title: Glycoside esters from lichens of central Asia.
abstract: Ten compounds isolated from the extract of the central Asian lichens comprised new glycosides and glycoside esters having 18R-hydroxy-dihydroalloprotolichesterinic, 18S-hydroxy-dihydroprotolichesterinic and 18S-hydroxy-neodihydroprotolichesterinic acids, as the aglycones and a saccharide moiety linked at C-18 and also at C-21 made by glucose, xylose or rhamnose. The structures were elucidated using extensive spectroscopic analysis (1D and 2D NMR, MS, IR, UV and ORD) and by biochemical methods.
authors.affiliation: Institute of Microbiology, Vídenská 1083, 14220, Prague, Czech Republic. rezanka@biomed.cas.cz
authors.forename: T
authors.initials: T
authors.lastname: Rezanka
authors.forename: I A
authors.initials: IA
authors.lastname: Guschina
mesh_terms: D004952:Esters / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D008011:Lichens / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D013057:Spectrum Analysis
chemical_list: D004952:Esters; D006027:Glycosides; D010936:Plant Extracts