Structures of merremosides B and D, new antiserotoinc resin-glycosides from the tuber of Merremia mammosa, an indonesian folk medicine.

Abstract
Six new resin-glycosides (merremoside) were isolated from an Indonesian folk medicine ("Bidara upas"), the tuber of Merremia mammosa (Convolvulaceae), and the structures of two antiserotonic glycosides, named merremosides b (1) and d (2), have been determined on the basis of chemical and physicochemical evidence.