Role of the thiosugar ring in the inhibitory activity of salacinol, a potent natural α-glucosidase inhibitor
作者:Katsuki Takashima、Shinya Nakamura、Maiko Nagayama、Shinsuke Marumoto、Fumihiro Ishikawa、Weijia Xie、Isao Nakanishi、Osamu Muraoka、Toshio Morikawa、Genzoh Tanabe
DOI:10.1039/d3ra08485j
日期:2024.1.31
the 5-membered thiosugar ring of 1 played an essential role in the potent activities of sulfonium-type inhibitors. The present findings are interesting and important in understanding the function of salacinol, considering that the observed inhibitory activity trend was contrary to the SAR observed in aza-compounds (23, 24, and 25) in a previous study, which suggested that the cyclic structure did not
在此,氮杂糖的环裂解 ( 24 ) 和截短 ( 25 ) 类似物 1-脱氧野尻霉素 ( 23 ) 表现出与母体化合物相同的抑制活性 ( K i = 4–10 μM) ( 1 , K i = 14μM)。基于这种构效关系 (SAR),salacinol ( 1 )(一种有效的含硫代糖环的 α-葡萄糖苷酶抑制剂)的四个环裂解( 26a-26c和27c )和三个截短( 28a-28c )类似物被合成的。生物测定结果显示,所有合成物均无活性,表明1的5元硫糖环在锍类抑制剂的有效活性中发挥着重要作用。考虑到观察到的抑制活性趋势与先前研究中在氮杂化合物( 23、24和25 )中观察到的SAR相反,目前的发现对于理解salacinol的功能是有趣且重要的,这表明环状结构并没有促进它们的强抑制活性。