title: Eryvarins F and G, two 3-phenoxychromones from the roots of Erythrina variegata.
abstract: Two 3-phenoxychromones, eryvarins F and G, were isolated from the roots of Erythrina variegata. Their structures were established to be 3-(2,4-dihydroxyphenoxy)-7-hydroxy-6,8-di(3,3-dimethylallyl)chromen-4-one and 3-(2,4-dihydroxyphenoxy)-8-(3,3-dimethylallyl)-2,2-dimethylpyrano[5,6:6,7]chromen-4-one on the basis of spectroscopic and chemical evidence. Eryvarins F and G are unusual 3-phenoxychromone derivatives with two isoprenoid groups.
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: Hiroshi
authors.initials: H
authors.lastname: Shimizu
authors.forename: Magoichi
authors.initials: M
authors.lastname: Sako
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: D002850:Chromatography, Gel / Q000379:methods; D002867:Chromones / Q000737:chemistry* / Q000302:isolation & purification; D004895:Erythrina / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D013729:Terpenes / Q000737:chemistry
chemical_list: D002867:Chromones; D013729:Terpenes; C474269:eryvarin F; C474270:eryvarin G