Hydroxylated oxanes as xyloside analogs for determination of the minimal binding requirements of β4GalT7
作者:Karin Thorsheim、Sebastian Clementson、Emil Tykesson、Dennis Bengtsson、Daniel Strand、Ulf Ellervik
DOI:10.1016/j.tetlet.2017.07.078
日期:2017.8
both inhibit and prime GAG synthesis by acting as inhibitors or substrates for β4GalT7. In this report, we exploit hydroxylated oxanes as deoxygenated xyloside analogs to clarify the minimum protein-ligand interactions required for galactosylation and/or inhibition. Enantiomerically pure substances were synthesized using a chiral pool approach whereas the corresponding racemates were obtained from simple
β-1,4-半乳糖基转移酶7(β4GalT7)是糖胺聚糖(GAG)链生物合成中的关键酶。天然和合成木糖苷可通过充当β4GalT7的抑制剂或底物来抑制和引发GAG合成。在本报告中,我们利用羟基氧烷作为脱氧的木糖苷类似物来阐明半乳糖基化和/或抑制所需的最小蛋白质-配体相互作用。对映体纯物质是使用手性池方法合成的,而相应的外消旋物则是从简单的起始原料中获得的。β4GalT7测定的结果表明,在恶烷环上的单个羟基不足以诱导半乳糖基化或抑制,这意味着需要存在至少两个取代基,其中一个是3-OH。