| Literature DB >> 18404329 |
Hitoshi Tanaka1, Hisanori Hattori, Toshihiro Tanaka, Eiji Sakai, Nobuyuki Tanaka, Aditya Kulkarni, Hideo Etoh.
Abstract
A new Erythrina alkaloid, 10-hydroxy-11-oxoerysotrine (1), has been isolated from the flowers of Erythrina herbacea together with five known compounds: erytharbine (2), 10,11-dioxoerysotrine (3), erythrartine (4), erysotramidine (5) and erysotrine-N-oxide (6). The structure of the new compound was elucidated on the basis of its spectral data, including 2-D NMR and mass (MS) spectra. The new compound is a rare C-10 oxygenated Erythrina alkaloid. The antioxidant activities of the isolated compounds 1-6 were evaluated by scavenging with peroxynitrite.Entities:
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Year: 2008 PMID： 18404329 DOI： 10.1007/s11418-007-0222-z
Source DB: PubMed Journal: J Nat Med ISSN： 1340-3443 Impact factor: 2.343