ent-Eudesmane sesquiterpenoids, galloyl esters of the oak lactone precursor, and a 3-O-methylellagic acid glycoside from the wood of Platycarya strobilacea

被引:15
|
作者
Maeda, Hajime [1 ,2 ]
Kakoki, Narumi [1 ]
Ayabe, Mami [1 ]
Koga, Yuki [1 ]
Oribe, Tomoko [1 ]
Matsuo, Yosuke [1 ]
Tanaka, Takashi [1 ]
Kouno, Isao [1 ]
机构
[1] Nagasaki Univ, Grad Sch Biomed Sci, Nagasaki 8528521, Japan
[2] Nagasaki Agr & Forestry Tech Dev Ctr, Nagasaki 8540063, Japan
关键词
Platycarya strobilacea; Juglandaceae; Eudesmane; Tannin; Pyrolysis; TANNINS; ELLAGITANNINS; OCTALACTONE;
D O I
10.1016/j.phytochem.2011.02.020
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
ent-Eudesmane sesquiterpenoids, 8,11-dihydroxy-2,4-cycloeudesmane, 11-hydroxy-2,4-cycloeudesman-8-one and 2,4-cyclo-7(11)-eudesmen-8-one, were isolated from the wood of Platyallya strobilacea, which has been used as an aromatic tree since at least the 18th century. On charring the wood, 2,4-cyclo-7(11)-eudesmen-8-one was detected in the smoke. In the charred wood, the concentrations of ellagitannins, such as galloyl pedunculagin, dramatically decreased, whereas concentrations of pentagalloyl glucose, and other gallotannins were relatively stable. In addition, two other compounds, the 6'-O-m- and p-digalloyl oak lactone precursor and the 3-O-methylellagic acid 4'-O-(4 ''-O-galloyl)-xylopyranoside, were isolated from the charred wood along with m- and p-digallic acid. (C) 2011 Elsevier Ltd. All rights reserved.
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页码:796 / 803
页数:8
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