The floral resins of five species of Clusia belonging to two taxonomic
sections of the genus wee investigated These resins are used by polli
nating bees for nest construction. The major components of these resin
s are polyisoprenylated benzophenones, a class of biologically active
compounds. We found clusianone and three hitherto unknown compounds, g
randone, nemorosone and hydroxy-nemorosone. Copyright (C) 1996 Elsevie
r Science Ltd