Two new saponins, 2α,3α,19α,23-tetrahydroxyolean-12-en-28-O-β-D-galactoside, and sitosterol α(1→3) diglucoside, were isolated from the stem barks of Pteleopsis hylodendron along with a known triterpenoid, 2α,3β,21β,23-tetrahydroxyolean-12-en-28-oic acid, which was isolated for the first time from this plant. The structures of these compounds were elucidated with the help of spectroscopic studies.
saponins, Pteleopsis hylodendron, Combretaceae
Publication DOI: 10.1016/S0031-9422(99)00250-2Journal NLM ID: 0151434Publisher: Elsevier
Correspondence: Choudhary MI
Institutions: International Center for Chemical Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi 75270, Pakistan, Department of Organic Chemistry, Faculty of Science, University of Yaounde 1, P.O. Box 812, Yaounde, Cameroon
Methods: 13C NMR, 1H NMR, IR, TLC, enzymatic hydrolysis, UV, HMBC, HMQC, DEPT, COSY, HOHAHA, HR-FAB-MS, HCl hydrolysis, HR-EI-MS, VLC
Found