The present invention comprises analogs of the CAAX motif of the protein Ras that is modified by farnesylation in vivo. These CAAX analogs inhibit the farnesylation of Ras. Furthermore, these CAAX analogues differ from those previously described as inhibitors of Ras farnesyl transferase in that they do not have a thiol moiety. The lack of the thiol offers unique advantages in terms of improved pharmacokinetic behavior in animals, prevention of thiol-dependent chemical reactions, such as rapid autoxidation and disulfide formation with endogenous thiols, and reduced systemic toxicity. Further contained in this invention are chemotherapeutic compositions containing these farnesyl transferase inhibitors and methods for their production.
[EN] INHIBITORS OF FARNESYL-PROTEIN TRANSFERASE<br/>[FR] INHIBITEURS DE FARNESYLE-PROTEINE TRANSFERASE
申请人:MERCK & CO., INC.
公开号:WO1996009836A1
公开(公告)日:1996-04-04
(EN) The present invention comprises analogs of the CAAX motif of the protein Ras that is modified by farnesylation $i(in vivo). These CAAX analogs inhibit the farnesylation of Ras. Furthermore, these CAAX analogs differ from those previously described as inhibitors of Ras farnesyl transferase in that they do not have a thiol moiety. The lack of the thiol offers unique advantages in terms of improved pharmacokinetic behavior in animals, prevention of thiol-dependent chemical reactions, such as rapid autoxidation and disulfide formation with endogenous thiols, and reduced systemic toxicity. Further contained in this invention are chemotherapeutic compositions containing these farnesyl transferase inhibitors and methods for their production.(FR) La présente invention se rapporte à des analogues du motif CAAX de la protéine Ras qui est modifiée par farnésylation $i(in vivo). Ces analogues de CAAX inhibent la farnésylation de Ras. De plus, ils diffèrent des autres analogues précédemment décrits comme étant des inhibiteurs de Ras-farnésyle transférase en ce qu'ils ne possèdent pas une fraction thiol. L'absence de thiol offre des avantages uniques sur le plan du comportement pharmacocinétique amélioré chez les animaux, de la prévention des réactions chimiques dépendant de thiol, telle que l'auto-oxydation rapide et la formation de bisulfure avec des thiols endogènes, et de la toxicité systémique réduite. L'invention se rapporte en outre à des compositions chimiothérapiques contenant ces inhibiteurs de farnésyle transférase et à leurs procédés de production.