A new neo-clerodane glucoside, teulamioside, was isolated from the ace
tone extract of the aerial parts of Teucrium lamiifolium, in addition
to the previously known diterpenes montanin E and teuspinin. The struc
ture of teulamioside -dien-20,12-olid-18beta-yl-beta-D-glucopyranoside
] was established by chemical and spectroscopic means.