Five new sesquiterpene polyesters [1, 4, 6, 8, 9] based on the dihydro
-beta-agarofuran skeleton were isolated, together with twelve known co
mpounds of the same type, from the fruits of Euonymus nanus and E, sac
halinensis. The structures were elucidated by spectral methods and com
parison with related compounds. Biological evaluation showed that 1 be
ta,6 alpha,15-triacetoxy-2 beta ,9 alpha-dibenzoyloxydihydro-beta-agar
ofuran [3] and evonine [16] demonstrated insecticidal effects against
Pieris brassicae.