Enantioselective synthesis of novel pyrano[3,2-<i>c</i>]chromene derivatives as AChE inhibitors<i>via</i>an organocatalytic domino reaction
作者:Jie Zheng、Ming He、Baohua Xie、Lu Yang、Zhiye Hu、Hai-Bing Zhou、Chune Dong
DOI:10.1039/c7ob02794j
日期:——
A series of optically active pyrano[3,2-c]chromenes have been synthesized through an asymmetric domino reaction of 4-hydroxy-2H-chromen-2-ones with malononitriles. The targeted molecules were obtained in excellent yields and enantioselectivities (up to 94% yield, 99% ee). The AChE inhibitory activity studies revealed that compounds 4n (IC50 = 21.3 μM) and 4p (IC50 = 19.2 μM) displayed potent acetylcholinesterase
通过4-羟基-2 H-苯甲基-2-酮与丙二腈的不对称多米诺反应,合成了一系列旋光的吡喃并[3,2- c ]色烯。以优异的收率和对映选择性(高达94%的收率,99%ee)获得了目标分子。AChE抑制活性研究表明,化合物4n(IC 50 = 21.3μM)和4p(IC 50 = 19.2μM)显示出有效的乙酰胆碱酯酶抑制作用。在大多数情况下,S-对映异构体优于相应的R-对映体。此外,分子建模为理解这类化合物对AChE的对映选择性提供了一种实用的方法。