Protection of the indole nucleus of tryptophan in solid-phase peptide synthesis with a dipeptide that can be cleaved rapidly at physiological pH
作者:Marie Danielsson、Karolina Wahlström、Anders Undén
DOI:10.1016/j.tetlet.2011.08.172
日期:2011.11
The synthesis of a new derivative of tryptophan Fmoc-Trp(Boc-Sar-Sar)-OH is described. Fmoc-Trp(Boc-Sar-Sar)-OH is introduced into peptides by solid-phase peptide synthesis and during treatment with TFA at the end of the synthesis, the Boc group is cleaved and the peptide is obtained with the indole nucleus modified with the sarcosinyl–sarcosinyl (Sar-Sar) moiety. This modification will introduce a
描述了色氨酸Fmoc-Trp(Boc-Sar-Sar)-OH的新衍生物的合成。通过固相肽合成法将Fmoc-Trp(Boc-Sar-Sar)-OH引入肽中,并在合成结束时用TFA处理期间,将Boc基团裂解,并用吲哚核修饰的肽获得该肽肌氨酸基–肌氨酸基(Sar-Sar)部分。该修饰将引入阳离子电荷,该阳离子电荷可在HPLC纯化过程中改善肽的溶解度。暴露于生理pH下,Sar-Sar部分被裂解。因此,Boc-Sar-Sar组也可用于设计含吲哚化合物的前药。