Phenolic constituents and antioxidant activity of an extract of Anthurium versicolor leaves

被引:147
作者
Aquino, R
Morelli, S
Lauro, MR
Abdo, S
Saija, A
Tomaino, A
机构
[1] Univ Salerno, Dipartimento Sci Farmaceut, I-84084 Fisciano, Salerno, Italy
[2] Univ Salerno, Scuola Specializzaz Sci & Tecnol Cosmet, I-84084 Fisciano, Salerno, Italy
[3] Escuela Super Politecn Chimborazo, Fac Ciencias, Riobamba, Ecuador
[4] Univ Roma La Sapienza, Dipartimento Farmacol Sostanze Nat & Fisiol Gen, I-00100 Rome, Italy
[5] Univ Messina, Dipartimento Farmaco Biol, I-98168 Messina, Italy
来源
JOURNAL OF NATURAL PRODUCTS | 2001年 / 64卷 / 08期
关键词
D O I
10.1021/np0101245
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Fractionation of a methanolic extract of the leaves of Anthurium versicolor has resulted in the isolation of two main fractions, I and II. Both the extract and the fractions were assayed for their radical-scavenging activity by means of an in vitro test (bleaching of the stable 1,1-diphenyl-2-picrylhydrazyl radical) and showed a significant radical-scavenging effect. Subsequent chromatographic fractionation of the most active fraction, II, has led to the isolation and characterization, as major constituents, of four new flavone glycosides, acacetin 6-C-[alpha -L-rhamnopyranosyl-(1 -->3)-beta -D-glucopyranoside] (1), acacetin 6-C-[beta -D-xylopyranosyl-(1 -->6)- beta -D-glucopyranoside] (2), acacetin 6-C-[beta -D-apiofuranosyl-(1 -->3)-beta -D-glucopyranoside] (3), and acacetin 8-C-[alpha -L-rhamnopyranosyl-(1 -->3)-beta -D-glucopyranoside] (4), as well as vitexin (apigenin-8-C-beta -D-glucopyranoside) and rosmarinic acid. The structures of 1-4 were determined using spectroscopic methods.
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收藏
页码:1019 / 1023
页数:5
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