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Study on Cadalene Compounds Purified from Zelkova serrata Wood I - Purification of 7-hydroxy-3-methoxycadalene and Its Distribution in Xylem -  

Choi, Joon-Weon (Dept. Forest Science, CALS, Seoul National University)
Mun, Sung-Hee (Div. Wood Chemistry & Microbiology, Korea Forest Research Institute)
Choi, Don-Ha (Div. Wood Chemistry & Microbiology, Korea Forest Research Institute)
Publication Information
Journal of the Korean Wood Science and Technology / v.36, no.6, 2008 , pp. 130-137 More about this Journal
Abstract
In this study cadalene, which is classified into sesquiterpenes constructed with 15 carbons of naphthalene skeleton, was isolated from ethanol extracts of Zelkova wood (Zelkova serrata) using successive silica gel column chromatography. The purified cadalene compound was subjected to structural analysis using HPLC, EI-MS and $^1H$, $^{13}C-NMR$. Its molecular weight was measured to 244 (m/z) and methyl and isopropyl group were attached at C1 and C4 position, as well as hydroxyl group at C7 and methoxyl group at C3 in the naphthalene skeleton, respectively. Yield of 7-hydroxy-3-methoxycadalene amounts to 0.03% based on air dried Zelkova wood powder. It was distributed only in xylem tissues(only in heartwood) of Zelkova wood, not in leaves and bark.
Keywords
Zelkova serrat; ethanol extracts; silica gel column chromatography; 7-hydroxy-3-methoxycadalene; sesquiterpene; heartwood;
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