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Paper | Regular issue | Vol 71, No. 8, 2007, pp.1779-1785
Published online, 15th May, 2007
DOI: 10.3987/COM-07-11065
New Constituents from the Roots of Erythrina x bidwillii

Hitoshi Tanaka,* Hisanori Hattori, Masaru Sato, Ryozo Yamaguchi, Toshio Fukai, Toshihiro Tanaka, and Eiji Sakai

*Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan


Three new compounds, erythbidins C-E (1-3), together with five known compounds 4-8 were isolated from the roots of Erythrina x bidwillii. Their structures were established on the basis of spectroscopic evidence. Among the isolated compounds, erythbidin E (3) showed a potent antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA).