A new chromone from seeds of Cydonia oblonga
CHEMISTRY OF NATURAL COMPOUNDS（2012）
Abstract
The new chromone 5,7-dihydroxy-2-n-pentacosanylchromen-4-one (1) in addition to the three known compounds ursolic acid (2), tormentic acid (3), and β-daucosterol (4) were isolated from seeds of Cydonia oblonga . Their structures were determined based on their 1D and 2D NMR and HR-ESI-MS spectral data.
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Key words
Cydonia oblonga,5,7-dihydroxy-2-n-pentacosanylchromen-4-one,ursolic acid,tormentic acid,β-daucosterol
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