Synthesis of timosaponin bii

Details Synthesis of timosaponin bii Synthesis of timosaponin bii

C - Chemistry, Metallurgy

07

J

C07J 71/00 (2006.01) A61K 31/704 (2006.01) A61K 31/7048 (2006.01) A61P 3/10 (2006.01) A61P 25/28 (2006.01)

Patent

CA 2722798

The invention provides a synthetic route from sarsasapogenin to timosaponin BII and related compounds.A dike-tone 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.

La présente invention concerne une voie de synthèse de la sarsasapogénine à la timosaponine BII et des composés apparentés. Un intermédiaire dicétone est décrit, qui peut avantageusement être utilisé pour lassemblage in situ de fragments glucidiques complexes du produit final glycone souhaité. Le composé dicétone est ensuite sélectivement réduit en utilisant un agent réducteur borohydrure pour former le produit final souhaité. Certains des produits finaux et des intermédiaires sont des nouveaux composés en tant que tels.

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