title: Three dihydroanthracenones from Gasteria bicolor.
abstract: The stem and leaves of Gasteria bicolor afforded three new dihydroanthracenones namely 3,4-dihydro-2,6,9-trihydroxy-8-methyl-1(2H)-anthracenone (gasteriacenone A), 3,4-dihydro-2,4,9-trihydroxy-6-methoxy-8-methyl-1(2H)-anthracenone (gasteriacenone B) and 3,4-dihydro-4,6,9-trihydroxy-7-carbomethoxy-8-methyl-1(2H)-anthraceno ne (gasteriacenone C). Their structures were determined by spectroscopic methods including 2D NMR techniques.
authors.affiliation: Department of Chemistry, Addis Ababa University, Ethiopia.
authors.forename: E
authors.initials: E
authors.lastname: Dagne
authors.forename: B E
authors.initials: BE
authors.lastname: Van Wyk
authors.forename: M
authors.initials: M
authors.lastname: Mueller
authors.forename: W
authors.initials: W
authors.lastname: Steglich
mesh_terms: D000818:Animals; D000873:Anthracenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D033364:Decapoda / Q000187:drug effects; D009682:Magnetic Resonance Spectroscopy; D010944:Plants / Q000737:chemistry*; D013055:Spectrophotometry, Infrared
chemical_list: D000873:Anthracenes; C103042:gasteriacenone A; C103048:gasteriacenone B; C103051:gasteriacenone C