title: New sesquiterpenes from Ferula ferulaeoides (Steud.) Korovin. VI. Isolation and identification of three new dihydrofuro[2,3-b]chromones.
abstract: Three novel 2-prenyl-dihydrofurochromone-type sesquiterpenoid derivatives, 2,3-dihydro-7-hydroxy-2S*,3R*-dimethyl-2-[4,8-dimethyl-3(E),7-nonadienyl]-furo[2,3-b]chromone, 2,3-dihydro-7-hydroxy-2S*,3R*-dimethyl-2-[4-methyl-5-(4-methyl-2-furyl)-3(E),7-pentenyl]-furo[2,3-b]chromone, and 2,3-dihydro-7-hydroxy-2R*,3R*-dimethyl-2-[4-methyl-5-(4-methyl-2-furyl)-3(E),7-pentenyl]-furo[2,3-b]chromone, were isolated from the roots of Ferula ferulaeoides. The structures were established by comprehensive spectral analysis. The biosynthetic pathway leading to these 2-prenyl-dihydrofurochromone-type sesquiterpenoids is proposed based on their structures.
authors.affiliation: Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan.
authors.forename: Akito
authors.initials: A
authors.lastname: Nagatsu
authors.forename: Kimio
authors.initials: K
authors.lastname: Isaka
authors.forename: Keisuke
authors.initials: K
authors.lastname: Kojima
authors.forename: Purev
authors.initials: P
authors.lastname: Ondognii
authors.forename: Oyun
authors.initials: O
authors.lastname: Zevgeegiin
authors.forename: Purevsuren
authors.initials: P
authors.lastname: Gombosurengyin
authors.forename: Khishgee
authors.initials: K
authors.lastname: Davgiin
authors.forename: Baig
authors.initials: B
authors.lastname: Irfan
authors.forename: Choudhary Muhammad
authors.initials: CM
authors.lastname: Iqubal
authors.forename: Yukio
authors.initials: Y
authors.lastname: Ogihara
mesh_terms: D001209:Asia, Central; D002867:Chromones / Q000737:chemistry* / Q000302:isolation & purification; D005309:Ferula / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008986:Mongolia; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry; D012717:Sesquiterpenes / Q000737:chemistry*
chemical_list: D002867:Chromones; D012717:Sesquiterpenes