Triterpenoids from the Flowers of Salvia miltiorrhiza

A phytochemical investigation of the flowers of Salvia miltiorrhiza Bunge led to the isolation of two new oleanane-and ursane-type triterpenoids, (3 alpha)-olean-12-ene-3,23-diol (1) and (3 alpha)-urs-12-ene-3,23-diol (2), as well as of four known triterpenoids. Their structures were elucidated on the basis of spectroscopic evidence, including 1D- and 2D-NMR, HR-MS, and the X-ray analysis, and by comparison with literature data.