Synthesis of mannose-6-phosphate analogs: large-scale preparation of isosteric mannose-6-phosphonate via cyclic sulfate precursor
作者:Nikolai A Khanjin、Jean-Louis Montero
DOI:10.1016/s0040-4039(02)00734-7
日期:2002.5
A scale-up synthesis of isosteric phosphonate analog of mannose-6-phosphate (M6P) is presented via regioselective nucleophilic displacement of the protected 4,6-cyclic sulfate precursor by dialkyl lithiomethylphosphonates in the key step. The five-step synthesis requires only simple purification procedures after each step excluding chromatography separations. The usage of proper nucleophiles makes
在关键步骤中,通过二烷基硫代甲基膦酸酯对受保护的4,6-环硫酸盐前体进行区域选择性亲核置换,从而实现了甘露糖6-磷酸(M6P)的立体异构膦酸酯类似物的大规模合成。五步合成仅需简单的纯化步骤即可完成每一步(色谱分离除外)。适当亲核试剂的使用使该方法也可用于制备其他等排的M6P类似物,例如α,β-不饱和膦酸酯,磺酸酯等,有可能扩展该方法用于其他糖磷酸酯的类似物。