Three chromone components from Aloe vera leaves

被引：75

作者：

Okamura, N ^{[1
]}

Hine, N ^{[1
]}

Harada, S ^{[1
]}

Fujioka, T ^{[1
]}

Mihashi, K ^{[1
]}

Yagi, A ^{[1
]}

机构：

[1] FUKUOKA UNIV,FAC PHARMACEUT SCI,FUKUOKA 81401,JAPAN

来源：

PHYTOCHEMISTRY | 1996年 / 43卷 / 02期

关键词：

Aloe vera; Liliaceae; 8-C-glucosyl-7-O-methyl-(S)-aloesol; isoaloeresin D; aloeresin E; inhibition of mushroom tyrosinase;

D O I：

10.1016/0031-9422(96)00306-8

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 new chromone components, 8-C-glucosyl-7-O-methyl-(S)-aloesol, isoaloeresin D and aloeresin E were isolated from the leaves of Aloe vera. Their structures have been established from spectroscopic studies; the structures of 8-C-glucosyl-7-O-methyl-(S)-aloesol, isoaloeresin D and aloeresin E were shown to be 8-C-beta-D-glucopyranosyl-2-[(S)-2-hydroxy]propyl-7-methoxy-5- methylchromone, 8-C-beta-D-[2'-O-(E)-p-coumaroyl]glucopyranosyl-2- [(S)-2-hydroxy]propyl-7-methoxy-5-methylchromone and 8-C-beta-D-[2'-O-(E)-cinnamoyl]glucopyranosyl-2- [(S)-2-hydroxy]propyl-7-methoxy-5-methylchromone, respectively. The inhibitory action of these compounds against tyrosine oxidation by mushroom tyrosinase was examined. Copyright (C) 1996 Elsevier Science Ltd

引用

页码：495 / 498

页数：4