Abstract
The new monoterpenoid coumarins, pituranthoside [(-)-S-trans-marmin-7'-O-beta-D-glucopyranoside] and(-)-S-trans-marmin, as well as four known coumarins, xanthotoxol, umbelliferone, isopimpinellin and bergapten, were isolated from the shoots of Pituranthos triradiatus and spectroscopically characterized.