title: Two new lignans from Lindera obtusiloba blume.
abstract: Two new furanolignans (3, 5), together with three known lignans (1, 2, 4), were isolated from the stem of Lindera obtusiloba (Lauraceae). The structures of the compounds were determined as actifolin (1), pluviatilol (2), 5,6-dihydroxymatairesinol (3), (+)-syringaresinol (4), and (+)-9'-O-trans-feruloyl-5,5'-dimethoxylariciresinol (5) on the basis of physicochemical and spectroscopic evidences. Compounds 1, 2, 3, and 5 showed cytotoxicity against a small panel of human tumor cell lines with ED50 values of 3.40 to approximately 19.27 microg/ml.
authors.affiliation: Natural Products Laboratory, College of Pharmacy, Sung Kyun Kwan University, Suwon, Korea.
authors.forename: H C
authors.initials: HC
authors.lastname: Kwon
authors.forename: S U
authors.initials: SU
authors.lastname: Choi
authors.forename: J O
authors.initials: JO
authors.lastname: Lee
authors.forename: K H
authors.initials: KH
authors.lastname: Bae
authors.forename: O P
authors.initials: OP
authors.lastname: Zee
authors.forename: K R
authors.initials: KR
authors.lastname: Lee
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification* / Q000494:pharmacology; D002850:Chromatography, Gel; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D007723:Korea; D017705:Lignans / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010946:Plants, Medicinal / Q000737:chemistry*; D013055:Spectrophotometry, Infrared
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D017705:Lignans