Sapogenins from the stem and tuber of Entada parvifolia Merr. (Fam. Leguminosae)
The alcoholic extracts of the tuber and stem of Entada parvifolia Merr. upon purification and hydrolysis with dilute HCI gave two major acid sapogenins which were identified as oleanolic acid (m.p. 281-286℃, decomp. ; [∝]30/D +77° (c=1, MeOH), and 21 ∝-hydroxyoleanolic acid (m.p. 268-270℃, decomp.;...
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