A new tritcrpenoid glycosidc. named dccaisosidq F. has beed isolated IYom Decaisneafargesit its structure was determined on basis of chemical mcthod. FAB-MS. homonuclear andhetcronuclear correlation experiments. including COSY. TOSCY. HMBCand NOESY techniques to be 3-0-6-D- xylopyranosyl (1-3 )-(a-L-rhamllopyranosyl (1-2 )-L-arabinopy ranosyl hedcragenin 28-0-D-xylopyranosyl (1-4)-b-D-glLlcopyranosy (1-6)-D-glucopyranoside,
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