申请人:ATTOLINA Emanuele
公开号:US20090286996A1
公开(公告)日:2009-11-19
Process for preparing a compound of formula (I), or a salt thereof,
comprising reacting of a compound of formula (II)
wherein X and R are as herein defined; with a compound of formula (III)
NH
2
OZ (III)
wherein Z is a hydroxy protecting group, in presence of a catalyst, to obtain a compound of formula (IV), or a salt thereof,
removing the hydroxyl protecting group to obtain a compound of formula (V), or a salt thereof;
converting a compound of formula (V), or a salt thereof, into a compound of formula (I), or a salt thereof; and, if desired, converting a compound of formula (I) into a salt thereof, or vice versa.
制备式(I)化合物或其盐的过程包括将式(II)化合物与式(III)NH2OZ反应,其中X和R如此处定义,Z是羟基保护基,在催化剂存在下,得到式(IV)化合物或其盐,去除羟基保护基得到式(V)化合物或其盐,将式(V)化合物或其盐转化为式(I)化合物或其盐,如果需要,将式(I)化合物转化为其盐,反之亦然。