[EN] PROCEDUCE FOR CRYSTALLIZATION OF (22E)-(24R)-2-METHYLENE-22-DEHYDRO-1A,24-25-TRIHYDROXY-19-NOR-VITAMIN D3<br/>[FR] PROCÉDÉ DE CRISTALLISATION DE (22E)-(24R)-2-MÉTHYLÈNE-22-DÉHYDRO-1A,24-25-TRIHYDROXY-19-NOR-VITAMINE D3
申请人:WISCONSIN ALUMNI RES FOUND
公开号:WO2019079279A1
公开(公告)日:2019-04-25
Disclosed are methods of purifying the compound (22E)-(247R)-2-methylene- 22-dehydro-1α,24,25-trihydroxy-19-nor-vitamin D3 to obtain the compound in crystalline form. The methods typically include the steps of dissolving (22E)-(24R)-2-methylene-22- dehydro-1α,24,25-trihydroxy-19-nor-vitamin D3 in a solvent comprising ethyl acetate and hexane to form a solution, allowing crystals of (22E)-(24R)-2-methylene-22-dehydro- 1α,24,25-trihydroxy-19-nor-vitamin D3 to form and precipitate from the solution, and recovering the crystals of (22E)-(24R)-2-methylene-22-dehydro-1α,24,25-trihydroxy-19-nor- vitamin D3 from the solution.
揭示了一种纯化化合物(22E)-(24R)-2-甲烯基-22-脱氢-1α,24,25-三羟基-19-去甲维生素D3的方法,以获得晶体形式的化合物。这些方法通常包括以下步骤:将(22E)-(24R)-2-甲烯基-22-脱氢-1α,24,25-三羟基-19-去甲维生素D3溶解在包含乙酸乙酯和己烷的溶剂中形成溶液,使(22E)-(24R)-2-甲烯基-22-脱氢-1α,24,25-三羟基-19-去甲维生素D3的晶体形成并从溶液中沉淀出来,然后从溶液中回收(22E)-(24R)-2-甲烯基-22-脱氢-1α,24,25-三羟基-19-去甲维生素D3的晶体。