The guttiferones, HIV-inhibitory benzophenones from Symuhonia alobulifera, Garcinia livinastonei, Garcinia ovalifolia and Clusia rosea. - Gustafson,K.R.; Blunt,J.W.; Munro,M.H.G.; Fulter,R.W.; Mckee,T.C.; Candellina,J.H.; McMahon,J.B.; Cragg,G.M.; Boyd,M.R. (Tetrahedron, 1992)