title: Identification of a new cytotoxic biflavanone from Selaginella doederleinii.
abstract: A new biflavanone, 2,2'',3,3''-tetrahydrorobustaflavone 7,4',7''-trimethyl ether (1) was isolated from the whole plant of Selaginella doederleinii HIERON. (Selaginellaceae) together with the known biflavonoid, robustaflavone 7,4',7''-trimethyl ether (2) as the cytotoxic constituents against the three human cancer cell lines, HCT, NCI-H358, and K562. The structure of the new compound 1 was elucidated by spectral analysis including various 1D- and 2D-NMR experiments.
authors.affiliation: College of Pharmacy and The Center for Cell Signaling & Drug Discovery Research, Ewha Womans University, Seoul, Korea.
authors.forename: Na-Youn
authors.initials: NY
authors.lastname: Lee
authors.forename: Hye-Young
authors.initials: HY
authors.lastname: Min
authors.forename: Jun
authors.initials: J
authors.lastname: Lee
authors.forename: Joo-Won
authors.initials: JW
authors.lastname: Nam
authors.forename: Yoo-Jin
authors.initials: YJ
authors.lastname: Lee
authors.forename: Ah-Reum
authors.initials: AR
authors.lastname: Han
authors.forename: Adam
authors.initials: A
authors.lastname: Wiryawan
authors.forename: Wahyu
authors.initials: W
authors.lastname: Suprapto
authors.forename: Sang Kook
authors.initials: SK
authors.lastname: Lee
authors.forename: Eun-Kyoung
authors.initials: EK
authors.lastname: Seo