IRIDOID GLUCOSIDES IN PLANTAGO-ALPINA AND PLANTAGO-ALTISSIMA

Two species of Plantago, namely P. Alpina and P. altissima were invest igated. From the former, nine iridoid glucosides and verbascoside were isolated. Together with the known iridoids gardoside, geniposidic aci d, 8-epi-loganic acid, mussaenosidic acid, aucubin, monomelittoside an d melittoside, two new glucosides were found: 10-O-acetylgeniposidic a cid and alpinoside, another compound with a 10-O-acetyl group. From P. altissima verbascoside and isoverbascoside were isolated together wit h the known iridoids gardoside, 8-epi-loganic acid, catalpol, aucubin, and hookerioside as well as the new compound desacetylhookerioside.