25679330 DOI: 10.1021/acs.jafc.5b00055] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Eucommia ulmoides leaves have been used as a functional food and drink in China. The purpose of this study was to identify the bioactive constituents with soluble epoxide hydrolase (sEH) inhibitory activity and anti-inflammatory properties. Twenty-seven known compounds (1-27) were isolated from the leaves of E. ulmoides Oliver, and their structures were identified by NMR and ESIMS analysis; three of these, 2,5-dimethoxy-3-glucopyranosyl cinnamic alcohol (11), foliasalacioside E2 (26), and icariside F2 (27), were obtained from this plant for the first time. Compounds 1-7 exhibited soluble epoxide hydrolase (sEH) inhibitory activity at 100 μM; among them, quercetin (1) and kaempferol (5) displayed potential activities with IC50 values of 22.5 ± 0.9 and 31.3 ± 2.6 μM, respectively, with noncompetitive inhibition mode. Nuclear factor kappa B (NF-κB) inhibitory activity of the isolated compounds was evaluated by the NF-κB liciferase assay in HepG2 cells. Compounds 1, 9, 20, and 27 displayed potent NF-κB inhibitory effects, with IC50 values of 15.14 ± 2.29, 15.23 ± 2.34, 16.88 ± 2.17, and 16.25 ± 2.19 μM, respectively, whereas other compounds showed weak inhibition of NF-κB transcriptional activity ranging from 17.54 to 92.6 μM. A structure-activity relationship of flavonoids 1-9 was also discussed. The results obtained in this work might contribute to the understanding of pharmacological activities of E. ulmoides leaves and further investigation on its potential application values for food and drug.
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Affiliation(s)
- Meng-Meng Bai
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University , Yangling 712100, Shaanxi, PR China
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9
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Seco JM, Quiñoá E, Riguera R. Assignment of the Absolute Configuration of Polyfunctional Compounds by NMR Using Chiral Derivatizing Agents. Chem Rev 2012; 112:4603-41. [DOI: 10.1021/cr2003344] [Citation(s) in RCA: 150] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- J. M. Seco
- Department of Organic
Chemistry and Center for Research in Biological
Chemistry and Molecular Materials (CIQUS), University of Santiago
de Compostela, E-15782 Santiago de Compostela, Spain
| | - E. Quiñoá
- Department of Organic
Chemistry and Center for Research in Biological
Chemistry and Molecular Materials (CIQUS), University of Santiago
de Compostela, E-15782 Santiago de Compostela, Spain
| | - R. Riguera
- Department of Organic
Chemistry and Center for Research in Biological
Chemistry and Molecular Materials (CIQUS), University of Santiago
de Compostela, E-15782 Santiago de Compostela, Spain
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10
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NAKAMURA S, MATSUDA H, YOSHIKAWA M. Search for Antidiabetic Constituents of Medicinal Food. YAKUGAKU ZASSHI 2011; 131:909-15. [DOI: 10.1248/yakushi.131.909] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Kiem PV, Cuong NX, Nhiem NX, Hang DTT, Nam NH, Ban NK, Minh CV, Bing Z, Jang HD, Kim YH. Chemical Constituents and Antioxidant Activity of Ficus callosa. Nat Prod Commun 2011. [DOI: 10.1177/1934578x1100600201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
One new megastigmane glycoside, ficalloside (1), and eleven known compounds, were isolated from methanol extract of Ficus callosa leaves by repeated column chromatography. Their structures were established on the basis of spectral and chemical evidence. The antioxidant activities of these compounds were measured using the oxygen radical absorbance capacity (ORAC) assay. Compound 8 exhibited potent antioxidant activity of 10.6 μM trolox equivalents at the concentration of 2 μM. At this concentration, compounds 4-7 and 9-12 showed significant antioxidant activity with ranging of 2.1~6.1 μM trolox equivalents.
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Affiliation(s)
- Phan Van Kiem
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Nguyen Xuan Cuong
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Nguyen Xuan Nhiem
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea
| | - Dan Thi Thuy Hang
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Nguyen Hoai Nam
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Ninh Khac Ban
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Chau Van Minh
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Zhou Bing
- Department of Food and Nutrition, Hannam University, Daejeon 305-811, Korea
| | - Hae Dong Jang
- Department of Food and Nutrition, Hannam University, Daejeon 305-811, Korea
| | - Young Ho Kim
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea
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12
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Nakamura S, Zhang Y, Matsuda H, Ninomiya K, Muraoka O, Yoshikawa M. Chemical Structures and Hepatoprotective Effects of Constituents from the Leaves of Salacia chinensis. Chem Pharm Bull (Tokyo) 2011; 59:1020-8. [PMID: 21804248 DOI: 10.1248/cpb.59.1020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | | | | | - Osamu Muraoka
- Pharmaceutical Research and Technology Institute, Kinki University
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13
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Matsunami K, Otsuka H, Takeda Y. Structural revisions of blumenol C glucoside and byzantionoside B. Chem Pharm Bull (Tokyo) 2010; 58:438-41. [PMID: 20190461 DOI: 10.1248/cpb.58.438] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The absolute stereochemistry of blumenol C glucoside and byzantionoside B was revised here as (6R,9S)- and (6R,9R)-9-hydroxymegastigman-4-en-3-one 9-O-beta-D-glucopyranosides, respectively, by modified Mosher's method. The empirical rules of (13)C-NMR chemical shift to determine the absolute stereochemistry of C-9 of 9-hydroxymegastigmane 9-O-beta-D-glucopyranoside were also discussed.
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Affiliation(s)
- Katsuyoshi Matsunami
- Department of Pharmacognosy, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima 734-8553, Japan
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14
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15
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Zhang Y, Nakamura S, Wang T, Matsuda H, Yoshikawa M. The absolute stereostructures of three rare D:B-friedobaccharane skeleton triterpenes from the leaves of Salacia chinensis. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.05.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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16
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Yoshikawa M, Zhang Y, Wang T, Nakamura S, Matsuda H. New Triterpene Constituents, Foliasalacins A 1—A 4, B 1—B 3, and C, from the Leaves of Salacia chinensis. Chem Pharm Bull (Tokyo) 2008; 56:915-20. [DOI: 10.1248/cpb.56.915] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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