Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Onoomar Poobrasert"'
Publikováno v:
Pharmaceutical Biology. 48:740-744
Chemical constituents as well as cytotoxic and insecticidal activity of the crude methanol extract from the leaves of Phyllanthus reticulatus Poir. (Euphorbiaceae) were investigated. (5R*,6R*)-4,6-Dimethoxycarbonyl-5-[2',3',4'-trihydroxy-6'-(methoxyc
Autor:
Yu Shao, Edward J. Kennelly, Mou-Tuan Huang, Stephen A. Garrison, Onoomar Poobrasert, Geoffrey A. Cordell, Chee-Kok Chin, Chi-Tang Ho
Publikováno v:
Acta Horticulturae. :277-282
Publikováno v:
Journal of Natural Products. 60:743-746
A further investigation of Aster lingulatus has led to the isolation of two additional novel triterpene saponins, asterlingulatoside C [3-O-beta-D-glucopyranosyl-3 beta, 16 alpha-dihydroxyolean-12-en-28-oic acid 28-O-beta-D-xylopyranosyl-(1--4)-alpha
Publikováno v:
Natural product research. 26(10)
Methanolic extracts of 18 Thai plants from Doi Tung, the north of Thailand, were examined for brine shrimp lethality and antioxidative activity using 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. In brine shrimp lethality, the highly toxic plant extrac
Autor:
Vichai Reutrakul, Chris Beecher, Norman R. Farnsworth, Geoffrey A. Cordell, Thawatchai Santisuk, J. M. Pezzuto, Howard L. Constant, A. D. Kinghorn, Onoomar Poobrasert
Publikováno v:
ChemInform. 29
Autor:
Vichai Reutrakul, Thawatchai Santisuk, Geoffrey A. Cordell, Chris Beecher, John M. Pezzuto, Howard L. Constant, Norman R. Farnsworth, A. Douglas Kinghorn, Onoomar Poobrasert
Publikováno v:
Phytochemistry. 47:1661-1663
1,2-Dimethoxy-5-hydroxyxanthone, a new xanthone, was isolated from the twigs of Mammea siamensis, in addition to six known xanthones (5-hydroxy-1-methoxy-, 1,3-dimethoxy-5-hydroxy-, 2,5-dihydroxy-1-methoxy-, 1,7-dihydroxy-, 1,3,7-trihydroxy- and 3,5-
Publikováno v:
Journal of Natural Products. 60:578-580
The red, o-quinone degradation product of physostigmine (1), rubreserine (3), was refluxed in absolute EtOH under NH 3 gas to afford two blue, isomeric products, compounds 5 and 6. The structures of these two blue compounds were derived from the cons
Publikováno v:
Journal of Natural Products. 59:1087-1089
Rubreserine (3), a known degradation product of physostigmine (1), and a new indole derivative, 4, were isolated when 1 was refluxed with NH 4 OH. The structure of the rearrangement product of 1, compound 4, was deduced through the interpretation of
Autor:
Geoffrey A. Cordell, Edward J. Kennelly, Yu Shao, Mou-Tuan Huang, Chi-Tang Ho, Chee-Kok Chin, Stephen A. Garrison, Onoomar Poobrasert
Publikováno v:
Planta medica. 63(3)
Two oligofurostanosides were isolated from the seeds of Asparagus officinalis L and their structures characterized as 3-O-[alpha-L-rhamnopyranosyl-(1-->2)-(alpha-L-rhamnopyranosyl- (1-->4))-beta-D-glucopyranosyl]-26-O-[beta-D-glucopyranosyl]-(25R) -2