From the roots of Lactuca tatarica, one new and two known guaianolides
were isolated together with five known guaianolide glycosides, three
known germacrolide glycosides and benzyl-beta-glucopyranoside. The str
ucture of the new compound was elucidated as 11(beta)H, 13-dihydrolact
ucin-8-O-p-methoxyphenylacetate by spectral methods. (C) 1997 Elsevier
Science Ltd.