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J Nat Prod. 2003 Jun;66(6):851-4.

Antioxidative glycosides from the leaves of Ligustrum robustum.

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  • 1Department of Biology, The Chinese University of Hong Kong, Shatin, Hong Kong, People's Republic of China.

Abstract

Phytochemical investigation of the ethanol extract of the leaves of Ligustrum robustum, monitored by a bioassay involving the hemolysis of red blood cells induced by 2,2'-azo-bis(2-amidinopropane) dihydrochloride, led to the isolation of three new glycosides, ligurobustosides M (1), N (2), and O (3), along with 10 known ones, osmanthuside B (4), osmanthuside B6 (5), acteoside (6), ligupurpuroside A (7), ligupurpuroside B (8), ligurobustoside C (9), ligurobustoside E (10), ligurobustoside I (11), cosmosiin (12), and rhoifolin (13). The structures of the new compounds were elucidated by spectroscopic methods. Seven of the glycosides showed stronger antioxidant effects than the standard, trolox.

PMID:
12828473
[PubMed - indexed for MEDLINE]
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