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Waleguele CC, Mba’ning BM, Awantu AF, Bankeu JJK, Fongang YSF, Ngouela AS, Tsamo E, Sewald N, Lenta BN, Krause RWM. Antiparasitic Constituents of Beilschmiedia louisii and Beilschmiedia obscura and Some Semisynthetic Derivatives (Lauraceae). Molecules 2020; 25:molecules25122862. [PMID: 32575860 PMCID: PMC7357032 DOI: 10.3390/molecules25122862] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 11/16/2022] Open
Abstract
The MeOH/CH2Cl2 (1:1) extracts of the roots and leaves of Beilschmiedia louisii and B. obscura showed potent antitrypanosomal activity during preliminary screening on Trypanosoma brucei brucei. Phytochemical investigation of these extracts led to the isolation of a mixture of two new endiandric acid derivatives beilschmiedol B (1) and beilschmiedol C (2), and one new phenylalkene obscurene A (3) together with twelve known compounds (4–15). In addition, four new derivatives (11a–11d) were synthesized from compound 11. Their structures were elucidated based on their NMR and MS data. Compounds 5, 6, and 7 were isolated for the first time from the Beilschmiedia genus. Additionally, the NMR data of compound 4 are given here for the first time. The isolates were evaluated for their antitrypanosomal and antimalarial activities against Tb brucei and the Plasmodium falciparum chloroquine-resistant strain Pf3D7 in vitro, respectively. From the tested compounds, the mixture of new compounds 1 and 2 exhibited the most potent antitrypanosomal activity in vitro with IC50 value of 4.91 μM.
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Affiliation(s)
- Christine C. Waleguele
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812 Yaoundé, Cameroon; (C.C.W.); (B.M.M.); (A.S.N.); (E.T.)
| | - Brice M. Mba’ning
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812 Yaoundé, Cameroon; (C.C.W.); (B.M.M.); (A.S.N.); (E.T.)
| | - Angelbert F. Awantu
- Department of Chemistry, Faculty of Science, The University of Bamenda, P.O. Box 39 Bambili, Cameroon; (A.F.A.); (J.J.K.B.)
| | - Jean J. K. Bankeu
- Department of Chemistry, Faculty of Science, The University of Bamenda, P.O. Box 39 Bambili, Cameroon; (A.F.A.); (J.J.K.B.)
| | - Yannick S. F. Fongang
- Department of Chemistry, Higher Teacher Training College, The University of Maroua, P.O. Box 55 Maroua, Cameroon
- Correspondence: (Y.S.F.F.); (B.N.L.); Tel.: +237-696-132-833(Y.S.F.F.); +237-675-097-561 (B.N.L.)
| | - Augustin S. Ngouela
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812 Yaoundé, Cameroon; (C.C.W.); (B.M.M.); (A.S.N.); (E.T.)
| | - Etienne Tsamo
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812 Yaoundé, Cameroon; (C.C.W.); (B.M.M.); (A.S.N.); (E.T.)
| | - Norbert Sewald
- Department of Chemistry, Bielefeld University, P.O. Box 100131, 33501 Bielefeld, Germany;
| | - Bruno N. Lenta
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, P.O. Box 47 Yaoundé, Cameroon
- Correspondence: (Y.S.F.F.); (B.N.L.); Tel.: +237-696-132-833(Y.S.F.F.); +237-675-097-561 (B.N.L.)
| | - Rui W. M. Krause
- Department of Chemistry, Rhodes University, P.O. Box 94, Grahamstown 6140, South Africa;
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Chemical Constituents From Endiandra kingiana (Lauraceae) as Potential Inhibitors for Dengue Type 2 NS2B/NS3 Serine Protease and its Molecular Docking. Nat Prod Commun 2019. [DOI: 10.1177/1934578x19861014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A phytochemical study on the bark of Endiandra kingiana Gamble (Lauraceae) led to the isolation of a new benzofuranone, 4-hydroxy-6-(9,13,17-trimethyldodeca-8,12,16-trienyl)-2(3 H)-benzofuranone (1), together with 6 known compounds. Their structures were established on the basis of detailed spectroscopic analysis, including one- and two-dimensional nuclear magnetic resonance (NMR) and electrospray Ionisation mass spectrometry techniques. Compounds 1-3 showed moderate inhibition against dengue virus type 2 NS2B/NS3 protease with percentage inhibitions of 61.23 ± 6.96, 69.92 ± 3.34, and 62.02 ± 6.19, respectively. Molecular docking was performed to predict the binding mode of all protease inhibitor models and the results revealed that most of the essential amino acid residues such as Asp129, Ser135, Tyr161, Asn152, and His51 significantly interact with the ligands.
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Birringer M, Siems K, Maxones A, Frank J, Lorkowski S. Natural 6-hydroxy-chromanols and -chromenols: structural diversity, biosynthetic pathways and health implications. RSC Adv 2018; 8:4803-4841. [PMID: 35539527 PMCID: PMC9078042 DOI: 10.1039/c7ra11819h] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 01/18/2018] [Indexed: 01/26/2023] Open
Abstract
We present the first comprehensive and systematic review on the structurally diverse toco-chromanols and -chromenols found in photosynthetic organisms, including marine organisms, and as metabolic intermediates in animals. The focus of this work is on the structural diversity of chromanols and chromenols that result from various side chain modifications. We describe more than 230 structures that derive from a 6-hydroxy-chromanol- and 6-hydroxy-chromenol core, respectively, and comprise di-, sesqui-, mono- and hemiterpenes. We assort the compounds into a structure-activity relationship with special emphasis on anti-inflammatory and anti-carcinogenic activities of the congeners. This review covers the literature published from 1970 to 2017.
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Affiliation(s)
- Marc Birringer
- Department of Nutritional, Food and Consumer Sciences, Fulda University of Applied Sciences Leipziger Straße 123 36037 Fulda Germany
| | - Karsten Siems
- AnalytiCon Discovery GmbH Hermannswerder Haus 17 14473 Potsdam Germany
| | - Alexander Maxones
- Department of Nutritional, Food and Consumer Sciences, Fulda University of Applied Sciences Leipziger Straße 123 36037 Fulda Germany
| | - Jan Frank
- Institute of Biological Chemistry and Nutrition, University of Hohenheim Garbenstr. 28 70599 Stuttgart Germany
| | - Stefan Lorkowski
- Institute of Nutrition, Friedrich Schiller University Jena Dornburger Str. 25 07743 Jena Germany
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD), Halle-Jena-Leipzig Germany
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Salleh WMNHW, Ahmad F, Yen KH, Zulkifli RM. Anticholinesterase and Anti-inflammatory Constituents fromBeilschmiedia pulverulentaKosterm. ACTA ACUST UNITED AC 2016. [DOI: 10.20307/nps.2016.22.4.225] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Farediah Ahmad
- Department of Chemistry, Faculty of Science, University, Teknologi Malaysia (UTM), 81310 Skudai, Johor, Malaysia
| | - Khong Heng Yen
- School of Chemistry and Environment Studies, Faculty of Applied Sciences, University Teknologi MARA (UiTM) Sarawak Jalan Meranek, 94300 Kota Samarahan, Sarawak, Malaysia
| | - Razauden Mohamed Zulkifli
- Department of Bioscience and Health Sciences, Faculty of Biosciences and Medical Engineering, University Teknologi Malaysia (UTM), 81310 Skudai, Johor, Malaysia
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Ndjakou Lenta B, Chouna JR, Nkeng-Efouet PA, Sewald N. Endiandric Acid Derivatives and Other Constituents of Plants from the Genera Beilschmiedia and Endiandra (Lauraceae). Biomolecules 2015; 5:910-42. [PMID: 26117852 PMCID: PMC4496702 DOI: 10.3390/biom5020910] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Plants of the Lauraceae family are widely used in traditional medicine and are sources of various classes of secondary metabolites. Two genera of this family, Beilschmiedia and Endiandra, have been the subject of numerous investigations over the past decades because of their application in traditional medicine. They are the only source of bioactive endiandric acid derivatives. Noteworthy is that their biosynthesis contains two consecutive non-enzymatic electrocyclic reactions. Several interesting biological activities for this specific class of secondary metabolites and other constituents of the two genera have been reported, including antimicrobial, enzymes inhibitory and cytotoxic properties. This review compiles information on the structures of the compounds described between January 1960 and March 2015, their biological activities and information on endiandric acid biosynthesis, with 104 references being cited.
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Affiliation(s)
- Bruno Ndjakou Lenta
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé 1, P.O. Box 47, Yaoundé, Cameroon
- Organic and Bioorganic Chemistry, Chemistry Department, Bielefeld University, P.O. Box 100131, 33501 Bielefeld, Germany; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +2376-7509-7561
| | - Jean Rodolphe Chouna
- Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon; E-Mails: (J.R.C.); (P.A.N.-E.)
| | - Pepin Alango Nkeng-Efouet
- Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon; E-Mails: (J.R.C.); (P.A.N.-E.)
| | - Norbert Sewald
- Organic and Bioorganic Chemistry, Chemistry Department, Bielefeld University, P.O. Box 100131, 33501 Bielefeld, Germany; E-Mail:
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Chen JJ, Kuo WL, Sung PJ, Chen IS, Cheng MJ, Lim YP, Liao HR, Chang TH, Wei DC, Chen JY. Beilschamide, a New Amide, and Cytotoxic Constituents of Beilschmiedia erythrophloia. Chem Nat Compd 2015. [DOI: 10.1007/s10600-015-1265-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Apel C, Gény C, Dumontet V, Birlirakis N, Roussi F, Pham VC, Doan Thi Mai H, Nguyen VH, Chau VM, Litaudon M. Endiandric acid analogues from Beilschmiedia ferruginea as dual inhibitors of Bcl-xL/Bak and Mcl-1/Bid interactions. JOURNAL OF NATURAL PRODUCTS 2014; 77:1430-1437. [PMID: 24901800 DOI: 10.1021/np500170v] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A rapid screening by (1)H and (1)H-(13)C HSQC NMR spectroscopy of EtOAc extracts of Endiandra and Beilschmiedia species allowed the selection of Beilschmiedia ferruginea leaves and flowers extract for a chemical investigation, leading to the isolation of 11 new tetracyclic endiandric acid analogues, named ferrugineic acids A-K (1-11). Their structures were determined by 1D and 2D NMR spectroscopic analysis in combination with HRMS data. These compounds were assayed for Bcl-xL and Mcl-1 binding affinities. Ferrugineic acids B, C, and J (2, 3, and 10) exhibited significant binding affinity for both antiapoptotic proteins Bcl-xL (Ki = 19.2, 12.6, and 19.4 μM, respectively) and Mcl-1 (Ki = 14.0, 13.0, and 5.2 μM, respectively), and ferrugineic acid D (4) showed only significant inhibiting activity for Mcl-1 (Ki = 5.9 μM).
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Affiliation(s)
- Cécile Apel
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles (ICSN), CNRS , 1 av de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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Zhao CG, Yao MJ, Yang JW, Chai YL, Sun XD, Yuan CS. A new benzopyran derivative from Pseuduvaria indochinensis Merr. Nat Prod Res 2013; 28:169-73. [DOI: 10.1080/14786419.2013.863197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Cai-Gui Zhao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Ming-Jun Yao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Jin-Wei Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Ya-Lin Chai
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xiao-Dong Sun
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Cheng-Shan Yuan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
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Talontsi FM, Lamshöft M, Bauer JO, Razakarivony AA, Andriamihaja B, Strohmann C, Spiteller M. Antibacterial and antiplasmodial constituents of Beilschmiedia cryptocaryoides. JOURNAL OF NATURAL PRODUCTS 2013; 76:97-102. [PMID: 23320609 DOI: 10.1021/np300773x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Four new beilschmiedic acid derivatives, cryptobeilic acids A-D (1-4), and tsangibeilin B (5) have been isolated from the bark of Beilschmiedia cryptocaryoides collected from Madagascar. Their structures were elucidated using detailed spectroscopic and spectrometric methods. Cryptobeilic acid A (1) and tsangibeilin B (5) structures were confirmed by single-crystal X-ray diffraction analysis. Compounds 1-5 displayed moderate antibacterial activity against Escherichia coli 6r3, Acinetobacter calcoaceticus DSM 586, and Pseudonamas stutzeri A1501, with the minimum inhibitory concentrations ranging from 10 to 50 μM, respectively. In addition, the compounds exhibited antiplasmodial activity against erythrocytic stages of chloroquine-resistant Plasmodium falciparum strain NF54 and weak cytotoxicity against L6 cell lines.
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Affiliation(s)
- Ferdinand Mouafo Talontsi
- Institute of Environmental Research (INFU) of the Faculty of Chemistry, Chair of Environmental Chemistry and Analytical Chemistry, TU Dortmund, Otto-Hahn-Strasse 6, D-44221 Dortmund, Germany
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11
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Huang YT, Chang HS, Wang GJ, Lin CH, Chen IS. Secondary metabolites from the roots of Beilschmiedia tsangii and their anti-inflammatory activities. Int J Mol Sci 2012. [PMID: 23208379 PMCID: PMC3546699 DOI: 10.3390/ijms131216430] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Four new endiandric acid analogues, tsangibeilin C (1), tsangibeilin D (2), tricyclotsangibeilin (3) and endiandric acid M (4), one new lignan, beilschminol B (5) and two new sesquiterpenes, (+)-5-hydroxybarbatenal (6) and (4R,5R)-4,5-dihydroxycaryophyll-8(13)-ene (7), together with four known compounds (8-11), were isolated from the roots of Beilschmiedia tsangii (Lauraceae). The structures of 1-7 were determined by spectroscopic techniques. Among the isolates, endiandric acid M (4) exhibited moderate iNOS inhibitory activity, with an IC(50) value of 31.70 μM.
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Affiliation(s)
- Yun-Ting Huang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; E-Mails: (Y.-T.H.); (H.-S.C.)
| | - Hsun-Shuo Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; E-Mails: (Y.-T.H.); (H.-S.C.)
| | - Guei-Jane Wang
- L5 Research Center, China Medical University Hospital, Taichung 40447, Taiwan; E-Mail:
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung 40402, Taiwan
| | - Chu-Hung Lin
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; E-Mail:
| | - Ih-Sheng Chen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; E-Mails: (Y.-T.H.); (H.-S.C.)
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +886-7-312-1101 (ext. 2191); Fax: +886-7-321-0683
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Williams RB, Martin SM, Hu JF, Norman VL, Goering MG, Loss S, O'Neil-Johnson M, Eldridge GR, Starks CM. Cytotoxic and antibacterial beilschmiedic acids from a Gabonese species of Beilschmiedia. JOURNAL OF NATURAL PRODUCTS 2012; 75:1319-1325. [PMID: 22758788 PMCID: PMC3424616 DOI: 10.1021/np300241d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
High-throughput natural products chemistry methods have facilitated the isolation of eight new (1-8) and two known (9 and 10) beilschmiedic acid derivatives from the leaves of a Gabonese species of Beilschmiedia. Compounds 3-10 were isolated in microgram quantities, and the NMR data for structure elucidation and dereplication were acquired utilizing a Bruker BioSpin TCI 1.7 mm MicroCryoProbe. All of the compounds were screened for cytotoxic and antibacterial activity against NCI-H460 human lung cancer cells and a clinical isolate of methicillin-resistant Staphylococcus aureus, respectively. This is the first report of cytotoxic activity for the endiandric/beilschmiedic acid class of compounds.
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Affiliation(s)
- Russell B Williams
- Lead Discovery and Rapid Structure Elucidation Group, Sequoia Sciences, Inc. , 1912 Innerbelt Business Center Drive, St. Louis, Missouri 63114, USA.
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Anagnostaki EE, Zografos AL. “Common synthetic scaffolds” in the synthesis of structurally diverse natural products. Chem Soc Rev 2012; 41:5613-25. [DOI: 10.1039/c2cs35080g] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Mollataghi A, Coudiere E, Hadi AHA, Mukhtar MR, Awang K, Litaudon M, Ata A. Anti-acetylcholinesterase, anti-α-glucosidase, anti-leishmanial and anti-fungal activities of chemical constituents of Beilschmiedia species. Fitoterapia 2011; 83:298-302. [PMID: 22119096 DOI: 10.1016/j.fitote.2011.11.009] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 11/04/2011] [Accepted: 11/07/2011] [Indexed: 11/18/2022]
Abstract
Phytochemical investigation of Beilschmiedia alloiophylla has resulted in the isolation of one new alkaloid, 2-hydroxy-9-methoxyaporphine (1), and ten known natural products, laurotetanine (2), liriodenine (3), boldine (4), secoboldine (5), isoboldine (6), asimilobine (7), oreobeiline (8), 6-epioreobeiline (9), β-amyrone (10), and (S)-3-methoxynordomesticine (11). Chemical studies on the bark of B. kunstleri afforded compounds 2 and 4 along with one bisbenzylisoquinoline alkaloid, N-dimethylphyllocryptine (12). Structures of compounds 1-12 were elucidated on the basis of spectroscopic methods. All of these isolates were evaluated for their anti-acetylcholinesterase (AChE), anti-α-glucosidase, anti-leishmanial and anti-fungal activities. Compounds 1-12 exhibited strong to moderate bioactivities in aforementioned bioassays.
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Affiliation(s)
- Abbas Mollataghi
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
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Lenta BN, Chouna JR, Nkeng-Efouet PA, Kimbu SF, Tsamo E, Sewald N. Obscurine: A New Cyclostachine Acid Derivative from Beilschmiedia obscura. Nat Prod Commun 2011. [DOI: 10.1177/1934578x1100601108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
From the methylene chloride extract of the stem bark of Beilschmiedia obscura, a new cyclostachine derivative, obscurine (1), has been isolated, together with six known compounds. The structure of compound 1 was established by spectroscopic methods, including 1- and 2-dimensional NMR techniques.
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Affiliation(s)
- Bruno Ndjakou Lenta
- Department of Chemistry, Higher Teachers’ Training College, University of Yaoundé 1, P.O. Box 47, Yaoundé, Cameroon
| | - Jean Rodolphe Chouna
- Department of Organic Chemistry, University of Yaounde 1, P.O. Box 812, Yaoundé, Cameroon
| | | | - Samuel Fon Kimbu
- Department of Organic Chemistry, University of Yaounde 1, P.O. Box 812, Yaoundé, Cameroon
| | - Etienne Tsamo
- Department of Organic Chemistry, University of Yaounde 1, P.O. Box 812, Yaoundé, Cameroon
| | - Norbert Sewald
- Chemistry Department, Organic and Bioorganic Chemistry, Bielefeld University, P.O. Box 100131, 33501 Bielefeld, Germany
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Huang YT, Chang HS, Wang GJ, Cheng MJ, Chen CH, Yang YJ, Chen IS. Anti-inflammatory endiandric acid analogues from the roots of Beilschmiedia tsangii. JOURNAL OF NATURAL PRODUCTS 2011; 74:1875-1880. [PMID: 21846089 DOI: 10.1021/np200279r] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Bioassay-guided fractionation of roots of Beilschmiedia tsangii led to the isolation of six new endiandric acid analogues: tsangibeilin A (1), tsangibeilin B (2), endiandramide A (3), endiandric acid K (4), endiandric acid L (5), and endiandramide B (6). Also isolated were two new lignans, beilschminol A (7) and tsangin C (8), and six known compounds. The structures of 1-8 were determined by spectroscopic techniques. Compounds 3 and 6 exhibited potent iNOS inhibitory activity, with IC(50) values of 9.59 and 16.40 μM, respectively.
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Affiliation(s)
- Yun-Ting Huang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan 807, Republic of China
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Leverrier A, Awang K, Guéritte F, Litaudon M. Pentacyclic polyketides from Endiandra kingiana as inhibitors of the Bcl-xL/Bak interaction. PHYTOCHEMISTRY 2011; 72:1443-1452. [PMID: 21550092 DOI: 10.1016/j.phytochem.2011.04.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 04/07/2011] [Accepted: 04/08/2011] [Indexed: 05/30/2023]
Abstract
An in vitro biological screening of Malaysian plants allowed the selection of several species with a significant binding affinity for the antiapoptotic protein Bcl-xL. The chemical investigation of Endiandra kingiana led to the isolation of a series of polyketides named kingianins A-N, having a pentacyclic carbon skeleton described for the first time in nature. Fourteen compounds were isolated as racemic mixtures, and characterized by mass spectrometryand extensive one- and two-dimensional NMR spectroscopy. The (-) and (+) enantiomers of kingianins A and G-L were separated using chiral HPLC, and the absolute configuration of four of them was clearly established by CD analysis. The levorotatory enantiomers showed the more potent binding affinity for Bcl-xL with Ki ranging from 1.0 to 12μM.
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Affiliation(s)
- Aurélie Leverrier
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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Chouna JR, Alango Nkeng-Efouet P, Ndjakou Lenta B, Duplex Wansi J, Neumann B, Stammler HG, Fon Kimbu S, Sewald N. Beilschmiedic Acids F and G, Further Endiandric Acid Derivatives from Beilschmiedia anacardioides. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201000388] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Chaverri C, Cicció JF. Essential Oils FromBeilschmiedia pendula(Sw.) Hemsl. (Lauraceae) From Costa Rica. JOURNAL OF ESSENTIAL OIL RESEARCH 2010. [DOI: 10.1080/10412905.2010.9700320] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Lenta BN, Tantangmo F, Devkota KP, Wansi JD, Chouna JR, Soh RCF, Neumann B, Stammler HG, Tsamo E, Sewald N. Bioactive constituents of the stem bark of Beilschmiedia zenkeri. JOURNAL OF NATURAL PRODUCTS 2009; 72:2130-2134. [PMID: 19904919 DOI: 10.1021/np900341f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Phytochemical investigation of the stem bark of Beilschmiedia zenkeri led to the isolation of four new methoxylated flavonoid derivatives, (2S,4R)-5,6,7-trimethoxyflavan-4-ol (1), (2S,4R)-4,5,6,7-tetramethoxyflavan (2), beilschmieflavonoid A (3), and beilschmieflavonoid B (4), together with seven known compounds. The structures of 1-4 were established by spectroscopic methods, and their relative configurations confirmed by X-ray crystallographic and CD analysis. The isolated compounds were evaluated in vitro for their antibacterial activity against three strains of bacteria, Pseudomonas agarici, Bacillus subtilis, and Streptococcus minor, and for their antiplasmodial activity against Plasmodium falciparum, chloroquine-resistant strain W2.
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Affiliation(s)
- Bruno Ndjakou Lenta
- Department of Chemistry, Higher Teachers' Training College, University of Yaoundé 1, P.O. Box 47, Yaoundé, Cameroon
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Yang PS, Cheng MJ, Peng CF, Chen JJ, Chen IS. Endiandric Acid Analogues from the Roots of Beilschmiedia erythrophloia. JOURNAL OF NATURAL PRODUCTS 2009; 72:53-58. [PMID: 19072217 DOI: 10.1021/np800504w] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Investigation of the roots of Beilschmiedia erythrophloia has led to the isolation of seven new endiandric acid analogues, erythrophloins A-F (1-6) and beilcyclone A (7), together with 11 known compounds. The structures of 1-7 were determined using spectroscopic techniques. Two constituents, erythrophloin C (3) and suberosol B (8), exhibited antitubercular activity against Mycobacterium tuberculosis H37Rv, showing MIC values of 50 and 28.9 microg/mL, respectively.
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Affiliation(s)
- Ping-Shin Yang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan 807, Republic of China
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Yang PS, Cheng MJ, Chen JJ, Chen IS. Two New Endiandric Acid Analogs, a New Benzopyran, and a New Benzenoid from the Root ofBeilschmiedia erythrophloia. Helv Chim Acta 2008. [DOI: 10.1002/hlca.200890229] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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