title: A new lignan glycoside from the fruits of Cornus kousa Burg.
abstract: A new lignan glycoside, (7'S, 8'R)-dihydrodehydrodiconiferyl alcohol-4'-O-beta-D-xylopyranoside (1), named cornuskoside A, was isolated from the fruits of Cornus kousa. The structure of the compound was determined by spectroscopy, including FABMS, UV, IR, (1)H-and 13C-NMR, DEPT and 2D-NMR (COSY, HSQC, and HMBC). This new lignan glycoside, along with its aglycone, (7'S, 8'R)-dihydrodehydrodiconiferyl alcohol (3), and another lignan with a similar skeleton, (-)-balanophonin (2), which have been previously isolated from this plant, were evaluated for cytotoxicity in human cancer cell lines such as HeLa, MCF-7, SK-MEL-5, and SK-OV-3. Compounds 2 and 3 showed cytotoxicity against HeLa [IC50 = 29.1 microM (2), 45.5 microM (3)], MCF-7 [IC50 = 29.2 microM (2), 28.2 microM (3)], SK-MEL-5 [IC50 = 31.3 microM (2), 32.3 microM (3)], and SK-OV-3 [IC50 = 33.4 microM (2), 43.4 microM (3)] cell lines.
authors.affiliation: Graduate School of Biotechnology & Plant Metabolism Research Center, Kyung Hee University, Yongin, Korea.
authors.forename: Dae-Young
authors.initials: DY
authors.lastname: Lee
authors.forename: Ki-Hyun
authors.initials: KH
authors.lastname: Yoo
authors.forename: In-Sik
authors.initials: IS
authors.lastname: Chung
authors.forename: Ji-Young
authors.initials: JY
authors.lastname: Kim
authors.forename: Dae-Kyun
authors.initials: DK
authors.lastname: Chung
authors.forename: Dae-Keun
authors.initials: DK
authors.lastname: Kim
authors.forename: Sung-Hoon
authors.initials: SH
authors.lastname: Kim
authors.forename: Nam-In
authors.initials: NI
authors.lastname: Baek
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000494:pharmacology*; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D029768:Cornus / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D006027:Glycosides / Q000494:pharmacology; D006367:HeLa Cells; D006801:Humans; D006868:Hydrolysis; D007202:Indicators and Reagents; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: C531280:(7'S, 8'R)-dihydrodehydrodiconiferyl alcohol-4'-O-beta-D-xylopyranoside; D000972:Antineoplastic Agents, Phytogenic; D006027:Glycosides; D007202:Indicators and Reagents; D017705:Lignans