XEROPHENONES-A AND XEROPHENONES-B - NEW ISOPRENYLATED DERIVATIVES OF 11-OXATRICYCLO[4.3.1.1(4,10)]UNDECANE-7,9-DIONE FROM CLUSIA-PORTLANDIANA (GUTTIFERAE)
Ge. Henry et al., XEROPHENONES-A AND XEROPHENONES-B - NEW ISOPRENYLATED DERIVATIVES OF 11-OXATRICYCLO[4.3.1.1(4,10)]UNDECANE-7,9-DIONE FROM CLUSIA-PORTLANDIANA (GUTTIFERAE), Tetrahedron letters, 36(26), 1995, pp. 4575-4578
A tautomeric pair of new isoprenylated benzophenone derivatives incorp
orating a novel oxatricyclic skeleton has been isolated from Clusia po
rtlandiana Howard & Proctor and the structures and relative configurat
ion established by NMR methods.