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From the roots of Rubus parvifolius L., four triterpenoidal sapogenins, ursolic acid 1, 2alpha-hydroxyursolic acid 2, euscapic acid 3, 2alpha, 3beta, 19alpha-trihydroxyurs-12-en-23,28-dioic acid 4 and one triterpenoidal glycoside, suavissimoside R1 5, were isolated. The structures were elucidated by spectroscopic methods and chemical transformations. Corn pound 4 was first isolated as free form.
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