摘要:
Two orthogonally protected SAA building blocks were used in the synthesis of eight novel analogues of the CaaX motif present in the natural substrates of protein:geranylgeranyltransferase I (PGGT 1), an enzyme involved in the post-translation at modification of oncogenic proteins, e.g., Ras K-4B. Remarkably, two compounds, which are stereochemically different at the C(F) position of the SAA residue and at C(2) of the Cys residue, showed comparable activity in a PGGT-1 assay. Our results indicate that both (1,5-cis) and (1,5-trans) SAA building blocks can be used for the development of novel PGGT I inhibitors.