Two New Sesquiterpenes from Salvia roborowskii Maxim

Two new sesquiterpenes, (1 β ,3 β ,4 α ,5 α ,6 α ,8 α )‐guai‐10(14)‐ene‐3,4,6,8‐tetrol 3,6,8‐triacetate ( 1 ) and (3 β ,4 α ,6 α ,8 β ,9 β ,10 α )‐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 on the basis of NOE experiments.