The present application falls within the field of drug synthesis, and in particular, the present application relates to a method for preparing ruxolitinib, and a method for preparing the intermediate and relevant intermediates used. The method comprises reacting a compound of formula II with a compound of formula IV or a salt thereof to obtain a compound of formula III, and then subjecting the compound of formula III to an acyl halogenation reaction, an amidation reaction, and a reaction dehydrating an amide to form a cyano group or removing the protecting group to prepare ruxolitinib. The method has the characteristics of brief steps, a high stereoselectivity, a high utilization ratio of atoms, mild reaction conditions and convenient post treatment. The method avoids using expensive asymmetric reaction catalysts, and is suitable for industrial production.
本申请属于药物合成领域,具体地说,本申请涉及一种制备
鲁索利替尼的方法,以及制备所用的
中间体和相关
中间体的方法。该方法包括将化合物II与化合物IV或其盐反应,得到化合物III,然后将化合物III进行
酰卤化反应、
酰胺化反应和去除
酰胺脱水反应以形成
氰基或去除保护基制备
鲁索利替尼。该方法具有步骤简洁、立体选择性高、原子利用率高、反应条件温和、后处理方便的特点。该方法避免使用昂贵的不对称反应
催化剂,适用于工业生产。