Lei Z H, Yahara S, Nohara T, Shan T B, Xiong J Z
Faculty of Pharmaceutical Sciences, Kumamoto University, Japan.
Phytochemistry. 1996 Mar;41(4):1187-9. doi: 10.1016/0031-9422(95)00764-4.
Three new cardiac glycosides were isolated along with two known cardenolides from the seeds of Erysimum cheiranthoides. The new ones were characterized by spectral methods as 16 beta-hydroxystrophanthidin (strophadogenin) 3-O-beta-glucopyranosyl-(1-->4)-beta-boiviopyranoside, strophadogenin 3-O-alpha-rhamnopyranosyl-(1-->4)-beta-digitoxopyranoside and strophanthidin 3-O-alpha-rhamnopyranosyl-(1-->4)-beta-digitoxopyranoside, named cheiranthosides I, II and III, respectively.