title: Chemical constituents of the stems and twigs of Lindera umbellata.
abstract: The chemical constituents of the stems and twigs of Lindera umbellata were investigated, and a new lignan derivative and four known compounds were isolated. The structure of the new compound was established as (2S,3S)-2,3-bis[(4-hydroxy-3,5-dimethoxyphenyl)methyl]-1,4-butanediol 1,4-diferulate on the basis of spectroscopic analysis and the result of alkaline methanolysis. The isolated compounds were evaluated for their scavenging effects on 1,1-diphenyl-2-picrylhydrazyl and O(2) (-) radicals.
authors: School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan. kurodam@toyaku.ac.jp
authors: Minpei
authors: M
authors: Kuroda
authors: Koichiro
authors: K
authors: Sakurai
authors: Yoshihiro
authors: Y
authors: Mimaki
mesh_terms: D001713:Biphenyl Compounds / Q000737:chemistry; D016166:Free Radical Scavengers / Q000737:chemistry*; D005609:Free Radicals / Q000737:chemistry; D017705:Lignans / Q000737:chemistry*; D027443:Lindera / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry; D010545:Peroxides / Q000737:chemistry; D010851:Picrates / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry*
chemical_list: D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D005609:Free Radicals; D017705:Lignans; D010545:Peroxides; D010851:Picrates; C004931:1,1-diphenyl-2-picrylhydrazyl; D010100:Oxygen