Three hydroxymethylanthraquinone glycosides, in addition to the known compounds alizarin, lucidin-omega-ethyl ether, lucidin primeveroside and the iridoid asperuloside were isolated from the dried roots of Rubia tinctorum. The first three compounds were isolated for the first time from this species. The structures were established as 1-hydroxy-2-hydroxymethylanthraquinone 3-glucoside, 2-hydroxymethylanthraquinone 3-glucoside and 3,8-dihdroxy-2-hydroxymethylanthraquinone 3-glucoside.
spectroscopic analysis, anthraquinones, anthraquinone glycosides, Rubiaceae, Iridoids, Rubia tinctorium
Publication DOI: 10.1016/S0031-9422(97)01121-7Journal NLM ID: 0151434Publisher: Elsevier
Institutions: Pharmacognosy Department, Faculty of Pharmacy, Assiut University, Assiut, Egypt
Methods: 13C NMR, 1H NMR, IR, MS, UV, extraction, CC
Found