New Diterpenoids from the Aerial Parts of Salvia pilifera

摘要

Three new diterpenoids.piliferol(2alpha,20-dihydroxy-12-oxo-abieta-9(11),13-dien-8,20-ether)(1).salvip-iliferol(2alpha,10beta-dihydroxy-12-oxo-norabieta-9(11),13-dien)(2).and piliferalactone(2alpha,8-dihydroxy-12-oxo-abieta-9(11),13-dien-20-oic acid-8.20-lactone)(3).together with 7 known compounds,ursolic acid,oleanolic acid,betulinic acid,alpha-amyrin,lupeol,beta-sitosterol,and pectolinarigenin,have been isolated from the aerial parts of an endemic Salvia species,S.pilifera.Their structures were elucidated by spectral(UV.IR,1D-,and 2D-NMR,and HRMS)methods.