title: Chemical constituents from the leaves of Magnolia denudata.
abstract: 20 compounds were isolated from the leaves of Magnolia denudata including 16 lignans, which belong to 6 structural types. Except for (7R, 8S, 1'S)-delta8' -1', 4'- dihydro-5'-methoxy-3,4-methylenedioxy-4'-oxo-7.0.2', 8.1'-neolignan (6), magliflonenone (9), 2, 5'-diene-2', 8'-epoxy-5'-methoxy-8-methyl-4'-oxo-3,4- methylenedioxy-spiro (5, 5)-undecane (10), veraguensin (16) and beta-sitosterol (20), the other 15 compounds were obtained from this species for the first time. The absolute configurations of 3 compounds (1, 4, 10) were determined by CD spectroscopy for the first time. The anti-inflammatory activities of compounds 1, 2 and 16 were assessed and 2 was shown to have significant inhibition effect on mice hind-paw edema induced by carrageenan.
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing.
authors.forename: J
authors.initials: J
authors.lastname: Du
authors.forename: M L
authors.initials: ML
authors.lastname: Wang
authors.forename: R Y
authors.initials: RY
authors.lastname: Chen
authors.forename: D Q
authors.initials: DQ
authors.lastname: Yu
mesh_terms: D000818:Animals; D000893:Anti-Inflammatory Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D001572:Benzofurans / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002681:China; D004487:Edema / Q000188:drug therapy; D008401:Gas Chromatography-Mass Spectrometry; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D029562:Magnoliaceae / Q000737:chemistry*; D051379:Mice; D019906:Nuclear Magnetic Resonance, Biomolecular; D009904:Optical Rotation; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D013055:Spectrophotometry, Infrared
chemical_list: D000893:Anti-Inflammatory Agents; D001572:Benzofurans; D017705:Lignans; D010936:Plant Extracts; C451581:fargesone A