Probing the isoprenylcysteine carboxyl methyltransferase (Icmt) binding pocket: Sulfonamide modified farnesyl cysteine (SMFC) analogs as Icmt inhibitors
摘要:
Human isoprenylcysteine carboxyl methyltransferase (hIcmt) is a promising anticancer target as it is important for the post-translational modification of oncogenic Ras proteins. We herein report the synthesis and biochemical activity of 41 farnesyl-cysteine based analogs versus hIcmt. We have demonstrated that the amide linkage of a hIcmt substrate can be replaced by a sulfonamide bond to achieve hIcmt inhibition. The most potent sulfonamide-modified farnesyl cysteine analog was 6ag with an IC(50) of 8.8 +/- 0.5 mu M for hIcmt. (C) 2011 Elsevier Ltd. All rights reserved.
Probing the isoprenylcysteine carboxyl methyltransferase (Icmt) binding pocket: Sulfonamide modified farnesyl cysteine (SMFC) analogs as Icmt inhibitors
作者:Jaimeen D. Majmudar、Kalub Hahne、Christine A. Hrycyna、Richard A. Gibbs
DOI:10.1016/j.bmcl.2011.01.078
日期:2011.5
Human isoprenylcysteine carboxyl methyltransferase (hIcmt) is a promising anticancer target as it is important for the post-translational modification of oncogenic Ras proteins. We herein report the synthesis and biochemical activity of 41 farnesyl-cysteine based analogs versus hIcmt. We have demonstrated that the amide linkage of a hIcmt substrate can be replaced by a sulfonamide bond to achieve hIcmt inhibition. The most potent sulfonamide-modified farnesyl cysteine analog was 6ag with an IC(50) of 8.8 +/- 0.5 mu M for hIcmt. (C) 2011 Elsevier Ltd. All rights reserved.
Efficient S-alkylation of cysteine in the presence of 1,1,3,3-tetramethylguanidine
The synthesis of S-alkylated cysteinederivatives was carried out successfully in the presence of 1,1,3,3-tetramethylguanidine. Alkylation proceeded in high yields on unprotected amino acids and peptides containing a sulfhydryl group.