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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Acknowledgment
The work was supported financially by the Chinese National Foundation under the Program for Eminent Young Scientists (Grant No. 30925045) and under the auspices of the International Partnership Program for Creative Research Groups.
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Materials presented at the 9th International Symposium on the Chemistry of Natural Compounds (SCNC, People’s Republic of China, Urumchi, Oct. 16–19, 2011).
Translated from Khimiya Prirodnykh Soedinenii, No. 4, July–August, 2012, pp. 507–509.
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Ghopur, H., Usmanova, S.K., Ayupbek, A. et al. A new chromone from seeds of Cydonia oblonga . Chem Nat Compd 48, 562–564 (2012). https://doi.org/10.1007/s10600-012-0310-5
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DOI: https://doi.org/10.1007/s10600-012-0310-5