Solid-Phase and Solution-Phase Syntheses of Oligomeric Guanidines Bearing Peptide Side Chains
摘要:
Synthetic strategies for preparing N,N'-bridged oligomeric guanidines bearing peptide side chains both on solid support and in solution are presented. Monomers are prepared from common a-amino acids and therefore contain conventionally protected peptide side chains. The side chains include alkyl, aromatic, hydroxyl, amino, carboxylic acid, and amide functional groups. Oligomer elongation utilizes acid-sensitive sulfonyl activated thiourea through the formation of carbodiimide intermediate. With proper preparation of monomers, synthesis of oligomer can be performed in two directions (equivalent to N to C terminal or C to N terminal in a peptide sequence) with excellent efficiency.
Fast and Facile Synthesis of 4-Nitrophenyl 2-Azidoethylcarbamate Derivatives from <i>N</i>-Fmoc-Protected α-Amino Acids as Activated Building Blocks for Urea Moiety-Containing Compound Library
A fast and facilesynthesis of a series of 4-nitrophenyl 2-azidoethylcarbamate derivatives as activated urea building blocks was developed. The N-Fmoc-protected 2-aminoethyl mesylates derived from various commercially available N-Fmoc-protected α-amino acids, including those having functionalized side chains with acid-labile protective groups, were directly transformed into 4-nitrophenyl 2-azidoethylcarbamate
Solid-Phase Synthesis of Azidomethylene Inhibitors Targeting Cysteine Proteases
作者:Peng-Yu Yang、Hao Wu、Mei Yin Lee、Ashley Xu、Rajavel Srinivasan、Shao Q. Yao
DOI:10.1021/ol800575z
日期:2008.5.1
An efficient strategy for the solid-phase synthesis of azidomethylene inhibitors targeting cysteine proteases is described. The method is highlighted by its compatibility with readily available building blocks, as well as its ability to accommodate different functional groups. A 249-member library has thus far been successfully synthesized, characterized, and screened against Caspase-1, -3 and -7.