Triterpenoids from the roots of Rubus parvifolius

Two new oleanane-type triterpenoids, parvifolactone A (1) and rubuside P (2), together with 11 known triterpenoids, fupenzic acid (3), 18,19-seco,2,3-dihydroxyl-19-oxo-urs-11,13(18)-dien-28-oic acid (4), euscaphic acid (5), maslinic acid (6), 1-hydroxyeuscaphic acid (7), 2,3,19,23-tetrahydroxyolean-12-en-28-oic acid (8), 2,3,19,23-tetrahydroxyurs-12-en-28-oic acid (9), glucosyl pinfaensate (10), rubuside J (11), 2,3,19,23-tetrahydroxyurs-12-en-24,28-dioic acid (12), and 2,3,19-trihydroxyurs-12-en-23,28-dioic acid (13), were isolated from the roots of Rubus parvifolius.