Facile synthesis of sulfonium ion derivatives of 1,5-anhydro-5-thio-l-fucitol as potential α-l-fucosidase inhibitors
作者:Guofeng Gu、Hui Liu、B. Mario Pinto
DOI:10.1016/j.carres.2006.08.002
日期:2006.11
Five sulfonium ion derivatives with 1,5-anhydro-5-thio-L-fucitol as a core structure were efficiently synthesized as potential alpha-L-fucosidase inhibitors. The key unit, the tri-O-benzyl derivative of L-fucitol, was readily synthesized from methyl alpha-D-mannopyranoside. Alkylation with methyl iodide or 5-methoxycarbonyl-1-pentyl iodide in acetonitrile containing AgBF4 afforded the corresponding
以潜在的α-L-岩藻糖苷酶抑制剂有效合成了五种以1,5-脱水-5-硫代-L-岩藻糖醇为核心结构的sulf离子衍生物。关键单元,L-岩藻糖醇的三-O-苄基衍生物,很容易从甲基α-D-甘露糖吡喃糖苷合成。用甲基碘或5-甲氧基羰基-1-戊基碘化物在含有AgBF4的乙腈中进行烷基化,得到相应的烷基化四氟硼酸sulf。或者,在含K 2 CO 3的1,1,1,1,3,3,3-六氟-2-丙醇(HFIP)中将三个1,3-环硫酸盐开环得到相应的两性离子硫酸sulfate盐。