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J Nat Prod. 2002 Dec;65(12):1773-6.

An extract of Tagetes lucida and its phenolic constituents as antioxidants.

Author information

1
Dipartimento di Scienze Farmaceutiche and Scuola di Specializzazione in Scienza e Tecnologia Cosmetiche, UniversitĂ  di Salerno, Invariante 11/C, 84084 Fisciano, Salerno, Italy. aquinorp@unisa.it

Abstract

Analysis of a methanolic extract of Tagetes lucida leaves has resulted in the isolation of a new flavonol glycoside, quercetagenin 3,4'-dimethyl ether 7-O-beta-D-glucopyranoside (1), two new phenolic acids, 3-(2-O-beta-D-glucopyranosyl-4-methoxyphenyl)propanoic acid (2) and its methylester (3), and known flavonols, aromatic acids, and 7-methoxycoumarin. Using the DPPH degrees test, the extract and some of its constituents showed a significant free-radical-scavenging effect in comparison to alpha-tocopherol and standard flavonols.

PMID:
12502312
DOI:
10.1021/np020018i
[Indexed for MEDLINE]
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