title: Resin glycosides. XIX. Woodrosins I and II, ether-insoluble resin glycosides from the stems of Ipomoea tuberosa.
abstract: Two new ether-insoluble resin glycosides named woodrosins I and II were isolated from the stems of Ipomoea tuberosa L., and their structures were determined on the basis of chemical and spectral data. Contrary to anticipation, they had an intramolecular cyclic ester structure similar to that of ether-soluble resin glycosides (Mayer's jalapin) hitherto isolated. It is proposed to use the terms, "jalapin" and "convolvulin," not according to the solubility in ether (Mayer's classification), but according to the structure, i.e., intramolecular esters and others, respectively.
authors.affiliation: Faculty of Pharmaceutical Sciences, Setsunan University, Osaka, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ono
authors.forename: K
authors.initials: K
authors.lastname: Nakagawa
authors.forename: T
authors.initials: T
authors.lastname: Kawasaki
authors.forename: K
authors.initials: K
authors.lastname: Miyahara
mesh_terms: D002240:Carbohydrate Sequence; D005227:Fatty Acids; D005960:Glucosides / Q000737:chemistry* / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D008969:Molecular Sequence Data; D009844:Oligosaccharides / Q000737:chemistry* / Q000302:isolation & purification*; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D012116:Resins, Plant / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D005227:Fatty Acids; D005960:Glucosides; D006027:Glycosides; D009844:Oligosaccharides; D010936:Plant Extracts; D012116:Resins, Plant; C085563:woodrosin I; C085564:woodrosin II