Abstract:
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.