Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Thunwadee Ritthiwigrom"'
Autor:
Thunwadee Ritthiwigrom
Publikováno v:
Maejo International Journal of Science and Technology, Vol 7, Iss 02, Pp 212-231 (2013)
Garcinia cowa is an abundant source of bioactive phytochemicals. Phytochemical investigations of the plant parts indicated that the fruit, twig and stem are the best source of secondary metabolites, providing flavonoids, phloroglucinols and xanthones
Externí odkaz:
https://doaj.org/article/4ae5ec51348b4e43b62e9f3cc2ca2a36
Autor:
Sumalee Kamchonwongpaisan, Surat Laphookhieo, Roonglawan Rattanajak, Thunwadee Ritthiwigrom, Stephen G. Pyne, Chiramet Auranwiwat
Publikováno v:
Tetrahedron. 72:6837-6842
The first phytochemical investigation of the leaf and branch extracts of Garcinia mckeaniana has led to the isolation and characterization of five new polyoxygenated and prenylated xanthones, mckeanianones A-E ( 1 – 5 ), and one new biflavone, mcke
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39043bb210889429c87dad7e11a96dc3
https://doi.org/10.1016/j.tet.2016.09.018
https://doi.org/10.1016/j.tet.2016.09.018
Autor:
Jitrayut Jitonnom, Surat Laphookhieo, Sarot Cheenpracha, Manutchaya Komek, Thunwadee Ritthiwigrom
Publikováno v:
Steroids. 108:92-98
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e45c148294ec27894fdc39fd92300a2
https://doi.org/10.1016/j.steroids.2016.01.018
https://doi.org/10.1016/j.steroids.2016.01.018
Autor:
Sarot Cheenpracha, Atchara Jaidee, Thunwadee Ritthiwigrom, Kongkiat Trisuwan, Stephen G. Pyne, Thanika Promchai, Surat Laphookhieo, Roonglawan Rattanajak, Sumalee Kamchonwongpaisan
Publikováno v:
Journal of Natural Products. 79:978-983
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 i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc7053888084b29143a69c8217b72219
https://doi.org/10.1021/acs.jnatprod.5b01054
https://doi.org/10.1021/acs.jnatprod.5b01054
Autor:
Thunwadee Ritthiwigrom, Teerayut Sriyatep, Wisanu Maneerat, Surat Laphookhieo, Acharavadee Pansanit, Ittipon Siridechakorn, Raymond J. Andersen
Publikováno v:
Journal of Natural Products. 78:265-271
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 s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78abe43e15f8310463bd23baba8a5e1c
https://doi.org/10.1021/np5008476
https://doi.org/10.1021/np5008476
Autor:
Stephen G. Pyne, Chiramet Auranwiwat, Thunwadee Ritthiwigrom, Aroonchai Saiai, Kongkiat Trisuwan
Publikováno v:
Fitoterapia. 98:179-183
A phytochemical investigation of the acetone extract from the immature fruits of Garcinia cowa led to the isolation of two novel tetraoxygenated xanthones, garcicowanones A (1) and B (2), together with eight known tetraoxygeanted xanthones. Their str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b0726d361913fb34cfd3fa0560da207
https://doi.org/10.1016/j.fitote.2014.08.003
https://doi.org/10.1016/j.fitote.2014.08.003
Autor:
Kongkiat Trisuwan, Stephen G. Pyne, Thunwadee Ritthiwigrom, Surat Laphookhieo, Chiramet Auranwiwat
Publikováno v:
Phytochemistry Letters. 9:113-116
Two novel carbazole alkaloids, guillauminines A and B (1 and 2), and sixteen known compounds were isolated and identified from the acetone extract of Clausena guillauminii roots. Their structures were elucidated by spectroscopic methods. The cytotoxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ede916a34ff2f5f2e00ed1c8768a939f
https://doi.org/10.1016/j.phytol.2014.05.003
https://doi.org/10.1016/j.phytol.2014.05.003
Autor:
Thunwadee Ritthiwigrom, Surat Laphookhieo, Sarot Cheenpracha, Wisanu Maneerat, Ittipon Siridechakorn, Tawanun Sripisut
Publikováno v:
Phytochemistry Letters. 8:77-80
The genus Garcinia is a well known rich source of bioactive xanthones and benzophenones. Some species of this genus also produce flavonoids and biphenyls as minor constituents. In this study, two new biphenyls, doitungbiphenyls A ( 1 ) and B ( 2 ), a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52889f695091b36e0a093ab9118d382b
https://doi.org/10.1016/j.phytol.2014.02.004
https://doi.org/10.1016/j.phytol.2014.02.004
Autor:
Theeraphan Machan, Nirun Ruankeaw, Suwanna Deachathai, Thunwadee Ritthiwigrom, Wong Phakhodee, Ittipon Siridechakorn, Surat Laphookhieo, Sarot Cheenpracha
Publikováno v:
Phytochemistry Letters. 7:186-189
The first phytochemical investigation of Caesalpinia furfuracea twigs led to the isolation and identification of four new compounds including two isopimarane diterpenes, caesalfurfuric acids A ( 1 ) and B ( 2 ), and two flavans, (2 R )-caesalflavans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adaa16e010343b37a1097744053c65bd
https://doi.org/10.1016/j.phytol.2013.12.003
https://doi.org/10.1016/j.phytol.2013.12.003
Publikováno v:
Journal of Natural Products. 76:723-726
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e508e3352a612921797586bf4f75269
https://doi.org/10.1021/np3006937
https://doi.org/10.1021/np3006937