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Tantapakul C, Maneerat W, Sripisut T, Ritthiwigrom T, Andersen RJ, Cheng P, Cheenpracha S, Raksat A, Laphookhieo S. New Benzophenones and Xanthones from Cratoxylum sumatranum ssp. neriifolium and Their Antibacterial and Antioxidant Activities. J Agric Food Chem 2016; 64:8755-8762. [PMID: 27788582 DOI: 10.1021/acs.jafc.6b03643] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two new benzophenones (1 and 2) and four new xanthones (4-6 and 17) together with 24 known compounds (3, 7-16, and 18-30) were isolated from the roots and twigs of Cratoxylum sumatranum ssp. neriifolium. Their structures were elucidated by spectroscopic methods. Compounds 5 and 26 showed antibacterial activity against Micrococcus luteus, Bacillus cereus, and Staphylococcus epidermis with minimum inhibitory concentrations ranging from 4 to 8 μg/mL, whereas compounds 7, 20, and 26 displayed selective antibacterial activities against Staphylococcus aureus (8 μg/mL), Salmonella typhimurium (4 μg/mL), and Pseudomonas aeruginosa (4 μg/mL), respectively. The radical scavenging effects of some isolated compounds were investigated. Compounds 11 and 21 exhibited potent activity against 2,2-diphenyl-1-picrylhydrazyl (DPPH) with IC50 values of 7.0 ± 1.0 and 6.0 ± 0.2 μM, respectively.
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Affiliation(s)
- Cholpisut Tantapakul
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University , Tasud, Muang, Chiang Rai 57100, Thailand
| | - Wisanu Maneerat
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University , Tasud, Muang, Chiang Rai 57100, Thailand
| | - Tawanun Sripisut
- School of Cosmetic Science, Mae Fah Luang University , Tasud, Muang, Chiang Rai 57100, Thailand
| | - Thunwadee Ritthiwigrom
- Department of Chemistry, Faculty of Science, Chiang Mai University , Sutep, Muang, Chiang Mai 50200, Thailand
| | - Raymond J Andersen
- Departments of Chemistry and Earth, Ocean & Atmospheric Sciences, University of British Columbia , 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1
| | - Ping Cheng
- Departments of Chemistry and Earth, Ocean & Atmospheric Sciences, University of British Columbia , 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1
| | - Sarot Cheenpracha
- School of Science, University of Phayao , Maeka, Muang, Phayao 56000, Thailand
| | - Achara Raksat
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University , Tasud, Muang, Chiang Rai 57100, Thailand
| | - Surat Laphookhieo
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University , Tasud, Muang, Chiang Rai 57100, Thailand
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2
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Auranwiwat C, Laphookhieo S, Rattanajak R, Kamchonwongpaisan S, Pyne SG, Ritthiwigrom T. Antimalarial polyoxygenated and prenylated xanthones from the leaves and branches of Garcinia mckeaniana. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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3
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Promchai T, Jaidee A, Cheenpracha S, Trisuwan K, Rattanajak R, Kamchonwongpaisan S, Laphookhieo S, Pyne SG, Ritthiwigrom T. Antimalarial Oxoprotoberberine Alkaloids from the Leaves of Miliusa cuneata. J Nat Prod 2016; 79:978-983. [PMID: 26928423 DOI: 10.1021/acs.jnatprod.5b01054] [Citation(s) in RCA: 9] [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: 06/05/2023]
Abstract
Five new oxoprotoberberine alkaloids, miliusacunines A-E (1-5), along with nine known compounds, 6-14, were isolated from an acetone extract of the leaves and twigs of Miliusa cuneata. Their structures were elucidated by spectroscopic analysis. All isolated compounds were evaluated for their cytotoxicities against the KB and Vero cell lines and for antimalarial activities against the Plasmodium falciparum strains TM4 and K1 (a sensitive and a multi-drug-resistant strain, respectively). Compound 1 showed in vitro antimalarial activity against the TM4 strain, with an IC50 value of 19.3 ± 3.4 μM, and compound 2 demonstrated significant activity against the K1 strain, with an IC50 value of 10.8 ± 4.1 μM. Both compounds showed no discernible cytotoxicity to the Vero cell line at the concentration levels evaluated.
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Affiliation(s)
- Thanika Promchai
- Department of Chemistry, Faculty of Science, Chiang Mai University , Sutep, Muang, Chiang Mai 50200, Thailand
| | - Atchara Jaidee
- Department of Chemistry, Faculty of Science, Chiang Mai University , Sutep, Muang, Chiang Mai 50200, Thailand
| | - Sarot Cheenpracha
- School of Science, University of Phayao , Maeka, Muang, Phayao 56000, Thailand
| | - Kongkiat Trisuwan
- Department of Chemistry, Faculty of Science, Chiang Mai University , Sutep, Muang, Chiang Mai 50200, Thailand
| | - Roonglawan Rattanajak
- Medical Molecular Biology Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency , Thailand Science Park, Pathumthani 12120, Thailand
| | - Sumalee Kamchonwongpaisan
- Medical Molecular Biology Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency , Thailand Science Park, Pathumthani 12120, Thailand
| | - Surat Laphookhieo
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University , Tasud, Muang, Chiang Rai 57100, Thailand
| | - Stephen G Pyne
- School of Chemistry, University of Wollongong , Wollongong, New South Wales 2522, Australia
| | - Thunwadee Ritthiwigrom
- Department of Chemistry, Faculty of Science, Chiang Mai University , Sutep, Muang, Chiang Mai 50200, Thailand
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Cheenpracha S, Jitonnom J, Komek M, Ritthiwigrom T, Laphookhieo S. Acetylcholinesterase inhibitory activity and molecular docking study of steroidal alkaloids from Holarrhena pubescens barks. Steroids 2016; 108:92-8. [PMID: 26850468 DOI: 10.1016/j.steroids.2016.01.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 01/28/2016] [Accepted: 01/31/2016] [Indexed: 11/23/2022]
Abstract
An alkaloidal extract of the bark of Holarrhena pubescens showed several inhibition zones of acetylcholinesterase (AChE) inhibitor, using a bioautographic assay. Activity-guided fractionation afforded three new steroidal alkaloids, mokluangins A-C (1-3), together with three known compounds, antidysentericine (4), holaphyllamine (5), methylholaphyllamine (6). All structures were elucidated by analysis of NMR and MS spectroscopic data. Compound 2 showed moderate antibacterial activity against Bacillus subtilis and Escherichia coli with the MIC value of 16 μg/mL, while compound 3 exhibited moderate selective activity against E. coli with the MIC value of 16 μg/mL. In addition, compounds 1-4 also showed strong AChE inhibiting activity with IC50 values ranging from 1.44 to 23.22 μM. Molecular docking calculations were also performed and the results demonstrated that all compounds can bind at the aromatic gorge of AChE with estimated binding free energies correlated well with the in vitro inhibitory profiles. Hydrophobic and hydrogen bonding interactions contribute mainly to the binding of the alkaloids where the substituents at C-3 serving as key functional groups for the AChE inhibition. Our results will allow the development of new AChE-inhibitors based on steroidal alkaloid skeleton bearing the cyclic amide moiety.
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Affiliation(s)
- Sarot Cheenpracha
- Division of Chemistry, School of Science, University of Phayao, Maeka, Muang, Phayao 56000, Thailand.
| | - Jitrayut Jitonnom
- Division of Chemistry, School of Science, University of Phayao, Maeka, Muang, Phayao 56000, Thailand
| | - Manutchaya Komek
- Division of Chemistry, School of Science, University of Phayao, Maeka, Muang, Phayao 56000, Thailand
| | - Thunwadee Ritthiwigrom
- Department of Chemistry, Faculty of Science, Chiang Mai University, Sutep, Muang, Chiang Mai 50200, Thailand
| | - Surat Laphookhieo
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Muang, Chiang Rai 57100, Thailand
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Meesakul P, Pansanit A, Maneerat W, Sripisut T, Ritthiwigrom T, Machan T, Cheenpracha S, Laphookhieo S. Xanthones from Garcinia Propinqua Roots. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100126] [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: 11/17/2022] Open
Abstract
Phytochemical investigation of Garcinia propinqua roots led to the isolation and identification of a new xanthone, doitunggarcinone D (1), together with 15 known compounds (2–16). Their structures were elucidated by intensive analysis of spectroscopic data. Compounds 3, 6, 7, 14, 15 and 16 exhibited strong antibacterial activity against Bacillus subtilis TISTR 088 with MIC values in the range of 1–4 μg/mL. Compounds 3, 7, 10 and 14 also showed good antibacterial activity against B. cereus TISTR 688 with MIC values ranging from 4–8 μg/mL.
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Affiliation(s)
- Pornphimol Meesakul
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Acharavadee Pansanit
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Wisanu Maneerat
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Tawanun Sripisut
- School of Cosmetic Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Thunwadee Ritthiwigrom
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Theeraphan Machan
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | | | - Surat Laphookhieo
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
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6
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Meesakul P, Ritthiwigrom T, Cheenpracha S, Sripisut T, Maneerat W, Machan T, Laphookhieo S. A New Cytotoxic Clerodane Diterpene from Casearia Graveolens Twigs. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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
The first phytochemical investigation of Casearia graveolens twigs led to the isolation and identification of a new clerodane diterpene, caseariagraveolin (1), together with six known compounds (2–7). Their structures were elucidated by intensive analysis of their spectroscopic data. Compound 1 showed strong cytotoxicity against oral cavity and breast cancer cell lines with IC50 values of 2.48 and 6.63 μM, respectively.
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Affiliation(s)
- Pornphimol Meesakul
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Thunwadee Ritthiwigrom
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | | | - Tawanun Sripisut
- School of Cosmetic Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Wisanu Maneerat
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Theeraphan Machan
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Surat Laphookhieo
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
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7
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Meesakul P, Ritthiwigrom T, Cheenpracha S, Sripisut T, Maneerat W, Machan T, Laphookhieo S. A New Cytotoxic Clerodane Diterpene from Casearia graveolens Twigs. Nat Prod Commun 2016; 11:13-15. [PMID: 26996007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
The first phytochemical investigation of Casearia graveolens twigs led to the isolation and identification of a new clerodane diterpene, caseariagraveolin (1), together with six known compounds (2-7). Their structures were elucidated by intensive analysis of their spectroscopic data. Compound 1 showed strong cytotoxicity against oral cavity and breast cancer cell lines with IC₅₀ values of 2.48 and 6.63 µM, respectively.
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8
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Meesakul P, Pansanit A, Maneerat W, Sripisut T, Ritthiwigrom T, Machana T, Cheenpracha S, Laphookhieo S. Xanthones from Garcinia propinqua Roots. Nat Prod Commun 2016; 11:87-90. [PMID: 26996028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
Phytochemical investigation of Garcinia propinqua roots led to the isolation and identification of a new xanthone, doitunggarcinone D (1), together with 15 known compounds (2-16). Their structures were elucidated by intensive analysis of spectroscopic data. Compounds 3, 6, 7, 14, 15 and 16 exhibited strong antibacterial activity against Bacillus subtilis TISTR 088 with MIC values in the range of 1-4 µg/mL. Compounds 3, 7, 10 and 14 also showed good antibacterial activity against B. cereus TISTR 688 with MIC values ranging from 4-8 µg/mL.
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9
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Jaidee A, Promchai T, Trisuwan K, Laphookhieo S, Rattanajak R, Kamchonwongpaisan S, Pyne SG, Ritthiwigrom T. Cytotoxic and Antimalarial Alkaloids from the Twigs of Dasymaschalon obtusipetalum. Nat Prod Commun 2015; 10:1175-1177. [PMID: 26411003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
One new p-quinonoid aporphine alkaloid, obtusipetadione (1), and eleven known compounds (2-12) were isolated from the acetone extract of the twigs of Dasymaschalon obtusipetalum. Their structures were elucidated by spectroscopic methods. The cytotoxic and antimalarial activities of the isolated compounds were evaluated. Compound 1 showed significant in vitro antiplasmodial activity against the P. falciparum strains TM4 and K1 (multidrug resistant strain) with IC50 values of 2.46 ± 0.12 and 1.38 ± 0.99 μg/mL, respectively with no cytotoxicity. Compound 9 had more modest antiplasmodial activity, but significant cytotoxicity.
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10
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Jaidee A, Promchai T, Trisuwan K, Laphookhieo S, Rattanajak R, Kamchonwongpaisan S, Pyne SG, Ritthiwigrom T. Cytotoxic and Antimalarial Alkaloids from the Twigs of Dasymaschalon obtusipetalum. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000709] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
One new p-quinonoid aporphine alkaloid, obtusipetadione (1), and eleven known compounds (2–12) were isolated from the acetone extract of the twigs of Dasymaschalon obtusipetalum. Their structures were elucidated by spectroscopic methods. The cytotoxic and antimalarial activities of the isolated compounds were evaluated. Compound 1 showed significant in vitro antiplasmodial activity against the P. falciparum strains TM4 and K1 (multidrug resistant strain) with IC50 values of 2.46±0.12 and 1.38±0.99 μg/mL, respectively with no cytotoxicity. Compound 9 had more modest antiplasmodial activity, but significant cytotoxicity.
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Affiliation(s)
- Atchara Jaidee
- Department of Chemistry, Faculty of Science, Chiang Mai University, Sutep, Muang, Chiang Mai 50200, Thailand
| | - Thanika Promchai
- Department of Chemistry, Faculty of Science, Chiang Mai University, Sutep, Muang, Chiang Mai 50200, Thailand
| | - Kongkiat Trisuwan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Sutep, Muang, Chiang Mai 50200, Thailand
| | - Surat Laphookhieo
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Muang, Chiang Rai 57100, Thailand
| | - Roonglawan Rattanajak
- Medical Molecular Biology Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Thailand Science Park, Pathumthani 12120, Thailand
| | - Sumalee Kamchonwongpaisan
- Medical Molecular Biology Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Thailand Science Park, Pathumthani 12120, Thailand
| | - Stephen G. Pyne
- School of Chemistry, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Thunwadee Ritthiwigrom
- Department of Chemistry, Faculty of Science, Chiang Mai University, Sutep, Muang, Chiang Mai 50200, Thailand
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Sriyatep T, Siridechakorn I, Maneerat W, Pansanit A, Ritthiwigrom T, Andersen RJ, Laphookhieo S. Bioactive prenylated xanthones from the young fruits and flowers of Garcinia cowa. J Nat Prod 2015; 78:265-271. [PMID: 25651042 DOI: 10.1021/np5008476] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Five new xanthones, garciniacowones A-E (1-5), together with 14 known xanthones, 6-19, were isolated from the young fruits and fresh flowers of Garcinia cowa. The structures of 1-5 were elucidated by analysis of their 1D and 2D NMR spectra and mass spectrometric data. The compounds 1-19 were tested in vitro for their antimicrobial activity and for their ability to inhibit α-glucosidase. Compounds 16 and 17 showed the most potent α-glucosidase inhibitory activity, with IC50 values of 7.8 ± 0.5 and 8.7 ± 0.3 μM, respectively. Compounds 8, 9, and 19 showed antibacterial activity against Bacillus subtilis TISTR 088 with identical MIC values of 2 μg/mL, while 8, 10, and 19 exhibited antibacterial activity against Bacillus cereus TISTR 688 with identical MIC values of 4 μg/mL.
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Affiliation(s)
- Teerayut Sriyatep
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University , Tasud, Muang, Chiang Rai 57100, Thailand
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Tantapakul C, Sripisut T, Maneerat W, Ritthiwigrom T, Laphookhieo S. Antibacterial compounds from Glycosmis puberula twigs. Nat Prod Commun 2014; 9:1705-1707. [PMID: 25632463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
The first phytochemical investigation of Glycosmis puberula twigs led to the isolation and identification of a new quinolone alkaloid, glycosmispuberulone (1), along with ten known compounds (2-11). The structures were elucidated by spectroscopic analyses and comparison with previously reported data. Their antibacterial activities against Gram-positive and Gram-negative bacteria were also evaluated.
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Tantapakul C, Maneerat W, Sripisut T, Ritthiwigrom T, Laphookhieo S. Dammarane Terpenoids from the Fruits of Dysoxylum mollissimum. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400901105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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
Two new dammaranes, dysomollisol (1) and dysomollisone (2), along with seven known compounds (3–9) were isolated and identified from the fruits of Dysoxylum mollissimum. The structures of these compounds were determined on the basis of spectroscopic analyses, including 1D and 2D NMR, UV, IR and mass spectrometry. The antibacterial activity and cytotoxicity against epidermoid carcinoma of oral cavity (KB) cell line of compounds 1–9 were evaluated.
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Affiliation(s)
- Cholpisut Tantapakul
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Muang, Chiang Rai 57100, Thailand
| | - Wisanu Maneerat
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Muang, Chiang Rai 57100, Thailand
| | - Tawanun Sripisut
- Natural Products Research Laboratory, School of Cosmetic Science, Mae Fah Luang University, Tasud, Muang, Chiang Rai 57100, Thailand
| | - Thunwadee Ritthiwigrom
- Department of Chemistry, Faculty of Science, Chiang Mai University, Sutep, Muang, Chiang Mai 50200, Thailand
| | - Surat Laphookhieo
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Muang, Chiang Rai 57100, Thailand
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Tantapakul C, Maneerat W, Sripisut T, Ritthiwigrom T. Dammarane terpenoids from the fruits of Dysoxylum mollissimum. Nat Prod Commun 2014; 9:1553-6. [PMID: 25532278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
Two new dammaranes, dysomollisol (1) and dysomollisone (2), along with seven known compounds (3-9) were isolated and identified from the fruits of Dysoxylum mollissimum. The structures of these compounds were determined on the basis of spectroscopic analyses, including 1D and 2D NMR, UV, IR and mass spectrometry. The antibacterial activity and cytotoxicity against epidermoid carcinoma of oral cavity (KB) cell line of compounds 1-9 were evaluated.
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Raksat A, Laphookhieo S, Cheenpracha S, Ritthiwigrom T, Maneerat W. Antibacterial compounds from the roots of Cratoxylumformosum spp. pruniflorum. Nat Prod Commun 2014; 9:1487-1489. [PMID: 25522542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
Phytochemical investigation of the roots of Cratoxylum formosum spp. pruniflolnnm led to the isolation and identification of a new xanthone, namely cratopruniforone (1), together with 13 known compounds (2-14). Some of these more abundant compounds were evaluated for their antibacterial activities.
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16
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Abstract
The phytochemistry of Kopsia arborea Blume has received considerable attention, which has resulted in the isolation of a number of new unusual indole alkaloids with intriguing structures. In this study, a new eburnane-type alkaloid, phutdonginin (1), together with eight known alkaloids: 19-OH-(-)-eburnamonine (2), melodinine E (3), kopsinine (4), kopsilongine (5), kopsamine (6), (-)-methylenedioxy-11,12-kopsinaline (7), decarbomethoxykopsiline (8), and vincadifformine (9), were isolated from the twigs of K. arborea. Their structures were characterized extensively by 1D and 2D NMR spectroscopy and HR-ESI-MS. All compounds were submitted to TLC screening for acetylcholinesterase inhibitory activities. Only kopsamine and decarbomethoxykopsiline showed AChE inhibition with MIR values of 12.5 and 6.25 μg, respectively, compared with galanthamine (positive control, 0.004 μg). In addition, compounds 1 and 2 inhibited moderate antibacterial activity against E. coli TISTR 780 with the MIC value of 32 μg/mL.
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Affiliation(s)
- Sarot Cheenpracha
- School of Science, University of Phayao, Maeka, Meuang, Phayao 56000, Thailand
| | - Achara Raksat
- School of Science, University of Phayao, Maeka, Meuang, Phayao 56000, Thailand
| | - Thunwadee Ritthiwigrom
- Department of Chemistry, Faculty of Science, Chiang Mai University, Sutep, Meuang, Chiang Mai 50200, Thailand
| | - Surat Laphookhieo
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Meuang, Chiang Rai 57100, Thailand
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17
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Cheenpracha S, Raksat A, Ritthiwigrom T, Laphookhieo S. Monoterpene indole alkaloids from the twigs of Kopsia arborea. Nat Prod Commun 2014; 9:1441-1443. [PMID: 25522533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
The phytochemistry of Kopsia arborea Blume has received considerable attention, which has resulted in the isolation of a number of new unusual indole alkaloids with intriguing structures. In this study, a new eburnane-type alkaloid, phutdonginin (1), together with eight known alkaloids: 19-OH-(-)- eburnamonine (2), melodinine E (3), kopsinine (4), kopsilongine (5), kopsamine (6), (-)-methylenedioxy-1 1,12-kopsinaline (7), decarbomethoxykopsiline (8), and vincadifformine (9), were isolated from the twigs of K. arborea. Their structures were characterized extensively by 1D and 2D NMR spectroscopy and HR-ESI-MS. All compounds were submitted to TLC screening for acetylcholinesterase inhibitory activities. Only kopsamine and decarbomethoxykopsiline showed AChE inhibition with MIR values of 12.5 and 6.25 μg, respectively, compared with galanthamine (positive control, 0.004 μg). In addition, compounds 1 and 2 inhibited moderate antibacterial activity against E. coli TISTR 780 with the MIC value of 32 .g/mL.
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Raksat A, Laphookhieo S, Cheenpracha S, Ritthiwigrom T, Maneerat W. Antibacterial Compounds from the Roots of Cratoxylum formosum spp. pruniflorum. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400901020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Phytochemical investigation of the roots of Cratoxylum formosum spp. pruniflorum led to the isolation and identification of a new xanthone, namely cratopruniforone (1), together with 13 known compounds (2–14). Some of these more abundant compounds were evaluated for their antibacterial activities.
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Affiliation(s)
- Achara Raksat
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Surat Laphookhieo
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | | | - Thunwadee Ritthiwigrom
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Wisanu Maneerat
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
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Cheenpracha S, Ritthiwigrom T, Laphookhieo S. Alstoniaphyllines A-C, unusual nitrogenous derivatives from the bark of Alstonia macrophylla. J Nat Prod 2013; 76:723-726. [PMID: 23806072 DOI: 10.1021/np3006937] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Chemical investigation of an alkaloidal extract of Alstonia macrophylla bark led to the isolation and identification of two new nitrogenous derivatives, alstoniaphyllines A (1) and B (2), a new indole alkaloid, alstoniaphylline C (4), and eight known alkaloids (3, 5-11). Alstonisine (9) exhibited antiplasmodial activity against Plasmodium falciparum, with an IC50 of 7.6 μM.
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Affiliation(s)
- Sarot Cheenpracha
- School of Science, University of Phayao, Maeka, Muang, Phayao 56000, Thailand.
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Maneerat W, Phakhodee W, Cheenpracha S, Ritthiwigrom T, Deachathai S, Laphookhieo S. Clausenawallines G-K, carbazole alkaloids from Clausena wallichii twigs. Phytochemistry 2013; 88:74-78. [PMID: 23360667 DOI: 10.1016/j.phytochem.2012.12.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 11/17/2012] [Accepted: 12/28/2012] [Indexed: 06/01/2023]
Abstract
Five carbazole alkaloids, clausenawallines G-K (1-5), along with 12 known alkaloids (6-17) were isolated from the twigs of Clausena wallichii. Their structures were established using spectroscopic methods and the antibacterial activity of compounds 1-5 was evaluated.
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Affiliation(s)
- Wisanu Maneerat
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Muang, Chiang Rai 57100, Thailand
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Wongsa N, Sommart U, Ritthiwigrom T, Yazici A, Kanokmedhakul S, Kanokmedhakul K, Willis AC, Pyne SG. Concise Synthesis of α-Substituted 2-Benzofuranmethamines and Other 2-Subsituted Benzofurans via α-Substituted 2-Benzofuranmethyl Carbocation Intermediates. J Org Chem 2013; 78:1138-48. [DOI: 10.1021/jo302554v] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Nikhom Wongsa
- School of
Chemistry, University of Wollongong, Wollongong,
New South Wales,
2522, Australia
- Natural
Products Research Unit,
Department of Chemistry and Center of Excellence for Innovation in
Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Ubonta Sommart
- School of
Chemistry, University of Wollongong, Wollongong,
New South Wales,
2522, Australia
- Department of Chemistry, Prince of Songkla University, Songkhla, 90112, Thailand
| | - Thunwadee Ritthiwigrom
- School of
Chemistry, University of Wollongong, Wollongong,
New South Wales,
2522, Australia
| | - Arife Yazici
- School of
Chemistry, University of Wollongong, Wollongong,
New South Wales,
2522, Australia
| | - Somdej Kanokmedhakul
- Natural
Products Research Unit,
Department of Chemistry and Center of Excellence for Innovation in
Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Kwanjai Kanokmedhakul
- Natural
Products Research Unit,
Department of Chemistry and Center of Excellence for Innovation in
Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Anthony C. Willis
- Research School of Chemistry, Australian National University, Canberra, ACT, 0200,
Australia
| | - Stephen G. Pyne
- School of
Chemistry, University of Wollongong, Wollongong,
New South Wales,
2522, Australia
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Siridechakorn I, Phakhodee W, Ritthiwigrom T, Promgool T, Deachathai S, Cheenpracha S, Prawat U, Laphookhieo S. Antibacterial dihydrobenzopyran and xanthone derivatives from Garcinia cowa stem barks. Fitoterapia 2012; 83:1430-4. [DOI: 10.1016/j.fitote.2012.08.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Trisuwan K, Ritthiwigrom T. Benzophenone and xanthone derivatives from the inflorescences of Garcinia cowa. Arch Pharm Res 2012; 35:1733-8. [DOI: 10.1007/s12272-012-1004-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 05/22/2012] [Accepted: 05/29/2012] [Indexed: 11/30/2022]
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Tantapakul C, Phakhodee W, Ritthiwigrom T, Cheenpracha S, Prawat U, Deachathai S, Laphookhieo S. Rearranged benzophenones and prenylated xanthones from Garcinia propinqua twigs. J Nat Prod 2012; 75:1660-1664. [PMID: 22963193 DOI: 10.1021/np300487w] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The first phytochemical investigation of Garcinia propinqua has led to the isolation and identification of three new compounds, including two rearranged benzophenones, doitunggarcinones A (1) and B (2), and a xanthone, doitunggarcinone C (3), together with seven known compounds (4-10). The structures of 1-3 were elucidated on the basis of spectroscopic methods, including UV, IR, NMR, and MS. The antibacterial activity of the 10 isolates was evaluated against Escherichia coli TISTR 780, Salmonella typhimurium TISTR 292, Staphylococcus aureus TISTR 1466, and methicillin-resistant Staphylococcus aureus (MRSA) SK1.
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Affiliation(s)
- Cholpisut Tantapakul
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Muang, Chiang Rai 57100, Thailand
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Ritthiwigrom T, W. G. Au C, G. Pyne S. Structure, Biological Activities and Synthesis of Hyacinthacine Alkaloids and Their Stereoisomers. Curr Org Synth 2012. [DOI: 10.2174/157017912803251765] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Maneerat W, Ritthiwigrom T, Cheenpracha S, Promgool T, Yossathera K, Deachathai S, Phakhodee W, Laphookhieo S. Bioactive carbazole alkaloids from Clausena wallichii roots. J Nat Prod 2012; 75:741-746. [PMID: 22482432 DOI: 10.1021/np3000365] [Citation(s) in RCA: 115] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Four new carbazole alkaloids, clausenawallines C-F (1-4), along with 18 known compounds (5-22) were isolated from the roots of Clausena wallichii. Compounds 3, 9, and 22 exhibited significant antibacterial activity against methicillin-resistant Staphylococcus aureus SK1 (MRSA SK1) and Staph. aureus TISTR 1466 with MIC values in the range 4-16 μg/mL, whereas compound 4 showed the highest cytotoxicity against oral cavity cancer (KB) and small-cell lung cancer (NCI-H187) with IC(50) values of 10.2 and 4.5 μM, respectively.
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Affiliation(s)
- Wisanu Maneerat
- Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Muang, Chiang Rai 57100, Thailand
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Maneerat W, Ritthiwigrom T, Cheenpracha S, Prawat U, Laphookhieo S. Clausenawallines A and B, two new dimeric carbazole alkaloids from the roots of Clausena wallichii. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.04.064] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ritthiwigrom T, Willis AC, Pyne SG. Total Synthesis of Uniflorine A, Casuarine, Australine, 3-epi-Australine, and 3,7-Di-epi-australine from a Common Precursor. J Org Chem 2009; 75:815-24. [DOI: 10.1021/jo902355p] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Thunwadee Ritthiwigrom
- School of Chemistry, University of Wollongong, Wollongong, New South Wales, 2522, Australia
| | - Anthony C. Willis
- Research School of Chemistry, Australian National University, Canberra, ACT, 0200, Australia
| | - Stephen G. Pyne
- School of Chemistry, University of Wollongong, Wollongong, New South Wales, 2522, Australia
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Affiliation(s)
- Thunwadee Ritthiwigrom
- School of Chemistry, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Stephen G. Pyne
- School of Chemistry, University of Wollongong, Wollongong, New South Wales 2522, Australia
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Davis AS, Ritthiwigrom T, Pyne SG. Synthetic and spectroscopic studies on the structures of uniflorines A and B: structural revision to 1,2,6,7-tetrahydroxy-3-hydroxymethylpyrrolizidine alkaloids. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.02.110] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
Nine xanthones, nigrolineaxanthones A-I, together with nine known xanthones, were isolated from the crude methanol extract of the stem bark of Garcinia nigrolineata; two of which have previously been reported as synthetic xanthones. The structures were elucidated by analysis of spectroscopic data, especially using 1D and 2D NMR spectroscopic data.
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Affiliation(s)
- Vatcharin Rukachaisirikul
- Department of Chemistry, Faculty of Science, Prince of Songkla University, Songkhla, 90112, Thailand.
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