title: Secondary metabolites from the roots of Astragalus zahlbruckneri.
abstract: Four new phenolic glycosides, beta-apiofuranosyl-(1-->2)-beta-glucopyranosides (1-4), along with the cycloartane triterpenes 20(R),25-epoxy-3beta,6alpha,16beta,24alpha-tetrahydroxycycloartane (5) and 20(R),24(S)-epoxy-3beta,6alpha,25-trihydroxycycloartan-16-one (6) were isolated from roots of Astragalus zahlbruckneri. The structure elucidation of all compounds was based on their (1)H and (13)C NMR spectral data including 1D-TOCSY, DQF-COSY, HSQC, and HMBC experiments.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, TR-06100 Ankara, Turkey. icalis@hacettepe.edu.tr
authors.forename: I
authors.initials: I
authors.lastname: Calis
authors.forename: H A
authors.initials: HA
authors.lastname: Gazar
authors.forename: S
authors.initials: S
authors.lastname: Piacente
authors.forename: C
authors.initials: C
authors.lastname: Pizza
mesh_terms: D027883:Astragalus Plant / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry; D012502:Sapogenins / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D014421:Turkey
chemical_list: C438403:20,24-epoxy-3,6,25-trihydroxycycloartan-16-one; C438404:20,25-epoxy-3,6,16,24-tetrahydroxycycloartane; D006027:Glycosides; D010636:Phenols; D012502:Sapogenins; D014315:Triterpenes; C061014:cycloastragenol