Four new indole alkaloids, 10-methoxydeplancheine, 10,11-dimethoxy-1-methyl-deacetyl picraline benzoate, 10,11-dimethoxy-1-methyl-deacetyl picraline 3′,4′,5′-trimethoxybenzoate and 10,11-dimethoxy-1-methyl-deacetyl picraline were isolated from the leaves of Alstonia lanceolifera. © 1981.