Pregnane glycosides from Hemidesmus indicus.
Three new pregnane oligoglycosides, medidesmine, hemisine and desmisine isolated from the plant Hemidesmus indicus were identified as sarcostin-3-O-alpha-D-glucopyranosyl (1 --> 4)-O-beta-D-digitoxopyranosyl (1 --> 4)-O-beta-D-oleandropyranoside, calogenin-3-O-beta-D-cymaropyranosyl (1 --> 4)-O[3-O-methyl]beta-D-glucopyranosyl (1 --> 4)-O-beta-D-glucopyranosyl (1 --> 4)-O-beta-D-cymaropyranoside and calogenin-3-O-beta-D-xylopyranosyl (1 --> 4)-O-beta-D-digitoxopyranosyl (1 --> 4)-O-beta-D-xylopyranosyl (1 --> 4)-O-beta-D-digitoxopyranoside, respectively, with the help of FAB-MS, EI-MS, 1H and 13C NMR spectroscopy, along with chemical transformations.
Deepak
D
D
Department of Chemistry, University of Lucknow, India.
Srivastava
S
S
Khare
A
A
D002240:Carbohydrate Sequence; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008969:Molecular Sequence Data; D015394:Molecular Structure; D009844:Oligosaccharides / Q000737:chemistry* / Q000302:isolation & purification; D010946:Plants, Medicinal; D011278:Pregnanes / Q000737:chemistry* / Q000302:isolation & purification; D016339:Spectrometry, Mass, Fast Atom Bombardment
D006027:Glycosides; D009844:Oligosaccharides; D011278:Pregnanes