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Tinguep Tchapnda NP, Njinkou Njambouo RB, Tchuendem Kenmogne MH, Djimeli Douanla P, Shiono Y, Tabopda TK. Cytotoxic constituents from the fruit of Solanum aculeastrum. Nat Prod Res 2024:1-9. [PMID: 38409661 DOI: 10.1080/14786419.2024.2320738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 02/12/2024] [Indexed: 02/28/2024]
Abstract
A new triterpene, aculeastrumone A (1), a new triterpene saponin aculeastrumoside A (2), and eleven known compounds (3-13) were isolated from MeOH/Water (80/20) extract of the fruits of Solanum aculeastrum (Solanaceae). Their structures were established by detailed 1D and 2D NMR spectroscopic studies and mass spectrometry. The isolated compounds were evaluated against three human cancer cells ((MCF-7 (breast cancer), NCI-H460 (lung cancer), and Hela (cervical cancer)) and normal human fibroblast (BJ) cell lines. Among them, saponins 2-5, 7-8, and Carpesterol 10 possess significant cytotoxic activity with IC50 ≤ 10 µM against the three cancer cell lines.
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Affiliation(s)
| | | | | | | | | | - Turibio Kuiate Tabopda
- Department of Organic Chemistry, University of Yaounde 1, Yaounde, Cameroon
- Faculty of Agriculture, Yamagata University, Yamagata, Japan
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2
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Kamdeu EN, Menye Nomo AN, Tchoukoua A, Ngomo O, Djimeli Douanla P, Tchuendem Kenmogne MH, Shiono Y, Tabopda TK. Schweinfurthiamide, a new alkaloid isolated from the tuber roots of Asparagus flagellaris Baker (Liliaceae). Nat Prod Res 2023:1-7. [PMID: 37722707 DOI: 10.1080/14786419.2023.2257358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 09/05/2023] [Indexed: 09/20/2023]
Abstract
The phytochemical investigations of the tuber roots of Asparagus flagellaris led to the isolation of a new alkaloid, schweinfurthiamide (1) and eight known compounds. The structures of the isolated compounds were elucidated using spectroscopic techniques 1D and 2D NMR (1H, 13C, COSY, HMBC, HMQC, HSQC-TOCSY). The absolute configuration of 1 was unambiguously determined using DP4+ calculations. Compound 1 showed significant cytotoxicity against MCF-7 (breast cancer), NCI-H460 (lung cancer), and Hela (cervical cancer) cancer cell lines with IC50 values of 1.18 ± 0.02 µM, 2.25 ± 0.19 µM, and 4.23 ± 0.26 µM, respectively and no toxicity against normal human fibroblast (BJ).
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Affiliation(s)
- Elodie Nguelami Kamdeu
- Department of Organic Chemistry, Faculty of Sciences, University of Yaounde 1, Yaounde, Cameroon
| | - Adèle Nicaise Menye Nomo
- Department of Organic Chemistry, Faculty of Sciences, University of Yaounde 1, Yaounde, Cameroon
| | - Abdou Tchoukoua
- Department of Chemistry, Faculty of Science, University of Maroua, Maroua, Cameroon
| | - Orleans Ngomo
- Department of Organic Chemistry, Faculty of Sciences, University of Yaounde 1, Yaounde, Cameroon
| | - Pascal Djimeli Douanla
- Department of Organic Chemistry, Faculty of Sciences, University of Yaounde 1, Yaounde, Cameroon
| | | | - Yoshihito Shiono
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata, Japan
| | - Turibio Kuiate Tabopda
- Department of Organic Chemistry, Faculty of Sciences, University of Yaounde 1, Yaounde, Cameroon
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata, Japan
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Metiefeng NT, Tamfu AN, Fotsing Tagatsing M, Tabopda TK, Kucukaydin S, Noah Mbane M, de Theodore Atchade A, Talla E, Henoumont C, Laurent S, Anouar EH, Dinica RM. In Vitro and In Silico Evaluation of Anticholinesterase and Antidiabetic Effects of Furanolabdanes and Other Constituents from Graptophyllum pictum (Linn.) Griffith. Molecules 2023; 28:4802. [PMID: 37375357 DOI: 10.3390/molecules28124802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/02/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Graptophyllum pictum is a tropical plant noticeable for its variegated leaves and exploited for various medicinal purposes. In this study, seven compounds, including three furanolabdane diterpenoids, i.e., Hypopurin E, Hypopurin A and Hypopurin B, as well as with Lupeol, β-sitosterol 3-O-β-d-glucopyranoside, stigmasterol 3-O-β-d-glucopyranoside and a mixture of β-sitosterol and stigmasterol, were isolated from G. pictum, and their structures were deduced from ESI-TOF-MS, HR-ESI-TOF-MS, 1D and 2D NMR experiments. The compounds were evaluated for their anticholinesterase activities against acetylcholinesterase (AChE) and butyrylcholinesterase (BchE), as well as their antidiabetic potential through inhibition of α-glucosidase and α-amylase. For AChE inhibition, no sample had IC50 within tested concentrations, though the most potent was Hypopurin A, which had a percentage inhibition of 40.18 ± 0.75%, compared to 85.91 ± 0.58% for galantamine, at 100 µg/mL. BChE was more susceptible to the leaves extract (IC50 = 58.21 ± 0.65 µg/mL), stem extract (IC50 = 67.05 ± 0.82 µg/mL), Hypopurin A (IC50 = 58.00 ± 0.90 µg/mL), Hypopurin B (IC50 = 67.05 ± 0.92 µg/mL) and Hypopurin E (IC50 = 86.90 ± 0.76 µg/mL). In the antidiabetic assay, the furanolabdane diterpenoids, lupeol and the extracts had moderate to good activities. Against α-glucosidase, lupeol, Hypopurin E, Hypopurin A and Hypopurin B had appreciable activities but the leaves (IC50 = 48.90 ± 0.17 µg/mL) and stem (IC50 = 45.61 ± 0.56 µg/mL) extracts were more active than the pure compounds. In the α-amylase assay, stem extract (IC50 = 64.47 ± 0.78 µg/mL), Hypopurin A (IC50 = 60.68 ± 0.55 µg/mL) and Hypopurin B (IC50 = 69.51 ± 1.30 µg/mL) had moderate activities compared to the standard acarbose (IC50 = 32.25 ± 0.36 µg/mL). Molecular docking was performed to determine the binding modes and free binding energies of Hypopurin E, Hypopurin A and Hypopurin B in relation to the enzymes and decipher the structure-activity relationship. The results indicated that G. pictum and its compounds could, in general, be used in the development of therapies for Alzheimer's disease and diabetes.
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Affiliation(s)
- Nathalie Tanko Metiefeng
- Department of Organic Chemistry, Faculty of Science, The University of Yaounde I, Yaounde 812, Cameroon
| | - Alfred Ngenge Tamfu
- Department of Chemical Engineering, School of Chemical Engineering and Mineral Industries, University of Ngaoundere, Ngaoundere 454, Cameroon
- Department of Medical Services and Techniques, Koycegiz Vocational School of Health Services, Mugla Sitki Kocman University, Mugla 48800, Turkey
- Department of Chemistry, Physics and Environment, Faculty of Sciences and Environment, 'Dunarea de Jos' University of Galati, 47 Domneasca Str., 800008 Galati, Romania
| | - Maurice Fotsing Tagatsing
- Department of Organic Chemistry, Faculty of Science, The University of Yaounde I, Yaounde 812, Cameroon
| | - Turibio Kuiate Tabopda
- Department of Organic Chemistry, Faculty of Science, The University of Yaounde I, Yaounde 812, Cameroon
| | - Selcuk Kucukaydin
- Department of Medical Services and Techniques, Koycegiz Vocational School of Health Services, Mugla Sitki Kocman University, Mugla 48800, Turkey
| | - Martin Noah Mbane
- Department of Organic Chemistry, Faculty of Science, The University of Yaounde I, Yaounde 812, Cameroon
| | - Alex de Theodore Atchade
- Department of Organic Chemistry, Faculty of Science, The University of Yaounde I, Yaounde 812, Cameroon
| | - Emmanuel Talla
- Department of Chemical Engineering, School of Chemical Engineering and Mineral Industries, University of Ngaoundere, Ngaoundere 454, Cameroon
| | - Celine Henoumont
- Laboratory of NMR and Molecular Imaging, Department of General, Organic and Biomedical Chemistry, University of Mons, B-7000 Mons, Belgium
| | - Sophie Laurent
- Laboratory of NMR and Molecular Imaging, Department of General, Organic and Biomedical Chemistry, University of Mons, B-7000 Mons, Belgium
| | - El Hassane Anouar
- Department of Chemistry, College of Sciences and Humanities in Al-Kharj, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Rodica Mihaela Dinica
- Department of Chemistry, Physics and Environment, Faculty of Sciences and Environment, 'Dunarea de Jos' University of Galati, 47 Domneasca Str., 800008 Galati, Romania
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Ndifor AR, Stanislaus NN, Fru CG, Talontsi F, Tabopda TK, Menkem EZ, Tchaleu NB, Owusu YS. Two new sphingolipids from the stem bark of Synsepalum msolo (Sapotaceae). Biochem Biophys Rep 2021; 27:101014. [PMID: 34159261 PMCID: PMC8202346 DOI: 10.1016/j.bbrep.2021.101014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 04/28/2021] [Accepted: 05/02/2021] [Indexed: 10/29/2022] Open
Abstract
Synsepalum msolo commonly known as Bang Bali in Bali-Nguemba, Cameroon is used in traditional medicine against various diseases. The leaves and stem bark extracts were subjected to silica gel and Sephadex LH20 column chromatography to yield pure compounds. The structures of the compounds were determined by detail analysis of NMR and Mass spectroscopic data and by comparison with data reported in the literature. Amongst the isolates, were two new sphingolipids: synsepaloside B (1), synsepaloside C (2), and five known compounds: (+)-catechin (3), (-)-epicatechin (4), myricitrin (5), triacontanol (6), and aurantiamide acetate (7). Compounds 1-5 were screened for their antibacterial and anti-yeast activities on several microorganisms. All the tested compounds exhibited weak antibacterial (MIC ≥ 200 μg/mL) and anti-yeast (MIC > 200 μg/mL) activities as compared to standard: ciprofloxacin 0.468 < MIC >0.234 μg/mL and fluconazole MIC = 0.05 μg/mL, respectively.
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Affiliation(s)
- Ache Roland Ndifor
- Higher Technical Teacher Training College, University of Bamenda, Cameroon
| | | | - Chi Godloves Fru
- Department of Organic Chemistry, Faculty of Science, University of Yaounde I, Cameroon
| | - Ferdinand Talontsi
- Institute of Environmental Research (INFU), Faculty of Chemistry, TU Dortmund, Otto-Hahn-Str, 644221, Dortmund, Germany
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Tchoukoua A, Tabopda TK, Usukhbayar N, Kimura KI, Kwon E, Momma H, Koseki T, Shiono Y, Ngadjui BT. New triterpene saponins from the roots of Acacia macrostachya (Mimosaceae). Biosci Biotechnol Biochem 2017; 81:2261-2267. [PMID: 29052455 DOI: 10.1080/09168451.2017.1390393] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Four new oleanane-type saponins, macrostachyaosides A, B, C, and D (1-4) were isolated from the roots of Acacia macrostachya. Their structures were elucidated on the basis of extensive 1D- and 2D-NMR data and HR-ESI-MS analyses. At concentrations of 100 μM of each compounds, none of the tested compounds caused a significant growth reduction against HL60 cells.
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Affiliation(s)
- Abdou Tchoukoua
- a Department of Organic Chemistry , University of Yaounde 1 , Yaounde , Cameroon.,b Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | | | - Narandulam Usukhbayar
- c The United Graduate School of Agricultural Sciences , Iwate University , Morioka , Japan
| | - Ken-Ichi Kimura
- c The United Graduate School of Agricultural Sciences , Iwate University , Morioka , Japan
| | - Eunsang Kwon
- d Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Hiroyuki Momma
- d Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Takuya Koseki
- b Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Yoshihito Shiono
- b Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Bonaventure Tchaleu Ngadjui
- a Department of Organic Chemistry , University of Yaounde 1 , Yaounde , Cameroon.,e Department of Medicine and Traditional Pharmacopoeia, Faculty of Medicine and Biomedical Sciences , University of Yaounde 1 , Yaounde , Cameroon
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6
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Tchoukoua A, Kuiate Tabopda T, Konga Simo I, Uesugi S, Ohno M, Kimura KI, Kwon E, Momma H, Shiono Y, Ngadjui BT. Albidosides H and I, two new triterpene saponins from the barks of Acacia albida Del. (Mimosaceae). Nat Prod Res 2017; 32:924-932. [PMID: 28868920 DOI: 10.1080/14786419.2017.1371156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Two new triterpene saponins, albidosides H (1) and I (2), along with the three known saponins were isolated from the barks of Acacia albida. Their structures were elucidated on the basis of extensive 1D- and 2D-NMR studies and mass spectrometry. Albidosides H (1) and I (2) were assayed for their cytotoxicity against HeLa and HL60 cells using MTT method.
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Affiliation(s)
- Abdou Tchoukoua
- a Department of Organic Chemistry , University of Yaounde 1 , Yaounde , Cameroon.,b Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | | | - Ingrid Konga Simo
- c Department of Chemistry , University of Dschang , Dschang , Cameroon
| | - Shota Uesugi
- d Laboratory of Chemical Biology , The United Graduate School of Agricultural Sciences, Iwate University , Morioka , Japan
| | - Misa Ohno
- d Laboratory of Chemical Biology , The United Graduate School of Agricultural Sciences, Iwate University , Morioka , Japan
| | - Ken-Ichi Kimura
- d Laboratory of Chemical Biology , The United Graduate School of Agricultural Sciences, Iwate University , Morioka , Japan.,e Graduate School of Agriculture , Iwate University , Morioka , Japan
| | - Eunsang Kwon
- f Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Hiroyuki Momma
- f Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Yoshihito Shiono
- b Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Bonaventure Tchaleu Ngadjui
- a Department of Organic Chemistry , University of Yaounde 1 , Yaounde , Cameroon.,g Faculty of Medicine and Biomedical Sciences, Department of Medicine and Traditional Pharmacopoeia , University of Yaounde 1 , Yaounde , Cameroon
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Tchoukoua A, Tabopda TK, Uesugi S, Ohno M, Kimura KI, Kwon E, Momma H, Horo I, Çalişkan ÖA, Shiono Y, Ngadjui BT. Triterpene saponins from the roots of Acacia albida Del. (Mimosaceae). Phytochemistry 2017; 136:31-38. [PMID: 28043655 DOI: 10.1016/j.phytochem.2016.12.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 12/21/2016] [Accepted: 12/22/2016] [Indexed: 06/06/2023]
Abstract
Seven previously undescribed bidesmosidic triterpenoid saponins named albidosides A - G, were isolated from a methanol extract of the roots of Acacia albida. Their structures were elucidated using 1D and 2D NMR spectroscopy and mass spectrometry and determined to be bidesmosides of oleanolic acid and of 16α-hydroxyoleanolic acid. Albidosides B - G were assayed for their cytotoxicity against HeLa and HL60 cells using MTT method and microscopic observation.
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Affiliation(s)
- Abdou Tchoukoua
- Department of Organic Chemistry, University of Yaounde 1, P.O. Box 812, Yaounde, Cameroon; Faculty of Agriculture, Yamagata University, 1-23, Wakaba-machi, Tsuruoka, Yamagata, 997-8555, Japan
| | - Turibio Kuiate Tabopda
- Department of Organic Chemistry, University of Yaounde 1, P.O. Box 812, Yaounde, Cameroon.
| | - Shota Uesugi
- Laboratory of Chemical Biology, The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Misa Ohno
- Laboratory of Chemical Biology, The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Ken-Ichi Kimura
- Laboratory of Chemical Biology, The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate 020-8550, Japan; Graduate School of Agriculture, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Ibrahim Horo
- Department of Chemistry, Faculty of Science, Ege University, 35100, Bornova, İzmir, Turkey
| | - Özgen Alankuş Çalişkan
- Department of Chemistry, Faculty of Science, Ege University, 35100, Bornova, İzmir, Turkey
| | - Yoshihito Shiono
- Faculty of Agriculture, Yamagata University, 1-23, Wakaba-machi, Tsuruoka, Yamagata, 997-8555, Japan.
| | - Bonaventure Tchaleu Ngadjui
- Department of Organic Chemistry, University of Yaounde 1, P.O. Box 812, Yaounde, Cameroon; Department of Medicine and Traditional Pharmacopoeia, Faculty of Medicine and Biomedical Sciences, University of Yaounde 1, P.O. Box 1364, Yaoundé, Cameroon.
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Tchoukoua A, Kuiate Tabopda T, Uesugi S, Kimura KI, Kwon E, Momma H, Ngadjui BT, Koseki T, Shiono Y. Two new 5-deoxyflavan-3,4-diol glucosides from roots of Albizia chevalieri. Magn Reson Chem 2016; 54:893-896. [PMID: 27546306 DOI: 10.1002/mrc.4504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/13/2016] [Accepted: 08/17/2016] [Indexed: 06/06/2023]
Abstract
Phytochemical investigation of the roots of Albizia chevalieri led to the isolation of two new 5-deoxyflavan-3,4-diol glucosides from roots of A. chevalieri, Chevalieriflavanosides A and B. Their structures were established by 2D NMR techniques, UV, IR, CD, and mass spectrometry. Cytotoxicity of the two compounds was evaluated against acute promyelocytic leukemia HL60 cells. The antibacterial activities of 1 and 2 also were evaluated against Pseudomonas aeruginosa and Staphylococcus aureus using the agar diffusion test. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Abdou Tchoukoua
- Département de Chimie Organique, Université de Yaoundé 1, Yaoundé, Cameroun
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata, Japan
| | | | - Shota Uesugi
- The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate, Japan
| | - Ken-Ichi Kimura
- The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate, Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai, Miyagi, Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai, Miyagi, Japan
| | | | - Takuya Koseki
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata, Japan
| | - Yoshihito Shiono
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata, Japan.
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Tabopda TK, Mitaine-Offer AC, Paululat T, Delemasure S, Dutartre P, Ngadjui BT, Lacaille-Dubois MA. Steroidal saponins from Chlorophytum deistelianum. Phytochemistry 2016; 126:34-40. [PMID: 27012932 DOI: 10.1016/j.phytochem.2016.03.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 03/04/2016] [Accepted: 03/07/2016] [Indexed: 06/05/2023]
Abstract
Phytochemical investigation of the aerial parts of Chlorophytum deistelianum led to the isolation of four previously undescribed steroidal saponins called chlorodeistelianosides A-D with five known ones. Their structures were established mainly by extensive 1D and 2D NMR spectroscopic techniques and mass spectrometry as (25R)-3β-[(β-D-glucopyranosyl-(1→3)-[α-L-rhamnopyranosyl-(1→4)]-β-D-xylopyranosyl-(1→3)-[β-D-glucopyranosyl-(1→2)]-β-D-glucopyranosyl-(1→4)-β-D-galactopyranosyl)oxy]-5α-spirostan-12-one, (24S,25S)-24-[(β-D-glucopyranosyl)oxy]-3β-[(β-d-glucopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→3)]-β-D-glucopyranosyl-(1→4)-β-D-galactopyranosyl)oxy]-5α-spirostan-12-one, (25R)-26-[(β-D-glucopyranosyl)oxy]-2α-hydroxy-22α-methoxy-5α-furostan-3β-yl β-D-glucopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→3)]-β-D-glucopyranosyl-(1→4)-β-D-galactopyranoside, and (25R)-26-[(β-D-glucopyranosyl)oxy]-3β-[(β-D-glucopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→3)]-β-D-glucopyranosyl-(1→4)-β-D-galactopyranosyl)oxy]-5α-furost-20(22)-en-12-one. Cytotoxicity of most compounds was evaluated against one human cancer cell line (SW480) and one rat cardiomyoblast cell line (H9c2). Among them, three known spirostane-type glycosides exhibited cytotoxicity on both cell lines with IC50 ranging from 8 to 10 μM.
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Affiliation(s)
- Turibio Kuiate Tabopda
- Laboratoire de Pharmacognosie, EA 4267/UFC, UFR des Sciences de Santé, Université de Bourgogne Franche-Comté, 7, Bd. Jeanne d'Arc, BP 87900, 21079 Dijon Cedex, France; Département de Chimie Organique, Université de Yaoundé 1, BP 812 Yaoundé, Cameroon
| | - Anne-Claire Mitaine-Offer
- Laboratoire de Pharmacognosie, EA 4267/UFC, UFR des Sciences de Santé, Université de Bourgogne Franche-Comté, 7, Bd. Jeanne d'Arc, BP 87900, 21079 Dijon Cedex, France
| | - Thomas Paululat
- Universität Siegen, FB8, OC-II (AK Ihmels), Adolf-Reichwein-Strasse 2, D-57068 Siegen, Germany
| | - Stéphanie Delemasure
- Cohiro, UFR des Sciences de Santé, 7, Bd. Jeanne d'Arc, BP 87900, 21079 Dijon Cedex, France
| | - Patrick Dutartre
- Cohiro, UFR des Sciences de Santé, 7, Bd. Jeanne d'Arc, BP 87900, 21079 Dijon Cedex, France
| | | | - Marie-Aleth Lacaille-Dubois
- Laboratoire de Pharmacognosie, EA 4267/UFC, UFR des Sciences de Santé, Université de Bourgogne Franche-Comté, 7, Bd. Jeanne d'Arc, BP 87900, 21079 Dijon Cedex, France.
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Douanla PD, Tabopda TK, Tchinda AT, Cieckiewicz E, Frédérich M, Boyom FF, Tsabang N, Yeboah S, Nkengfack AE, Tchuendem MHK. Antrocarines A-F, antiplasmodial ergostane steroids from the stem bark of Antrocaryon klaineanum. Phytochemistry 2015; 117:521-526. [PMID: 26232555 DOI: 10.1016/j.phytochem.2015.07.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 06/24/2015] [Accepted: 07/15/2015] [Indexed: 06/04/2023]
Abstract
During a study on the chemistry and biological activity of Antrocaryon klaineanum Pierre, six new sterols including 4,24(28)-ergostadiene-6α,7α-diol (1), 6α-methoxy-4,24(28)-ergostadiene-7α,20S-diol (2), 6α-methoxy-4,24(28)-ergostadien-7α-ol (3), 20S-hydroxy-24(28)-ergosten-3-one (4), 7α-hydroxy-4,24(28)-ergostadien-3-one (5), and 24(28)-ergostene-3β,6α-diol (6) were characterized by physical and spectroscopic means. The known steroids 7 and 8 were also isolated. The crude extract and the isolated compounds were evaluated for their ability to inhibit the 3D7 strain of Plasmodium falciparum. Compounds 2, 3, and 8 showed potent activity while that of the crude extract was moderate.
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Affiliation(s)
- Pascal D Douanla
- Department of Organic Chemistry, Faculty of Science, The University of Yaounde-1, P.O. Box 812, Yaounde, Cameroon
| | - Turibio Kuiate Tabopda
- Department of Organic Chemistry, Faculty of Science, The University of Yaounde-1, P.O. Box 812, Yaounde, Cameroon
| | - Alembert T Tchinda
- Laboratory of Phytochemistry, Institute of Medical Research and Medicinal Plant Studies, (IMPM), P.O. Box 6163, Yaounde, Cameroon
| | - Ewa Cieckiewicz
- Université de Liège, Laboratoire de Pharmacognosie, Centre Interfacultaire de Recherche sur le médicament (CIRM), Département de Pharmacie, Université de Liège, B36, B-4000 Liège, Belgium
| | - Michel Frédérich
- Université de Liège, Laboratoire de Pharmacognosie, Centre Interfacultaire de Recherche sur le médicament (CIRM), Département de Pharmacie, Université de Liège, B36, B-4000 Liège, Belgium
| | - Fabrice Fekam Boyom
- Department of Biochemistry, Faculty of Science, The University of Yaounde-1, P.O. Box 812, Yaounde, Cameroon
| | - Nole Tsabang
- Laboratory of Phytochemistry, Institute of Medical Research and Medicinal Plant Studies, (IMPM), P.O. Box 6163, Yaounde, Cameroon
| | - Samuel Yeboah
- Department of Chemistry, University of Botswana, Private Bag 00704, Gaborone, Botswana
| | - Augustin E Nkengfack
- Department of Organic Chemistry, Faculty of Science, The University of Yaounde-1, P.O. Box 812, Yaounde, Cameroon
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Ngoupayo J, Tabopda TK, Ali MS, Ngadjui BT, Lacaille-Dubois MA. Antioxidant stilbenoid and flavanonol from stem of Erythrophleum suaveolens (Guill. & Perr.). Magn Reson Chem 2015; 53:612-615. [PMID: 26017640 DOI: 10.1002/mrc.4253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 03/23/2015] [Accepted: 03/30/2015] [Indexed: 06/04/2023]
Affiliation(s)
- Joseph Ngoupayo
- Département de Pharmacognosie et de Chimie Pharmaceutique, Faculté de Médecine et des Sciences Biomédicales, Université de Yaoundé 1, BP, 1364, Yaoundé, Cameroon
| | | | - Muhammad Shaiq Ali
- H.E.J. Research Institute of Chemistry, University of Karachi, Karachi, 75270, Pakistan
| | | | - Marie-Aleth Lacaille-Dubois
- Laboratoire de Pharmacognosie, UMIB, UPRES-EA 3660, Faculté de Pharmacie, Université de Bourgogne, 7, Bd. Jeanne d'Arc, BP 87900, 21079, Dijon Cedex, France
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Tabopda TK, Mitaine-Offer AC, Tanaka C, Miyamoto T, Mirjolet JF, Duchamp O, Ngadjui BT, Lacaille-Dubois MA. Steroidal saponins from Dioscorea preussii. Fitoterapia 2014; 97:198-203. [PMID: 24928475 DOI: 10.1016/j.fitote.2014.06.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 06/02/2014] [Accepted: 06/03/2014] [Indexed: 11/30/2022]
Abstract
Three new steroidal saponins, named diospreussinosides A-C (1-3), along with two known ones (4, 5) were isolated from rhizomes of Dioscorea preussii. Their structures were elucidated mainly by 1D and 2D NMR spectroscopic analysis and mass spectrometry as (25S)-17α,25-dihydroxyspirost-5-en-3β-yl-O-α-L-rhamnopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranoside (1), (25S)-17α,25-dihydroxyspirost-5-en-3β-yl-O-α-L-rhamnopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→4)-[α-L-rhamnopyranosyl-(1→2)]-β-D-glucopyranoside (2), and (24S,25R)-17α,24,25-trihydroxyspirost-5-en-3β-yl-O-α-L-rhamnopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→4)-[α-L-rhamnopyranosyl-(1→2)]-β-D-glucopyranoside (3). The spirostane-type skeleton of compound 3 possessing an unusual dihydroxylation pattern on the F-ring is reported for the first time. Cytotoxicity of compounds 2-5 was evaluated against two human colon carcinoma cell lines (HT-29 and HCT 116).
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Affiliation(s)
- Turibio Kuiate Tabopda
- EA 4267 (FDE/UFC), Laboratoire de Pharmacognosie, Faculté de Pharmacie, Université de Bourgogne, 7, Bd. Jeanne d'Arc, BP 87900, 21079 Dijon CEDEX, France; Département de Chimie Organique, Université de Yaoundé 1, BP 812, Yaoundé, Cameroun
| | - Anne-Claire Mitaine-Offer
- EA 4267 (FDE/UFC), Laboratoire de Pharmacognosie, Faculté de Pharmacie, Université de Bourgogne, 7, Bd. Jeanne d'Arc, BP 87900, 21079 Dijon CEDEX, France
| | - Chiaki Tanaka
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Tomofumi Miyamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | | | - Olivier Duchamp
- Oncodesign, 20 rue Jean Mazen, BP 27627, 21076 Dijon CEDEX, France
| | | | - Marie-Aleth Lacaille-Dubois
- EA 4267 (FDE/UFC), Laboratoire de Pharmacognosie, Faculté de Pharmacie, Université de Bourgogne, 7, Bd. Jeanne d'Arc, BP 87900, 21079 Dijon CEDEX, France.
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Tabopda TK, Mitaine-Offer AC, Miyamoto T, Tanaka C, Ngadjui BT, Lacaille-Dubois MA. Secondary Metabolites from Polar Fractions of Piper umbellatum. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Seven known secondary metabolites were isolated from the methanol extract of the branches of Piper umbellatum. The identification of these compounds was mainly achieved by 2D NMR spectroscopic techniques and FAB-MS. Among them, the known cepharadiones A and B can be considered as chemotaxonomic markers of the genus Piper.
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Affiliation(s)
- Turibio Kuiate Tabopda
- EA 4267-FDE/UFC, Laboratoire de Pharmacognosie, Faculté de Pharmacie, Université de Bourgogne, 7, Bd Jeanne d'Arc, BP 87900, 21079 Dijon cedex, France
- Département de Chimie Organique, Université de Yaoundé I, BP 812 Yaoundé Cameroun
| | - Anne-Claire Mitaine-Offer
- EA 4267-FDE/UFC, Laboratoire de Pharmacognosie, Faculté de Pharmacie, Université de Bourgogne, 7, Bd Jeanne d'Arc, BP 87900, 21079 Dijon cedex, France
| | - Tomofumi Miyamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Chiaki Tanaka
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | | | - Marie-Aleth Lacaille-Dubois
- EA 4267-FDE/UFC, Laboratoire de Pharmacognosie, Faculté de Pharmacie, Université de Bourgogne, 7, Bd Jeanne d'Arc, BP 87900, 21079 Dijon cedex, France
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Tabopda TK, Mitaine-Offer AC, Miyamoto T, Tanaka C, Ngadjuic BT, Lacaille-Dubois MA. Secondary metabolites from polar fractions of Piper umbellatum. Nat Prod Commun 2012; 7:595-596. [PMID: 22799083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
Seven known secondary metabolites were isolated from the methanol extract of the branches of Piper umbellatum. The identification of these compounds was mainly achieved by 2D NMR spectroscopic techniques and FAB-MS. Among them, the known cepharadiones A and B can be considered aschemotaxonomic markers of the genus Piper.
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Affiliation(s)
- Turibio Kuiate Tabopda
- EA 4267-FDE/UFC, Laboratoire de Pharmacognosie, Faculté de Pharmacie, Universitd de Bourgogne, 7, Bd Jeanne d'Arc, BP 87900, 21079 Dijon cedex, France
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Tabopda TK, Mitaine-Offer AC, Miyamoto T, Tanaka C, Mirjolet JF, Duchamp O, Ngadjui BT, Lacaille-Dubois MA. Triterpenoid saponins from Hydrocotyle bonariensis Lam. Phytochemistry 2012; 73:142-147. [PMID: 22019087 DOI: 10.1016/j.phytochem.2011.08.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Revised: 08/26/2011] [Accepted: 08/31/2011] [Indexed: 05/31/2023]
Abstract
Phytochemical investigation of the under-ground parts of Hydrocotyle bonariensis led to the isolation of five oleanane-type triterpenoid saponins, 3-O-{β-D-glucopyranosyl-(1 → 2)-[α-L-arabinopyranosyl-(1 → 3)]-β-D-glucuronopyranosyl}-21-O-(2-methylbutyroyl)-22-O-acetyl-R(1)-barrigenol, 3-O-{β-D-glucopyranosyl-(1 → 2)-[α-L-arabinopyranosyl-(1 → 3)]-β-D-glucuronopyranosyl}-21-O-(2-methylbutyroyl)-28-O-acetyl-R(1)-barrigenol, 3-O-{β-D-glucopyranosyl-(1 → 2)-[α-L-arabinopyranosyl-(1 → 3)]-β-D-glucuronopyranosyl}-21-O-acetyl-R(1)-barrigenol, 3-O-{β-D-glucopyranosyl-(1 → 2)-[α-L-arabinopyranosyl-(1 → 3)]-β-D-glucuronopyranosyl}-R(1)-barrigenol, and 3-O-{β-D-glucopyranosyl-(1 → 2)-[α-L-arabinopyranosyl-(1 → 3)]-β-D-glucuronopyranosyl}-22-O-(2-methylbutyroyl)-A(1)-barrigenol, together with the known saniculoside-R1. Their structures were established by 2D NMR techniques and mass spectrometry. Six compounds were evaluated against two human colon cancer cell lines, HCT 116 and HT-29. Two compounds showed weak cytotoxicity with IC(50) 24.1 and 24.0, 83.0 and 83.6 μM against HT-29 and HCT 116, respectively.
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Affiliation(s)
- Turibio Kuiate Tabopda
- Laboratoire de Pharmacognosie, UMIB, UPRES-EA 3660, Faculté de Pharmacie, Université de Bourgogne, 7 Bd Jeanne d'Arc, BP 87900, 21079 Dijon Cedex, France
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Tabopda TK, Mitaine-Offer AC, Miyamoto T, Tanaka C, Mirjolet JF, Duchamp O, Ngadjui BT, Lacaille-Dubois MA. Acylated Triterpene Saponins from Atroxima libericaStapf. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201100147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ngoupayo J, Tabopda TK, Ali MS. Antimicrobial and immunomodulatory properties of prenylated xanthones from twigs of Garcinia staudtii. Bioorg Med Chem 2009; 17:5688-95. [DOI: 10.1016/j.bmc.2009.06.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2009] [Revised: 05/30/2009] [Accepted: 06/05/2009] [Indexed: 11/25/2022]
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Tabopda TK, Ngoupayo J, Liu JW, Mitaine-Offer AC, Ngadjui BT, Lacaille-Dubois MA, Luu B. Induction of Neuronal Differentiation in Neurosphere Stem Cells by Ellagic Acid Derivatives. Nat Prod Commun 2009. [DOI: 10.1177/1934578x0900400415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A bioassay-guided fractionation of methanol extracts of stem barks, combined with screening based on Epidermal Growth Factor (EGF)-responsive neural stem cells (erNSCs) differentiation assay, has been used. This study resulted in the isolation of 3,3′-di- O-methylellagic acid 1, 3,3′-di- O-methyl ellagic acid-4- O-β-D-xylopyranoside 2, ellagic acid 3, and arjunolic acid 4. Among them, compounds 1 and 2 exhibit potent induction of neuronal differentiation in neurosphere stem cells with no cytotoxic effect. These results indicate that compounds 1 and 2 may be useful as pharmacological agents for the treatment of neurodegenerative diseases. These compounds may account, for the use of T. superba in folk medicine for nervous system and mental disorders.
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Affiliation(s)
| | - Joseph Ngoupayo
- Département de Chimie Organique, Université de Yaoundé I, BP 812 Yaoundé, Cameroun
| | - Jia Wei Liu
- Laboratoire de Chimie Organique des Substances Naturelles, LC3-UMR 7177 CNRS-Université Louis Pasteur, Centre de Neurochimie, 5 Rue Blaise Pascal 67084 Strasbourg, France
| | - Anne-Claire Mitaine-Offer
- Université de Bourgogne, Faculté de Pharmacie, Laboratoire de Pharmacognosie, UMIB UPRES EA 3660, 7, Bd Jeanne d'Arc – B.P. 87900, 21079 Dijon cedex, France
| | | | - Marie-Aleth Lacaille-Dubois
- Université de Bourgogne, Faculté de Pharmacie, Laboratoire de Pharmacognosie, UMIB UPRES EA 3660, 7, Bd Jeanne d'Arc – B.P. 87900, 21079 Dijon cedex, France
| | - Bang Luu
- Laboratoire de Chimie Organique des Substances Naturelles, LC3-UMR 7177 CNRS-Université Louis Pasteur, Centre de Neurochimie, 5 Rue Blaise Pascal 67084 Strasbourg, France
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Tabopda TK, Ngoupayo J, Khan Tanoli SA, Mitaine-Offer AC, Ngadjui BT, Ali MS, Luu B, Lacaille-Dubois MA. Antimicrobial pentacyclic triterpenoids from Terminalia superba. Planta Med 2009; 75:522-527. [PMID: 19214947 DOI: 10.1055/s-0029-1185328] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Antibacterial bioassay-guided fractionation of the methanol extract of the stem bark of Terminalia superba led to the isolation of four new triterpene glucosides (1-4) which were characterized as 2 alpha,3 beta-dihydroxyolean-12-en-28-oic acid 28-O-beta-D-glucopyranoside (1), 2 alpha,3 beta, 21 beta-trihydroxyolean-12-en-28-oic acid 28-O-beta-D-glucopyranoside (2), 2 alpha,3 beta, 29-trihydroxyolean-12-en-28-oic acid 28-O-beta-D-glucopyranoside (3) and 2 alpha,3 beta,23,27-tetrahydroxyolean-12-en-28-oic acid 28-O-beta-D-glucopyranoside (4) together with the known triterpene 2 alpha,3 beta,23-trihydroxyolean-12-en-28-oic acid (5). Structures were established by spectroscopic methods including one- and two-dimensional NMR, EI-MS and HR-EI-MS. The antibacterial activity of 1-5 was also investigated against two gram-positive (Bacillus subtilis, Staphylococcus aureus), and four gram-negative (Escherichia coli, Shigella flexenari, Pseudomonas aeruginosa, Salmonella typhi) bacterial strains.
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Tabopda TK, Ngoupayo J, Liu JW, Mitaine-Offer AC, Ngadjui BT, Lacaille-Dubois MA, Luu B. Induction of neuronal differentiation in neurosphere stem cells by ellagic acid derivatives. Nat Prod Commun 2009; 4:517-520. [PMID: 19475997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
A bioassay-guided fractionation of methanol extracts of stem barks, combined with screening based on Epidermal Growth Factor (EGF)-responsive neural stem cells (erNSCs) differentiation assay, has been used. This study resulted in the isolation of 3,3'-di-O-methylellagic acid 1, 3,3'-di-O-methyl ellagic acid-4-O-beta-D-xylopyranoside 2, ellagic acid 3, and arjunolic acid 4. Among them, compounds 1 and 2 exhibit potent induction of neuronal differentiation in neurosphere stem cells with no cytotoxic effect. These results indicate that compounds 1 and 2 may be useful as pharmacological agents for the treatment of neurodegenerative diseases. These compounds may account, for the use of T. superba in folk medicine for nervous system and mental disorders.
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Tabopda TK, Ngoupayo J, Liu J, Mitaine-Offer AC, Tanoli SAK, Khan SN, Ali MS, Ngadjui BT, Tsamo E, Lacaille-Dubois MA, Luu B. Bioactive aristolactams from Piper umbellatum. Phytochemistry 2008; 69:1726-31. [PMID: 18400239 DOI: 10.1016/j.phytochem.2008.02.018] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2007] [Revised: 02/18/2008] [Accepted: 02/22/2008] [Indexed: 05/09/2023]
Abstract
Four alkaloids named piperumbellactams A-D (1-4) were isolated from branches of Piper umbellatum together with known N-hydroxyaristolam II (5), N-p-coumaroyl tyramine (6), 4-nerolidylcatechol (7), N-trans-feruloyltyramine, E-3-(3,4-dihydroxyphenyl)-N-2-[4-hydroxyphenylethyl]-2-propenamide, beta-amyrin, friedelin, apigenin 8-C-neohesperidoside, acacetin 6-C-beta-d-glucopyranoside, beta-sitosterol, its 3-O-beta-d-glucopyranoside and its 3-O-beta-d-[6'-dodecanoyl]-glucopyranoside. Glycosidase inhibition, antioxidant and antifungal activities of these compounds were evaluated. Compounds 1-3 showed moderate alpha-glucosidase enzyme inhibition with IC50 values 98.07+/-0.44, 43.80+/-0.56 and 29.64+/-0.46, respectively. In DPPH radical scavenging assay, compounds 2, 3 and 6 showed potent inhibitory activity while compounds 4, 5 and 7 showed potent antifungal activity.
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Affiliation(s)
- Turibio Kuiate Tabopda
- Laboratoire de Chimie Organique des Substances Naturelles, LC3-UMR 7177 CNRS, Université Louis Pasteur, Centre de Neurochimie, 5 Rue Blaise Pascal, 67084 Strasbourg, France.
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Ngoupayo J, Tabopda TK, Ali MS, Tsamo E. .ALPHA.-Glucosidase Inhibitors from Garcinia brevipedicellata (Clusiaceae). Chem Pharm Bull (Tokyo) 2008; 56:1466-9. [DOI: 10.1248/cpb.56.1466] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | - Muhammad Shaiq Ali
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi
| | - Etienne Tsamo
- Département de Chimie Organique, Université de Yaoundé I
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Tabopda TK, Ngoupayo J, Liu J, Ali MS, Khan SN, Ngadjui BT, Luu B. .ALPHA.-Glucosidase Inhibitors Ellagic Acid Derivatives with Immunoinhibitory Properties from Terminalia superba. Chem Pharm Bull (Tokyo) 2008; 56:847-50. [DOI: 10.1248/cpb.56.847] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Turibio Kuiate Tabopda
- Département de Chimie Organique, Université de Yaoundé I
- Laboratoire de Chimie Organique des Substances Naturelles, UMR 7177 CNRS-Université Louis Pasteur
| | | | - Jiawei Liu
- Laboratoire de Chimie Organique des Substances Naturelles, UMR 7177 CNRS-Université Louis Pasteur
| | - Muhammad Shaiq Ali
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences University of Karachi
| | - Shamsun Nahar Khan
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences University of Karachi
| | | | - Bang Luu
- Laboratoire de Chimie Organique des Substances Naturelles, UMR 7177 CNRS-Université Louis Pasteur
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Tabopda TK, Ngoupayo J, Liu J, Shaiq Ali M, Khan SN, Ngadjui BT, Luu B. Further Cytotoxic Sesquiterpene Lactones from Elephantopus mollis KUNTH. Chem Pharm Bull (Tokyo) 2008; 56:231-3. [DOI: 10.1248/cpb.56.231] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Turibio Kuiate Tabopda
- Département de Chimie Organique, Université de Yaoundé I
- Laboratoire de Chimie Organique des Substances Naturelles, UMR 7177 CNRS–Université Louis Pasteur
| | | | - Jiawei Liu
- Laboratoire de Chimie Organique des Substances Naturelles, UMR 7177 CNRS–Université Louis Pasteur
| | | | | | | | - Bang Luu
- Laboratoire de Chimie Organique des Substances Naturelles, UMR 7177 CNRS–Université Louis Pasteur
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Tabopda TK, Liu J, Ngadjui BT, Luu B. Cytotoxic triterpene and sesquiterpene lactones from Elephantopus mollis and induction of apoptosis in neuroblastoma cells. Planta Med 2007; 73:376-80. [PMID: 17366372 DOI: 10.1055/s-2007-967132] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Activity-guided fractionation of root and leaf extracts from Elephantopus mollis led to the isolation of a new triterpene (1) and a new sesquiterpene lactone (2) together with five known sesquiterpene lactones (3-7). The structures of compounds 1 and 2 were determined based on their spectroscopic data. The cytotoxic activity of the isolated compounds was evaluated against neuroblastoma B104 cells. The sesquiterpene lactone-type compounds 2-7 were highly cytotoxic. Among these, compound (5) was the most cytotoxic and induced apoptosis of neuroblastoma B104 cells in a dose- and time-dependent manner. No significant difference was observed for cytotoxicity of compound 5 towards all 3 cell lines tested.
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Affiliation(s)
- Turibio Kuiate Tabopda
- Laboratoire de Chimie Organique des Substances Naturelles, LC3-UMR 7177 CNRS - Université Louis Pasteur, Centre de Neurochimie, Strasbourg, France
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