Composite Constituents : Three New Triterpene Triols Isolated from Fresh Roots of Picris hieracioides subsp. japonica

Three new triterpenoids, olean-12-ene-2β, 3β, 22α-triol (1), urs-12-ene-2β, 3β, 22α-triol (2), urs-12-ene-2β, 3β, 28-triol (3), and a known one, olean-12-ene-2β, 3β, 28-triol (4), were isolated from the fresh roots of Picris hieracioides subsp. japonica, and their structures were elucidated on the basis of spectral data.