申请人:Dipharma Francis S.r.l.
公开号:EP1857435A3
公开(公告)日:2008-05-07
A process for the preparation of a compound of formula (I), or a salt thereof, both as the as individual isomer and as mixtures thereof,
wherein each of A and B is independently aryl or heteroaryl optionally substituted with 1 to 4 substituents; and R and R1, which can be the same or different, are hydrogen, C1-C6 alkyl or an amino-protecting group; comprising the reaction of a compound (II)
wherein A and B are as defined above, with a compound (III)
wherein each of R and R1 is independently C1-C6 alkyl or an amino-protecting group; and X is a leaving group; in the presence of a basic agent; and, if desired the conversion of a compound (I) to another compound (I); and/or, if desired, the separation of an isomeric mixture of a compound (I) into the individual isomers; and/or, if desired, the conversion of a compound (I) to a salt thereof.
一种用于制备化合物(I)或其盐的方法,其中化合物可以是单个异构体或其混合物,其中A和B各自独立地是芳基或杂环芳基,可选择地取代1至4个取代基;而R和R1可以相同也可以不同,分别是氢、C1-C6烷基或氨基保护基;包括化合物(II)与化合物(III)的反应,其中A和B如上定义,R和R1各自独立地是C1-C6烷基或氨基保护基;X是一个离去基团;在碱性试剂的存在下进行;如果需要,将化合物(I)转化为另一种化合物(I);如果需要,将化合物(I)的异构体混合物分离为单个异构体;如果需要,将化合物(I)转化为其盐。