Bufadienolides from the southern African Drimia depressa (Hyacinthaceae: Urgineoideae)

Bufadienolides from the southern African Drimia depressa (Hyacinthaceae: Urgineoideae) Bufadienolides from Drimia robusta and Urginea epigea (Hyacinthaceae) Bufadienolides from Drimia macrocentra and Urginea riparia (Hyacinthaceae: Urgineoideae) A novel homoisoflavonoid from Drimia delagoensis (Urgineoideae: Hyacinthaceae) Bufadienolides from Urginea maritima from Egypt Eudesmane-type sesquiterpenoids from Urginea epigea (Urgineoideae; Hyacinthaceae) Bufadienolide glycosides of the Crassulaceae. Structure and stereochemistry of orbicusides A—C, novel toxic metabolites of Cotyledon orbiculata Xanthones from <i>Drimiopsis </i><i>m</i><i>aculata</i> Cytotoxic Bufadienolides from the Leaves of <i>Melianthus major</i> Bufadienolide and Spirostanol Glycosides from the Rhizomes of <i>Helleborus </i><i>o</i><i>rientalis</i>