POLYPHENOLS FROM PLATANUS-ACERIFOLIA BUDS .7. FURTHER NONPOLAR FLAVONOLS FROM PLATANUS-ACERIFOLIA BUDS

被引：9

作者：

KAOUADJI, M

RAVANEL, P

机构：

[1] Laboratoire de Pharmacognosie, UFR de Pharmacie, Université Joseph Fourier-Grenoble I Domaine de La Merci

来源：

PHYTOCHEMISTRY | 1990年 / 29卷 / 04期

关键词：

buds; C-methyl flavonols; C-prenyl flavonols; Platanaceae; Platanus acerifolia;

D O I：

10.1016/0031-9422(90)85466-S

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：

Three further flavonols have been identified from buds of Platanus acerifolia. Separations were made by column chromatography on polyamide and Sephadex LH20 as well as centrifugal TLC on silica gel and reversed phase HPLC. Structural elucidation of the peracetylated derivatives was achieved mainly by 1H and 13C NMR spectroscopy. The three related components, 8-methoxy-6-C-methyl-5,7-dihydroxyflavonol, 8-C- (1,1-dimethyl-2-propen-1-yl)-5,7-dihydroxyflavonol and 8-C-(1,1-dimethyl-2-propen-1-yl)-4′-methoxy-5,7-dihydroxyflavonol are characterized either by C-methylation or C-prenylation, as are all non-polar flavonoids isolated from this source. © 1990.

引用

页码：1348 / 1350

页数：3

共 9 条

[1]

AGRAWAL PK, 1981, HETEROCYCLES, V16, P2181

[2]

GOUDARD M, 1976, THESIS U CLAUDE BERN

[3] NOVEL METHYLATED FLAVONOLS WITH UNSUBSTITUTED B RING FROM PLATANUS-ACERIFOLIA BUDS [J].