title: Two bioactive saponins from Albizia subdimidiata from the Suriname rainforest.
abstract: Bioassay-guided fractionation of a methanol extract of Albizia subdimidiata using the engineered yeast strains 1138, 1140, 1353, and Sc7 of Saccharomyces cerevisiae as the bioassay tool resulted in the isolation of the two active saponins 1 and 2; one of these, albiziatrioside A (1), is described for the first time. The structures of 1 and 2 were established on the basis of HRMS, 1D and 2D NMR spectral data, and GC--MS analysis of the sugar units. Both isolated compounds showed significant cytotoxicity against the A2780 cell line.
authors.affiliation: Department of Chemistry, M/C 0212, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA.
authors.forename: M
authors.initials: M
authors.lastname: Abdel-Kader
authors.forename: J
authors.initials: J
authors.lastname: Hoch
authors.forename: J M
authors.initials: JM
authors.lastname: Berger
authors.forename: R
authors.initials: R
authors.lastname: Evans
authors.forename: J S
authors.initials: JS
authors.lastname: Miller
authors.forename: J H
authors.initials: JH
authors.lastname: Wisse
authors.forename: S W
authors.initials: SW
authors.lastname: Mamber
authors.forename: J M
authors.initials: JM
authors.lastname: Dalton
authors.forename: D G
authors.initials: DG
authors.lastname: Kingston
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D019685:Rosales / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013532:Suriname
chemical_list: D012503:Saponins