GUAIANOLIDE α-ARABINOPYRANOSIDES FROM HELENIUM AMARUM

Article abstract of DOI:10.1016/S0031-9422(00)81123-1

Key Word Index - Helenium amarum; Compositae; sesquiterpene lactones; pseudoguaianolides; guaianolide-α-arabinopyranosides; sesquiterpenes;seco-caryophyllenes; phenylpropane derivatives. - The aerial parts of Helenium amarum afforded, in addition to compounds reported previously, several known sesquiterpene lactones as well as some new ones, two pseudoguaianolides and a complex mixture of guaianolide α-arabinopyranosides, which differed in the position of the double bond, the configuration at C-8 and the position of an acetate group in the sugar moiety.Furthermoreseco-caryophyllenes and phenylpropane derivatives were isolated.The structures were elucidated by spectroscopic methods and few chemical transformations.