METHOD FOR PREPARING HEXAHYDROFURO-FURANOL DERIVATIVE, INTERMEDIATE THEREOF AND PREPARATION METHOD THEREFOR
申请人:Jiangsu Ruike Medical Science And
Technology Co., Ltd.
公开号:EP3778553A1
公开(公告)日:2021-02-17
The invention relates to the field of pharmaceutical synthesis, in particular to the preparation method of hexahydrofuro-furanol derivative, intermediates thereof and preparation methods thereof. The preparation methods comprises the steps of halogenation reaction, acylation reaction, enzymatic reduction reaction, reaction with amine compounds, reduction ring closure reaction (A1, A2, B, Cp1, CL, Cf)
wherein, R1, R2, R3 are hydrogen or hydroxy protecting groups; R4 and R5 are the same or different and are phenyl, alkyl or substituted phenyl. In the preparation process of hexahydrofuro-furanol derivatives, the chirality is constructed by enzymatic method, and the product can be prepared with very high optical purity by adopting such technical means. The preparation method can be used to prepare the key intermediate, (3R, 3aS, 6aR)-hexahydrofuro[2,3-b]-3-ol, of Darunavir, in commercial production, which is a very economical route suitable for industrial production.
本发明涉及药物合成领域,尤其涉及六氢呋喃醛衍生物的制备方法、其中间体及其制备方法。制备方法包括卤化反应、酰化反应、酶还原反应、与胺化合物反应、还原封环反应(A1、A2、B、Cp1、CL、Cf)等步骤。
其中,R1、R2、R3 为氢或羟基保护基团;R4 和 R5 相同或不同,为苯基、烷基或取代苯基。在六氢糠醇衍生物的制备过程中,通过酶法构建手性,采用这种技术手段可以制备出光学纯度非常高的产品。该制备方法可用于制备达芦那韦的关键中间体(3R, 3aS, 6aR)-六氢呋喃并[2,3-b]-3-醇,并实现商业化生产,是一条非常经济的路线,适合工业化生产。