Structure-Activity Relations for Imidazo-pyridine-Type Inhibitors of ?-D-Glucosidases
作者:Thierry Granier、Narendra Panday、Andrea Vasella
DOI:10.1002/hlca.19970800329
日期:1997.5.12
conditions, the synthesis of the imidazoles yielded mostly the gluco-imidazole 19 or a mixture of the gluco/manno epimers 19/20. In contrast to the triazole 4, the isomeric triazole 7 proved a good inhibitor of retaining β-glucosidases from sweet almonds and from Caldocellum saccharolyticum. This observation and the qualitative correlation between basicity and inhibitory power of the tetrahydropyridoazoles
三唑7和已知的葡萄糖-和甘露聚糖-构型的咪唑10和11是通过在Hg(OAc)2促进的反应中,将肼环与肼-甲醛或氨基乙醛二甲基乙缩醛环合到铝硫代内酰胺14而制备的。取决于反应条件,咪唑的合成主要产生葡萄糖-咪唑19或葡萄糖/甘露糖差向异构体19/20的混合物。与三唑4相反,异构体三唑7被证明是保留甜杏仁和糖化卡尔德氏菌中β-葡萄糖苷酶的良好抑制剂。该观察结果和四氢吡啶并恶唑的碱性和抑制能力之间的定性相关性为(通过部分保留)β-葡糖苷酶的糖苷“侧向质子化”假说提供了进一步的证据。