Two new triterpenoid saponins, beciumecine 1 and 2, were isolated from the root bark of Becium grandiflorum var. obovatum and their structures established as 3-O-(beta-D-glucopyranosyl) terminolic acid 28-O-beta-D-apiofuranosyl(1-3)-[alpha-L-rhamnopy-anosyl (1-3)-beta-D-xylopyranosyl(1-4)]-alpha-L-rhamnopyranosyl (1-2)-alpha-L-arabinopyranoside and 3-O-(beta-D-glucopyranosyl) 24-hydroxyterminolic acid 28-O-alpha-L-rhamnopyranosyl(1-3)-beta-D-xylopyranosyl(1-4)-alpha-L- rhamnopyranosyl(1-2)-alpha-L-arabinopyranoside, respectively.
triterpenoid saponins, Lamiaceae, Becium grandiflorum var. obovatum
NCBI PubMed ID: 9883595Publication DOI: 10.1016/s0031-9422(98)00413-0Journal NLM ID: 0151434Publisher: Elsevier
Institutions: Laboratory for Ecological Chemistry, University of Stellenbosch, Stellenbosch, South Africa, Department of Pharmacology, Medical School, University of Stellenbosch, Tygerberg, South Africa, Varian NMR Applications Laboratory, Darmstadt, Germany
Methods: 13C NMR, 1H NMR, GC-MS, optical rotation measurement, TOCSY, CC, HMBC, DEPT, LC, COSY, NOESY, HSQC, extraciton, HSQC-TOCSY, TOF-MALDI
Found