A nine-step (!) solid-phase synthesis and subsequent cleavage with cyclization from the polymeric support were the keys to preparing high-quality molecular libraries of thiazolylhydantoines 1 from modified amino acid building blocks. Each step in the synthesis is different. Because the final cyclization cleaves only molecules that have been successfully constructed, the products obtained are pure. R1 , R2 =alkyl; R3 =aryl, arylO; R4 =allyl.
Structure–activity relationship study of novel tissue transglutaminase inhibitors
作者:Eric Duval、April Case、Ross L. Stein、Gregory D. Cuny
DOI:10.1016/j.bmcl.2005.02.005
日期:2005.4
Thieno[2,3-d]pyrimidin-4-one acylhydrazide derivatives were discovered as moderately potent inhibitors of TGase 2 (tissue transglutaminase) utilizing a fluorescence-based assay that measured TGase 2 catalyzed incorporation of the dansylated Lys derivative alpha-N-Boc-Lys-CH2-CH2-dansyl into the protein substrate N,N-dimethylated-casein. A SAR study revealed that the acylhydrazide thioether side-chain and the thiophene ring were critical to inhibitory activity. (c) 2005 Elsevier Ltd. All rights reserved.