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@article{719156, author = {Šmejkal, Karel and Grycová, Lenka and Marek, Radek and Lemiere, Filip and Jankovská, Dagmar and Forejtníková, Hana and Vančo, Ján and Suchý, Václav}, article_location = {Washington}, article_number = {8}, doi = {http://dx.doi.org/10.1021/np070063w}, keywords = {flavonoid; geranyl; natural product; NMR}, language = {eng}, issn = {0163-3864}, journal = {Journal of Natural Products}, title = {C-Geranyl Compounds from <i>Paulownia tomentosa</i> Fruits}, url = {http://dx.doi.org/10.1021/np070063w}, volume = {70}, year = {2007} }
TY - JOUR ID - 719156 AU - Šmejkal, Karel - Grycová, Lenka - Marek, Radek - Lemiere, Filip - Jankovská, Dagmar - Forejtníková, Hana - Vančo, Ján - Suchý, Václav PY - 2007 TI - C-Geranyl Compounds from <i>Paulownia tomentosa</i> Fruits JF - Journal of Natural Products VL - 70 IS - 8 SP - 1244 EP - 1244 PB - American Chemical Society SN - 01633864 KW - flavonoid KW - geranyl KW - natural product KW - NMR UR - http://dx.doi.org/10.1021/np070063w L2 - http://dx.doi.org/10.1021/np070063w N2 - Five geranylflavonoids, one prenylated flavonoid, and a simple flavanone were isolated from an ethanolic extract of Paulownia tomentosa fruit. Tomentodiplacol (1), 3-O-methyl-5-methoxydiplacol (2), 6-isopentenyl-3-O-methyltaxifolin (3), and dihydrotricin (4) are reported from a natural source for the first time and 3-O-methyldiplacone (6) for the first time from the genus Paulownia. The structures of the compounds were determined by mass spectrometry, including HR-MS, and by 1D and 2D NMR spectroscopy. The cytotoxicity and DPPH (2,2-diphenyl-1-picrylhydrazyl) quenching activity of some of these compounds were tested, with diplacone proving to be the best antioxidant, though the most cytotoxic compound. ER -
ŠMEJKAL, Karel, Lenka GRYCOVÁ, Radek MAREK, Filip LEMIERE, Dagmar JANKOVSKÁ, Hana FOREJTNÍKOVÁ, Ján VANČO and Václav SUCHÝ. C-Geranyl Compounds from \&{}lt;i\&{}gt;Paulownia tomentosa\&{}lt;/i\&{}gt; Fruits. \textit{Journal of Natural Products}. Washington: American Chemical Society, 2007, vol.~70, No~8, p.~1244-1248. ISSN~0163-3864. Available from: https://dx.doi.org/10.1021/np070063w.
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