申请人:Pinto Mario Brian
公开号:US20060247222A1
公开(公告)日:2006-11-02
Methods for synthesizing Salacinol, its stereoisomers, and analogues, homologues and other derivatives thereof potentially useful as glycosidase inhibitors are described. In some embodiments the compounds of the invention may have the general formula (I) or (II):
The synthetic schemes may comprise reacting a cyclic sulfate with a 5-membered ring sugar containing a heteroatom (X). The heteroatom preferably comprises sulfur, selenium, or nitrogen. The cyclic sulfate and ring sugar reagents may be readily prepared from carbohydrate precursors, such as D-glucose, L-glucose, D-xylose and L-xylose. The target compounds are prepared by opening of the cyclic sulfates by nucleophilic attack of the heteroatoms on the 5-membered ring sugars. The resulting heterocyclic compounds have a stable, inner salt structure comprising a heteroatom cation and a sulfate anion. The synthetic schemes yield various stereoisomers of the target compounds in moderate to good yields with limited side-reactions. Chain-extended analogues of Salacinol are also described.
本文描述了合成Salacinol及其立体异构体、类似物、同系物和其他衍生物的方法,这些化合物可能用作糖苷酶抑制剂。在某些实施例中,本发明的化合物可能具有通式(I)或(II)。合成方案可以包括将环状硫酸酯与含有杂原子(X)的五元环糖反应。所述杂原子优选包括硫、硒或氮。环状硫酸酯和环状糖试剂可以从碳水化合物前体,如D-葡萄糖、L-葡萄糖、D-木糖和L-木糖中轻松制备。目标化合物通过杂原子对五元环糖的亲核攻击打开环状硫酸酯而制备得到。所得到的杂环化合物具有稳定的内盐结构,包括一个杂原子阳离子和一个硫酸盐阴离子。合成方案以中等到良好的产率产生目标化合物的各种立体异构体,并且副反应有限。还描述了Salacinol的链延长类似物。