Peucenin 7-methyl ether 1, O-methylalloptaeroxylin 2 and perforatic ac
id 3 were isolated from the branches of Harrisonia perforata (Blanco.)
Merr. (Simaroubaceae). The structures of 1-3 were assigned on the bas
is of their spectroscopic data and also by a chemical conversion in th
e case of 3.