Structural revision of clusianone and 7-epi-clusianone and anti-HIV activity of polyisoprenylated benzophenones - Piccinelli, A L; Cuesta-Rubio, O; Chica, M B; Mahmood, N; Pagano, B; Pavone, M; Barone, V; Rastrelli, L (Tetrahedron, 2005)