A New Oleanane Triterpenoid Saponin from Dimocarpus longan

A new oleanane triterpenoid saponin was isolated from the seeds ofDimocarpus longan Lour. The structure of this compound was elucidated as 3-O-β-D-xylopyranosyl-(1 →3)-α-L-rhamnopyranosyl-(1 →2)-β-D-xylopyranosyloleanolic acid 28-O-β-D-xylopyranosyl-(1 →2)-β-D-glucopyranosyl ester (1), named longanoside C. The structure was determined by means of HR-ESI-MS in positive mode and extensive 1D and 2D NMR spectroscopic studies.

Source: Chemistry of Natural Compounds - March 25, 2024 Category: Chemistry Source Type: research