SYNTHESIS OF TIMOSAPONIN BII

摘要

The invention provides a synthetic route from sarsasapogenin to timosaponin BII a related compounds. A diketone intermediate is provided, which can advantageously 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 form the desired end product. Certain of the end products and intermediates are novel compounds per se.