From dry leaves of Aegle marmelos, four new alkaloids, N-2-[4-(3′, 3′-dimethylallyloxy)phenyl]ethyl cinnamide, N-2-hydroxy-2-[4-(3′,3′-dimethylallyloxy)phenyl]ethyl cinnamide, N-4-methoxystyryl cinnamide and N-2-hydroxy-2-(4-hydroxyphenyl)ethyl cinnamide were isolated and characterized. Also isolated were aegeline and a purple compound whose structure has not yet been established. © 1983.