title: Constituents of the roots of Rubia yunnanensis.
abstract: Four new naphthohydroquinones, rubinaphthins A (1), B (2), C (3), and D (4), together with 11 known compounds were isolated and characterized from the roots of Rubia yunnanensis. The structures of 1-4 were elucidated by spectral analysis and chemical transformation.
authors.affiliation: Department of Chemistry, National Cheng Kung University, Tainan, Taiwan, Republic of China.
authors.forename: Meei-Jen
authors.initials: MJ
authors.lastname: Liou
authors.forename: Pei-Lin
authors.initials: PL
authors.lastname: Wu
authors.forename: Tian-Shung
authors.initials: TS
authors.lastname: Wu
mesh_terms: D006873:Hydroquinones / Q000737:chemistry / Q000302:isolation & purification*; D019666:Rubiaceae / Q000737:chemistry*
chemical_list: D006873:Hydroquinones