Clerodane and ent-kaurane diterpene glycosyl and glycoside derivatives from the leaves of Casearia sylvestris

Abstract

Five new clerodane diterpene glycosyl derivatives, caseariasides A-E (1-5, resp.) and three new ent-kaurane diterpene glucosides, sylvestrisides C-E (6-8, resp.) were isolated from the leaves of Casearia sylvestris. Their structures were determined on the basis of chemical and spectroscopic analyses. © 2009 Verlag Helvetica Chimica Acta AG.