The present invention relates to a process for the preparation of a compound of formula (I) said process comprising the steps of : a) reacting a compound of formula (II), with an acylating or a silylating agent to produce a compound of formula (III), wherein P1 and P2 are each independently a protecting group selected from R2-Si-R3R4, or R1CO-, wherein R1 is a group selected from C1-6alkyl or C3-6cycloalkyl, each group being optionally substituted by one or more substituents independently selected from fluoro or C1-4alkyl; R2, R3 and R4 are each independently a group selected from C1-6alkyl or phenyl, each group being optionally substituted by one or more substituents independently selected from fluoro or C1-4alkyl; b) reacting the compound of formula (III) in the presence of palladium acetate or a derivative thereof to produce compound of formula (IV); and c) reacting the compound of formula (IV) with a reducing agent to produce compound of formula (I).
本发明涉及一种制备化合物的方法,其
化学式为(I),所述方法包括以下步骤:a)将化合物的
化学式为(II)与酰化剂或
硅化剂反应,生成化合物的
化学式为(III),其中P1和P2分别独立地为选自R2-Si-R3R4或R1CO-的保护基,其中R1是选自C1-6烷基或C3-6环烷基的基团,每个基团可选择性地被一个或多个
氟或C1-4烷基取代;R2、R3和R4分别独立地为选自C1-6烷基或苯基的基团,每个基团可选择性地被一个或多个
氟或C1-4烷基取代;b)在
钯醋酸或其衍
生物存在下,将化合物的
化学式为(III)反应,生成化合物的
化学式为(IV);c)将化合物的
化学式为(IV)与还原剂反应,生成化合物的
化学式为(I)。