Two New Sesquiterpenes from Salvia roborowskii MAXIM

Two new sesquiterpenes, (1 beta,3 beta,4 alpha,5 alpha,6 alpha,8 alpha)-guai-10(14)-ene-3,4,6,8-tetrol 3,6,8-triacetate (1) and (3 beta,4 alpha,6 alpha,8 beta,9 beta,10 alpha)-8-(acetyloxy)-3,4 : 9,10-diepoxygermacr-7(11)-eno-12,6-lactone (2) were isolated from the EtOH extract of Salvia roborowskii MAXIM. Their structures were established by spectroscopic methods, including one- and two-dimensional NMR techniques. and the relative configurations of these compounds were determined oil the basis of NOE experiments.