title: Derrisisoflavones H-K and One Isoflavan Derivative from Derris robusta.
abstract: Four hitherto unknown prenylated isoflavonoids, named derrisisoflavones H-K (1-4) and one new isoflavan, namely 6-hydroxyisosativan (5), were isolated from the ethanol extract of Derris robusta. Their structures were elucidated on the basis of extensive spectroscopic studies. To our knowledge, derrisisoflavones J (3) and K (4) are the first examples of hydroxyethylated isoflavonoid.
authors.affiliation: BioBioPha Co., Ltd., Kunming, 650201, People's Republic of China.
authors.forename: Guo-Zhu
authors.initials: GZ
authors.lastname: Wei
authors.affiliation: BioBioPha Co., Ltd., Kunming, 650201, People's Republic of China.
authors.forename: Mei-Fen
authors.initials: MF
authors.lastname: Mao
authors.affiliation: BioBioPha Co., Ltd., Kunming, 650201, People's Republic of China.
authors.forename: Xiang-Mei
authors.initials: XM
authors.lastname: Li
authors.affiliation: BioBioPha Co., Ltd., Kunming, 650201, People's Republic of China.
authors.forename: Fu-Cai
authors.initials: FC
authors.lastname: Ren
authors.affiliation: BioBioPha Co., Ltd., Kunming, 650201, People's Republic of China. f.wang@mail.biobiopha.com.
authors.forename: Fei
authors.initials: F
authors.lastname: Wang
keywords: Derris robusta; Derrisisoflavone; Isoflavan; Isoflavonoid