title: Lignans and sesquiterpenes from Magnolia praecocissima.
abstract: A new lignan 1 was isolated together with the five known lignans 2-6 and four sesquiterpenes 7-10 from the seeds of Magnolia praecocissima. The structure of 1 was elucidated by analysis of spectroscopic data and chemical reaction. Furthermore, the absolute configurations of 1, 2, and 3 were determined by the modified Mosher's method.
authors.affiliation: Institute of Pharmacognosy, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan.
authors.forename: Hironobu
authors.initials: H
authors.lastname: Takahashi
authors.forename: Seiko
authors.initials: S
authors.lastname: Yoshioka
authors.forename: Shoichi
authors.initials: S
authors.lastname: Kawano
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Azuma
authors.forename: Yoshiyasu
authors.initials: Y
authors.lastname: Fukuyama
mesh_terms: D000107:Acetylation; D002850:Chromatography, Gel; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D029562:Magnoliaceae / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry; D012639:Seeds / Q000737:chemistry; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D017705:Lignans; D010936:Plant Extracts; D012717:Sesquiterpenes