Role of the side chain stereochemistry in the α-glucosidase inhibitory activity of kotalanol, a potent natural α-glucosidase inhibitor. Part 2
作者:Genzoh Tanabe、Kanjyun Matsuoka、Masahiro Yoshinaga、Weijia Xie、Nozomi Tsutsui、Mumen F. A. Amer、Shinya Nakamura、Isao Nakanishi、Xiaoming Wu、Masayuki Yoshikawa、Osamu Muraoka
DOI:10.1016/j.bmc.2012.09.006
日期:2012.11
To examine the role of the side chain of kotalanol (2), a potent natural α-glucosidase inhibitor isolated from Salacia reticulata, on inhibitory activity, four diastereomers (11a–11d) with reversed configuration (S) at the C-4′ position in the side chain were synthesized and evaluated. Two of the four (11b and 11d) significantly lost their inhibitory activity against both maltase and sucrase, while
为了检查kotalanol(的侧链的作用2),一种有效的天然α葡萄糖苷酶抑制剂分离自五层龙网状,上抑制活性,四个非对映体(11A - 11D)具有相反构型(小号)在C-4'位合成并评估了侧链中的α。四个中的两个(11b和11d)明显失去了对麦芽糖酶和蔗糖酶的抑制活性,而另外两个(11a和11c))在相当大程度上维持了抑制活性,响应于5'和6'位置上的羟基的立体化学的变化而显示出独特的活性。参考对这些抑制剂与hNtMGAM的计算机对接研究,合理化了不同的活性。针对异麦芽糖酶,所有四个类似物都显示出强大的抑制活性,以及2,并且11b和11d表现出酶选择性。