title: Pregnane and pregnane tetraglycoside from Marsdenia roylei.
abstract: Pregnane oligoglycoside, namely roylinine, and a pregnane derivative, namely marsgenin, have been isolated from chloroform-soluble extract of dried stem of Marsdenia roylei, and their structures were determined using ¹H-NMR, ¹³C-NMR, ¹H-¹H COSY, HSQC, TOCSY and FABMS spectral techniques as well as chemical degradation and derivatisation.
authors.affiliation: Department of Chemistry, Lucknow University, Lucknow 226007, India.
authors.forename: Versha
authors.initials: V
authors.lastname: Gupta
authors.forename: Alok
authors.initials: A
authors.lastname: Kumar
authors.forename: Anakshi
authors.initials: A
authors.lastname: Khare
authors.forename: Naveen K
authors.initials: NK
authors.lastname: Khare
mesh_terms: D002855:Chromatography, Thin Layer; D006027:Glycosides / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D031101:Marsdenia / Q000737:chemistry*; D011278:Pregnanes / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D006027:Glycosides; D011278:Pregnanes