Tanshinlactone, a novel seco-abietanoid from Salvia miltiorrhiza.

Abstract

Further study on the constituents of Salvia miltiorrhiza BUNGE (Labiatae) afforded a novel seco-abietanoid named tanshinlactone. The structure of tanshinlactone was characterized on the basis of spectral data. The biogeneses of tanshinlactone and a related compound are discussed.