Diterpene quinones from the roots of salvia lanigera poir

ABSTRACT

Fractionation of the antimicrobial petr. extract of Salvia lanigera Poir. roots, afforded two more diterpene quinones deoxyneocryptotanshinone I and 7-oxoroyleanone II. Their structures were elucidated using 400 MHz 1H-NMR and other spectroscopic evidences