[EN] PROCESS FOR PREPARING PURE LH-PYRAZOLO[3,4-D] PYRIMIDINE DERIVATIVE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN DÉRIVÉ LH-PYRAZOLO[3,4-D] PYRIMIDINE PUR
申请人:IND-SWIFT LABORATORIES LTD
公开号:WO2017163257A1
公开(公告)日:2017-09-28
The present invention relates to an efficient and industrially advantageous process for the preparation of pure lH-pyrazolo[3,4-d] pyrimidine derivative. In particular the present invention provides a process for the preparation of pure 4-amino-3-(4- phenoxyphenyl)-lH-pyrazolo[3,4-d] pyrimidine, a key intermediate of ibrutinib. Particularly, the present invention provides a process for the preparation of 3-amino-4-cyano-5-(4-phenoxy phenyl)pyrazole, wherein none of the intermediates have been isolated, an important precursor for the preparation of 4-amino-3-(4-phenoxyphenyl)- lH-pyrazolo[3,4-d] pyrimidine.
本发明涉及一种高效且在工业上具有优势的制备纯的1H-吡唑并[3,4-d]嘧啶衍生物的方法。具体来说,本发明提供了一种制备纯的4-氨基-3-(4-苯氧基苯基)-1H-吡唑并[3,4-d]嘧啶的方法,这是ibrutinib的一个关键中间体。特别地,本发明提供了一种制备3-氨基-4-氰基-5-(4-苯氧基苯基)吡唑的方法,其中没有任何中间体被分离出来,这是制备4-氨基-3-(4-苯氧基苯基)-1H-吡唑并[3,4-d]嘧啶的重要前体。