Abstract: Three lithospermic acid B easter dervatives,dimethl lithospermate B, 9"-methl lithospermate B and 9'"-methyl lithospermate B together with nin known polyphenol compounds:protocatechualdehyde,protocatechui acid,caddeic acid R-(+)-β-D-(3,4-dihydroxyphenyl)-lactic acid,rosmarinic acid,methyl rosmarinate,lithospermic acid and lithospermic acid B were isolated from the dried roots of Salvia przewalskii.

Key words: Salvia, S.przewalskii, Polyhenols