fti-277

FTI-277 hydrochloride (FTI 277 HCl) 是一种法尼基转移酶FTase 抑制剂，高效 Ras CAAX 肽模拟物，可抑制H-Ras 和K-Ras 信号转导，还可抑制hepatitis delta virus 感染。

FTI-277 是一种法尼基转移酶 FTase 抑制剂，也是一种高效 Ras CAAX 肽模拟物。FTI-277 对 H-Ras 和 K-Ras 信号转导具有抑制作用，能够抑制 hepatitis delta virus (HDV) 感染。

FTI 277 TFA is a prodrug form of FTI 276 that inhibits farnesyltransferase (FTase) (IC50 = 0.5 nM). Inhibits H-Ras and K-Ras processing in whole cells (IC50 values are 0.1 and 10μM respectively) and disrupts constitutive H-Ras-specific activation of MAPK. Causes significant antiproliferative effects in human malignant glioma cells and many other tumor cell lines.

BIM-46050 is a potent and specific inhibitor of human farnesyltransferase. BIM-46050 is free acidic form of BIM-46068. The IC50 values for in vitro inhibition of human brain FTase indicate that BIM-46050 and the ester form BIM-46068 are potent inhibitors of farnesyltransferase. Their potencies are in the nanomolar range and compare favorably with the compounds B581, FTI-277 and L745,631. B581 is an analog of the tetrapeptide Cys-Val-Phe-Met obtained by replacement of the amino-terminal amide bonds inhibiting processing of farnesylated proteins specifically. FTI-277 is a methyl ester of FTI-276, reported as a preferential inhibitor of FTase over GGTase I (100-fold). L745,631 is a 2-substituted piperazine reported to be a highly selective inhibitor of FTase over GGTase (2,000-fold). The selectivity of BIM-46050 and BIM-46068 for FTase over GGTase is very similar for both compounds (3,000-fold).