Utilization of 3′-carboxy-containing tyrosine derivatives as a new class of phosphotyrosyl mimetics in the preparation of novel non-phosphorylated cyclic peptide inhibitors of the Grb2–SH2 domain
作者:Yan-Li Song、Jinzhi Tan、Xiao-Min Luo、Ya-Qiu Long
DOI:10.1039/b515432d
日期:——
phosphotyrosyl (pTyr) mimetics, distinct from the conventional pTyr mimetic design of adding non-hydrolyzable acidic functionalities to the 4'-position of phenylalanine, was created by introducing carboxy-containing groups to the 3'-position of tyrosine. The effect of the chain length of the carboxy substituent was examined. Reported herein is the chiral pool synthesis of the new pTyr mimetics, and their first
通过将含羧基的基团引入到酪氨酸的3'位上,创建了一类新型的磷酸酪氨酰(pTyr)模拟物,这与传统的pTyr模拟设计不同,后者是将不可水解的酸性官能团添加到苯丙氨酸的4'位上。检查了羧基取代基的链长的影响。本文报道了新的pTyr模拟物的手性库合成,以及它们首次用于具有5个氨基酸序列Xx1-Leu-(3'-取代的-Tyr)-的新型非磷酸化Grb2-SH2结构域结合基序中Ac6c-Asn。含3-L-(2-羧乙基)酪氨酸的亚砜环化肽表现出最高的亲和力,IC50 = 1.1 microM,为进一步开发有效的Grb2-SH2结构域抑制剂提供了有希望的新模板,具有降低的电荷和肽性