设计并合成了用于E-选择素拮抗剂的新型N-乙酰基-D-葡萄糖胺(Glc N Ac)模拟物。该模拟物由被岩藻糖部分的连接位置附近的烷基取代基取代的环己烷环组成。掺入E-选择素拮抗剂产生了测试化合物8和2'-苯甲酰化类似物21,在低微摩尔范围内表现出亲和力。通过使用饱和转移差异(STD)-NMR,可以证明亲和力的提高不是由于烷基取代基与目标蛋白E-选择素的疏水性接触,而是由于稳定了其拮抗剂的空间效应所致。生物活性构象。发现在远端位置含有甲基取代基的拮抗剂10和35的亲和力丧失(因此不能支持核心的稳定)进一步支持了该假设。最后,当含有两个甲基取代基的Glc N Ac模拟物(52和53使用),其中一个甲基位于岩藻糖连接位置附近,另一个位于较远位置,亲和力得以恢复。
Glycomimetic replacements for hexoses and N-acetyl hexosamines
申请人:Ernst Beat
公开号:US20080161546A1
公开(公告)日:2008-07-03
Compounds and methods are provided for obtaining oligosaccharide mimics. More specifically, compounds and methods are described wherein oligosaccharide mimics are obtained by incorporating or substituting in a cyclohexane derivative.
[EN] E-SELECTIN ANTAGONISTS MODIFIED BY MACROCYCLE FORMATION TO THE GALACTOSE<br/>[FR] ANTAGONISTES D'E-SÉLECTINES MODIFIÉS PAR FORMATION DE MACROCYCLES SUR LE GALACTOSE
申请人:GLYCOMIMETICS INC
公开号:WO2015109049A1
公开(公告)日:2015-07-23
Provided herein are glycomimetic E-selectin antagonist compounds of formula (I)) and pharmaceutical compositions comprising at least one of the same. The compounds of the present disclosure include trisaccharide domain mimics comprising at least one macrocycle created through the 2nd and 3rd positions on a galactose within the mimic. Methods are also provided comprising using at least one of such compounds and compositions comprising at least one of the same to treat and/or prevent diseases and disorders treatable by inhibiting binding of an E-selectin to an E-selectin ligand.
A Structural-Reporter Group to Determine the Core Conformation of Sialyl Lewisx Mimetics
作者:Beatrice Wagner、Florian P. C. Binder、Xiaohua Jiang、Tobias Mühlethaler、Roland C. Preston、Said Rabbani、Martin Smieško、Oliver Schwardt、Beat Ernst
DOI:10.3390/molecules28062595
日期:——
The d-GlcNAc moiety in sialylLewisx (sLex, 1) acts predominantly as a linker to position the d-Gal and the l-Fuc moieties in the bioactive spatial orientation. The hypothesis has been made that the NHAc group of GlcNAc pushes the fucose underneath the galactose and, thus, contributes to the stabilization of the bioactive conformation of the core of sLex (1). To test this hypothesis, GlcNAc mimetics