title: Cardenolide and oxypregnane glycosides from the root of Asclepias incarnata L.
abstract: Twenty-nine new oxypregnane glycosides were obtained along with two known cardenolides, frugoside and gofruside, and three known 12-O-acylated pregnane glycosides from the roots of Asclepias incarnata L. (Asclepiadaceae). By detailed studies of the 1H- and 13C-NMR spectra, the structures were determined to be tri- to penta glycosides of isolineolon, 12-O-acetyllineolon, ikemagenin, 12-O-benzoylisolineolon, and two new 12-O-acylated pregnanes.
authors.affiliation: Institute for Environmental Sciences, University of Shizuoka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Warashina
authors.forename: T
authors.initials: T
authors.lastname: Noro
mesh_terms: D002298:Cardenolides / Q000737:chemistry* / Q000302:isolation & purification*; D002301:Cardiac Glycosides / Q000737:chemistry; D004073:Digitoxigenin / Q000031:analogs & derivatives / Q000737:chemistry; D006027:Glycosides; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D008956:Models, Chemical; D018517:Plant Roots / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D002298:Cardenolides; D002301:Cardiac Glycosides; D006027:Glycosides; D012503:Saponins; D004073:Digitoxigenin; C025778:cannogenol-3-O-beta-D-allomethyloside