T. Berg, Søren Damtoft, S. Jensen
1985
Citations
2
Influential Citations
20
Citations
Journal
Phytochemistry
Abstract
Pedicularis palustris contains the iridoid glucosides aucubin and gardoside methyl ester, and five hydroxy derivatives of S-epi-deoxyloganin, together with boschnaloside and three hydroxy derivatives of boschnaloside. From P. siloutica, plantarenaloside, g-epiloganin and euphroside have been isolated. Euphroside is also present in P. lapponica, in addition to aucubin and mussaenoside. Chemical evidence for the structure of euphroside is presented. Pedicularioside is shown to be identical with penstemoside, and the former name is thus redundant. The presence of iridold glucosides in the genus Pedicularis has previously been demonstrated by paper chromato- graphy (l). Aucubin (1) was found in all four species investigated, catalpol in three, and an iridoid ester in one. As an extension of this study, we have surveyed the presence of iridoids in three species of Pedicularis and identified altogether eleven iridoids. The isolation and characterization of these are presented m the following.