Abstract
Minor monodesmoside triterpene glycosides St-A, St-B, St-C 1 , St-D 1 , St-C 2 , and St-D 2 were isolated from stem bark ofTetrapanax papyriferumC. Koch (Araliaceae). The structures of oleanolic and echinocystic acid 3-O-α-L-arabinopyranosides, oleanolic and echinocystic acid 3-O-β-D-glucopyranosyl-(1→3)-O-α-L-arabinopyranosides, and oleanolic and echinocystic acid 3-O-β-D-galactopyranosyl-(1→2)-O-α-L-arabinopyranosides, respectively, were proposed. Glycosides St-C 2 , St-D 1 , and St-D 2 are new triterpene glycosides. The structures of the isolated compounds were established using chemical methods and NMR spectroscopy.
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