title: Six new constituents from the roots of Erythrina variegata.
abstract: Three new isoflavonoids, eryvarins M-O (1-3), two new 2-arylbenzofurans, eryvarins P and Q (4 and 5), and a new 3-aryl-2,3-dihydrobenzofuran, eryvarin R (6), together with three known compounds, were isolated from the roots of Erythrina variegata. The structures of these compounds were established by spectroscopic analysis. Eryvarin R (6) is an unusual 3-aryl-2,3-dihydrobenzofuran derivative with a formyl (CHO) group. Eryvarin Q (5) showed potent antibacterial activity against methicillin-resistant Staphylococcus aureus.
authors.affiliation: Faculty of Pharmacy, Meijo University, Yagoto, Tempaku-ku, Nagoya 468-8503, Japan. hitoshi@ccmfs.meijo-u.ac.jp
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Tanaka
authors.forename: Miyuki
authors.initials: M
authors.lastname: Hirata
authors.forename: Hideo
authors.initials: H
authors.lastname: Etoh
authors.forename: Magoichi
authors.initials: M
authors.lastname: Sako
authors.forename: Masaru
authors.initials: M
authors.lastname: Sato
authors.forename: Jin
authors.initials: J
authors.lastname: Murata
authors.forename: Hiroko
authors.initials: H
authors.lastname: Murata
authors.forename: Dedy
authors.initials: D
authors.lastname: Darnaedi
authors.forename: Toshio
authors.initials: T
authors.lastname: Fukai
mesh_terms: D004895:Erythrina; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification*; D018517:Plant Roots
chemical_list: D010936:Plant Extracts