NEW ELLAGIC GLYCOSIDES AND KNOWN TRITERPENOIDS FROM DUCHESNEA INDICA FOCKE

Two new ellagic glycosides,named ducheside A and ducheside B,have beenisolated from Ducheside indica Focke.Their structures were established as 3'-O-methyl-ellagic acid-4-O-β-D-xylopyranoside(Ⅰ),3'-O-methyl-ellagic acid-4-O-α-L-arabinofuranoside(Ⅱ),respec-tively,on the basis of chemical method and spectral analysis.In addition,four known compoundswere isolated and identified as 3β-hydroxylurs-12-en-28-oic acid(Ⅲ),2α,3β,19α-trihydroxylurs-12-en-28-oic acid(Ⅳ),2α,3β,19α-trihydroxylurs-12-en-28-oic acid-28-O-β-D-glucopyranoside(Ⅴ),2α,3α,19α-trihydroxylurs-12-en-28-oic acid-28-O-β-D-glucopyranoside(Ⅵ).CompoundsⅣ,Ⅴ,Ⅵ were isolated for the first time from Duchesnea genus.