| abstract |
10,11-Methanodibenzosuberane derivatives, i.e., the compounds of Formula I: <IMAGE> Formula I wherein: A is -CH2-CH2-, -CH2-CHRa-CH2-, or -CH2-CHRa-CHRb-CH2-, where one of Ra or Rb is H, OH, or lower acyloxy, and the other is H; R1 is H, F, Cl or Br; R2 is H, F, Cl or Br; and R3 is heteroaryl or phenyl optionally substituted with F, Cl, Br, CF3, CN, NO2 or OCHF2; and the pharmaceutically acceptable salts thereof, are useful chemosensitizing agents, e.g., for cancer chemotherapy, particularly for treating multidrug resistance. |