申请人:CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD.
公开号:US20190023712A1
公开(公告)日:2019-01-24
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.
4,5-DIHYDRO-1H-PYRAZOLE COMPOUNDS AND THEIR PHARMACEUTICAL USES
申请人:Arhancet Graciela Barbieri
公开号:US20120022058A1
公开(公告)日:2012-01-26
Mineralocorticoid receptor antagonists (MRa), pharmaceutical compositions containing such inhibitors and the use of such inhibitors to treat, for example, diabetic nephropathy and hypertension in mammals, including humans.
PREPARATION METHOD FOR CHIRAL PYRROLOPYRIMIDINE COMPOUND
申请人:Chia Tai Tianqing Pharmaceutical Group Co., Ltd.
公开号:EP3473625A1
公开(公告)日:2019-04-24
Provided are a preparation method for a chiral pyrrolopyrimidine compound and a related intermediate. In the method, a compound of formula A and a compound of formula 6 or a salt thereof are reacted to obtain a compound of formula 7 or a compound of formula 14, and a compound of formula I is prepared from the compound of formula 7 or the compound of formula 14. Also provided are the intermediate used, a preparation method for the intermediate and a use of the intermediate in the preparation of the compound of formula I. The preparation method has characteristics such as brief steps, a high stereoselectivity, a high utilization ratio of atoms, mild reaction conditions and a convenient post-treatment. The method avoids using an expensive asymmetric reaction catalyst, and is suitable for industrial production.
本发明提供了一种手性吡咯并嘧啶化合物及相关中间体的制备方法。在该方法中,式 A 化合物和式 6 化合物或其盐反应得到式 7 化合物或式 14 化合物,由式 7 化合物或式 14 化合物制备式 I 化合物。还提供了所用的中间体、中间体的制备方法以及中间体在制备式 I 化合物中的用途。该制备方法具有步骤简短、立体选择性高、原子利用率高、反应条件温和和后处理方便等特点。该方法避免了使用昂贵的不对称反应催化剂,适合工业化生产。
Synthesis process of ruxolitinib
申请人:CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD.
公开号:US10562904B2
公开(公告)日:2020-02-18
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.