Alkaloids from Cyrtanthus elatus

Abstract The alcoholic extract of the fresh bulbs of Cyrtanthus elatus yielded zephyranthine (1) and 1,2- O -diacetylzephyranthine (2) , together with three other known alkaloids. Complete assignment of 1 H and 13 C NMR spectra of compounds 1 and 2 was done by employment of two-dimensional NMR techniques.