Examination of Phosphoryl-Mimicking Functionalities within a Macrocyclic Grb2 SH2 Domain-Binding Platform
作者:Sang-Uk Kang、Zhen-Dan Shi、Karen M. Worthy、Lakshman K. Bindu、Pathirage G. Dharmawardana、Sarah J. Choyke、Donald P. Bottaro、Robert J. Fisher、Terrence R. Burke
DOI:10.1021/jm050059m
日期:2005.6.1
Reported herein are the design, synthesis, and Grb2 SH2 domain-binding affinities of several phosphoryl-mimicking groups displayed within the context of a conformationally constrained macrocyclic platform. With use of surface plasmon resonance techniques, single-digit nanomolar affinities were exhibited by phosphonic acid and malonyl-containing diacidic phosphoryl mimetics (for 4h and 4g, K-D = 1.47 and 3.62 nM, respectively). Analogues containing monoacidic phosphoryl mimetics provided affinities of K-D = 16-67 nM. Neutral phosphoryl-mimicking groups did not show appreciable binding.