Small Molecules as Structural and Functional Mimics of Sialyl Lewis X Tetrasaccharide in Selectin Inhibition: A Remarkable Enhancement of Inhibition by Additional Negative Charge and/or Hydrophobic Group
作者:Chi-Huey Wong、Francisco Moris-Varas、Shang-Cheng Hung、Thomas G. Marron、Chun-Cheng Lin、Ke Wei Gong、Gabriele Weitz-Schmidt
DOI:10.1021/ja970920q
日期:1997.9.1
Several sialyl Lewis X (SLex) mimics that contain the essential functional groups for receptor interaction and a negative charge or a hydrophobic group have been developed as inhibitors of E-, P-, and L-selectins. Some of the mimics exhibit selectin inhibition activities 103−104-fold more potent than does the natural ligand tetrasaccharide, with IC50 in the low micromolar to high nanomolar range. The
几种唾液酸路易斯 X (SLex) 模拟物包含受体相互作用的基本官能团和负电荷或疏水基团,已被开发为 E-、P- 和 L-选择素的抑制剂。一些模拟物表现出比天然配体四糖强 103-104 倍的选择素抑制活性,IC50 在低微摩尔至高纳摩尔范围内。这些模拟物的合成相对简单,使用 TMSOTf-Ac2O 介导的 C-糖基化,同时选择性去保护初级苄基和酶促醛醇加成反应作为关键步骤。