The roots of Lavandula stoechas ssp. stoechas afforded eleven known triterp
enes, two steroids and two aromatics, in addition to two new triterpenes, 1
8-hydroxy-27-norolean-12,14-dien-30-al-28-oic acid and 3 beta -Iiydroxy-1-o
xo-olean-12-ene-30-al-28-oic acid. Their structures were determined by spec
troscopic analyses. The chloroform extract and some isolated compounds were
evaluated for their growth inhibitory activity against several mammalian c
ell lines.