Novel tricyclic FPT inhibitors with submicromolar FPT activity are des
cribed. Greatly enhanced FPT activity is realized with phthaloyl deriv
atized amino compound 2k, which showed FPT inhibitory activity of IC50
= 0.66 mu M. Sulfonamides 5g and 50 were also found to be potent FPT
inhibitor. SAR resulting from a variety of tricyclic amino acids and s
ulfonamide derivatives is discussed. Copyright (C) 1996 Elsevier Scien
ce Ltd