Three new cardiac glycosides were isolated along with two known carden
olides from the seeds of Erysimum cheiranthoides. The new ones were ch
aracterized by spectral methods as 16 beta-hydroxystrophanthidin (stro
phadogenin) 3-O-beta-glucopyranosyl-(1 --> 4)-beta-boiviopyranoside, s
trophadogenin 3-O-alpha-rhamnopyranosyl-(1 --> 4)-beta-digitoxopyranos
ide and strophanthidin 3-O-alpha-rhamnopyranosyl-(1 --> 4)-beta-digito
xopyranoside, named cheiranthosides I, II and III, respectively.