Oxidative stress-responsive compounds are attracting significant attention in the field of medicinal chemistry and chemical biology. Here, we disclose the development of a hydrogenperoxide (H2O2)-responsive aminoacid that induces peptide bond cleavage in the presence of H2O2 that closely relates to oxidative stress. The H2O2-responsive aminoacid possessing a boronate or boronic acid moiety was incorporated
氧化应激响应化合物在药物化学和化学生物学领域引起了极大的关注。在这里,我们公开了在与氧化应激密切相关的H 2 O 2存在下诱导肽键断裂的过氧化氢(H 2 O 2)反应性氨基酸的开发。分别使用基于Fmoc的固相肽合成法或稍加修饰的方法,将具有硼酸或硼酸部分的H 2 O 2响应氨基酸掺入肽中,并成功触发了所得肽的肽键裂解通过添加H 2 O 2。
Development of a fluoride-responsive amide bond cleavage device that is potentially applicable to a traceable linker
A fluoride-responsive (FR) amino acid that induces amide bond cleavage upon the addition of a fluoride was developed, and it was applied to an FR traceable linker. By the use of an allcyne-containing peptide as a model of an alkynylated target protein of a bioactive compound, introduction of the FR traceable linker onto the peptide was achieved. Subsequent fluoride-induced cleavage of the linker followed by labeling of the released peptide derivative was also conducted to examine the potential applicability of the FR traceable linker to the enrichment and labeling of allcynylated target molecules. (C) 2014 Elsevier Ltd. All rights reserved.