title: Triumfettoside, a new alkaloidal steroid glycoside and triumfettosterol, a new sterol from Triumfetta flavescens.
abstract: The aerial parts of Triumfetta flavescens H. (N. O. Tiliaceae) afforded a new alkaloidal steroid glycoside, characterized as stigma 5(6)-ene-7,22-dione-25-methylamino-3 beta,23 beta-diol-3-O-beta-D- glucoside and designated as triumfettoside (1); and a new sterol identified as stigma 5(6)-ene-7,22-dione-3 beta,23 beta-diol, designated as triumfettosterol (2). Their structures were elucidated on the basis of chemical and spectral analysis.
authors.affiliation: Medicinical, Aromatic and Poisonous Plants Research Centre, Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia. drbahmed@rediffmail.com
authors.forename: B
authors.initials: B
authors.lastname: Ahmed
authors.forename: M A
authors.initials: MA
authors.lastname: al-Yahya
authors.forename: A J
authors.initials: AJ
authors.lastname: al-Rehaily
mesh_terms: D002855:Chromatography, Thin Layer; D009682:Magnetic Resonance Spectroscopy; D012529:Saudi Arabia; D013055:Spectrophotometry, Infrared; D013256:Steroids / Q000737:chemistry* / Q000302:isolation & purification; D013261:Sterols / Q000737:chemistry* / Q000302:isolation & purification; D032385:Triumfetta / Q000737:chemistry*
chemical_list: D013256:Steroids; D013261:Sterols; C468966:triumfettoside; C468967:triumfettosterol