FTI 277 HCl is the methyl ester of FTI 277, which is a potent and selective farnesyltransferase (FTase) inhibitor with IC50 of 500 pM, about 100-fold selectivity over the closely related GGTase I.
Zaragozic acid B, a fungal metabolite, is a potent inhibitor of both farnesyl-protein transferase (FPTase) and squalene synthases. Zaragozic acid B is a potential anticancer drug.