From Ilex theezans leaves, a species reported as adulterant of the genuine erva-mate (Ilex paraguariensis St. Hil.), two saponins and one triterpene have been isolated. Their structures were elucidated by mean of spectroscopic methods. The saponins were identified as the 28-O-β-D-glucopyranosylester of rotundic acid (pedunculoside) and the 28-O-β-D-glucopyranosylester of rotundioic acid. The triterpene was identified as rotundic acid.
saponins, Aquifoliaceae, rotundic acid, Ilex theezans, pedunculoside, rotundioic acid
Journal NLM ID: 8711484WWW link: http://www.latamjpharm.org/trabajos/18/1/LAJOP_18_1_1_8_RR5LBM80W1.pdfPublisher: Colegio de Farmaceuticos de la Provincia de Buenos Aires
Correspondence: Schenkel EP
Institutions: Faculdade de Farmácia, UFRGS, Av. Ipiranga, 2752,90610-000 Porto Alegre, RS, Brazil, Laboratoire de Chimie Thérapeutique, URA 1310 du CNRS, Faculté des Sciences Pharmaceutiques et Biologiques, Paris V, France
Methods: 13C NMR, 1H NMR, EI-MS, FAB-MS, TLC, acid hydrolysis, alkaline hydrolysis, optical rotation measurement, acetylation, CIMS