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2 hydroxyxanthone/calophyllum
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5 tulemused
Cytotoxic prenylated xanthones from Calophyllum inophyllum.
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Logi sisse
A new prenylated xanthone (1), named caloxanthone N, together with two known constituents, gerontoxanthone C (2) and 2-hydroxyxanthone (3), was isolated from the ethanolic extract of the twigs of Calophyllum inophyllum. Their structures were completely elucidated using a combination of 1D, 2D NMR
Caloinophyllin A, a new chromanone derivative from Calophyllum inophyllum roots.
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Logi sisse
A new chromanone derivative, namely caloinophyllin A (1), along with eight known compounds (2-9), nobiletin (2), pentamethylquercetin (3), 3,5,7,4'-tetramethoxyflavone (4), 5,7,4'-trimethoxyflavone (5), 1,5-dihydroxyxanthone (6), 1,8-dimethoxy-2-hydroxyxanthone (7), 1,6-dihydroxy-7-methoxyxanthone
[Studies on flavonoids from stems and leaves of Calophyllum inophyllum].
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OBJECTIVE
To study the chemical constituents from the stems and leaves of Calophyllum inophyllum.
METHODS
The compounds were isolated by column chromatography on silica gel, Sephadex LH-20 and preparative TLC. Their structures were elucidated by chemical methods and NMR, MS spectroscopic
Xanthones from Calophyllum teysmannii var. inophylloide.
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Logi sisse
Further study of the wood of Calophyllum teysmannii Miq. var. inophylloide yielded xanthones 7-hydroxy-1,2,8-trimethoxyxanthone, 6-hydroxy-1,2,5-trimethoxyxanthone, and 2-carbomethoxy-6-methoxyxanthone in addition to 3,8-dihydroxy-1,2,4-trimethoxyxanthone, 3-hydroxy-2,4-dimethoxyxanthone,
Bioguided fractionation and isolation of natural inhibitors of advanced glycation end-products (AGEs) from Calophyllum flavoramulum.
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Logi sisse
Advanced glycation end-products (AGEs) are associated with many pathogenic disorders such as Alzheimer's disease, pathogenesis of diabetes, atherosclerosis or endothelial dysfunction leading to cardiovascular events. Clusiaceae and Calophyllaceae families are rich in compounds like polyphenols which
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