Indole alkaloids from the fruits of Alstonia scholaris

Abstract

Phytochemical study of the fruits of Alstonia scholaris (L.) R. Br. led to the isolation of six compounds. These compounds are four indole alkaloids picrinine, 19-E-akuammidine, 19,20-E-vallesamine and 19S-scholaricine and two esters which are dibutyl phthalate and methyl ferulate. The structures of all of these isolates were determined by extensive spectroscopic studies, including comparison of their UV, IR, MS and NMR properties with previously reported data.