The invention provides a synthetic route from sarsasapogenin to timosaponin BII and related compounds.A diketone intermediate is provided, which can advantageously be used for in situ assembly of complex sugar moieties of the desired glycone end product. The diketone compound is then selectively reduced using a borohydride reducing agent to form the desired end product, certain of the end products and intermediates are novel compounds perse.
这项发明提供了从山楂
皂苷到泰莫沙
皂苷BII及相关化合物的合成途径。提供了一种二酮中间体,可以优点地用于在所需的糖苷末端产物的复杂糖基的原位组装。然后,使用
硼氢化还原剂选择性地还原二酮化合物,形成所需的最终产物,其中某些最终产物和中间体是新颖的化合物。