Triterpenoids from the roots of Rubus parvifolius

摘要

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