C-Glucopyranosyl-1,2,4-triazol-5-ones: synthesis and inhibition of glycogen phosphorylase
作者:Éva Bokor、Zsolt Széles、Tibor Docsa、Pál Gergely、László Somsák
DOI:10.1016/j.carres.2015.12.005
日期:2016.6
Various C-glucopyranosyl-1,2,4-triazolones were designed as potential inhibitors of glycogen phosphorylase. Syntheses of these compounds were performed with O-perbenzoylated glucose derivatives as precursors. High temperature ring closure of N(1)-carbamoyl-C-β-D-glucopyranosyl formamidrazone gave 3-β-D-glucopyranosyl-1,2,4-triazol-5-one. Reaction of N(1)-tosyl-C-β-D-glucopyranosyl formamidrazone with
设计了各种C-吡喃葡萄糖基-1,2,4-三唑酮作为糖原磷酸化酶的潜在抑制剂。这些化合物的合成以邻-过苯甲酰化的葡萄糖衍生物为前体进行。N(1)-氨基甲酰基-C-β-D-吡喃葡萄糖基甲酰胺ami的高温闭环得到3-β-D-吡喃葡萄糖基-1,2,4-三唑-5-酮。N(1)-甲苯磺酰基-C-β-D-吡喃葡萄糖基甲酰胺zone与ClCOOEt的反应提供了3-β-D-吡喃葡萄糖基-1-甲苯磺酰基1,2,4-三唑-5-酮。PhNHNHBoc将原位制备的β-D-吡喃葡萄糖基羰基异氰酸酯转化为3-β-D-吡喃葡萄糖基-1-苯基-1,2,4-三唑-5-酮,而类似的1-(2-萘基)衍生物为萘-2-硼酸在Cu(II)催化的N-芳基化反应中从未取代的三唑酮制得。通过Zemplén脱酰作用制备测试化合物。