[EN] PROCESS FOR THE PREPARATION OF A PYRIMIDINO-DIAZEPINE DERIVATIVE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN DÉRIVÉ DE PYRIMIDINO-DIAZÉPINE
申请人:CYCLACEL LTD
公开号:WO2021032958A1
公开(公告)日:2021-02-25
In one aspect, the invention relates to a process for preparing a compound of formula (XII), wherein PG is a protecting group, or a compound of formula (XI), comprising the steps of: (i) treating a compound of formula XIII, wherein PG is a protecting group, with N- methylpiperazine to form a compound of formula XII, wherein said compound of formula XII is in the form of a mixture of cis and trans isomers; (ii) combining the mixture formed in step (i) with an organic solvent and heating the solvent mixture so formed; (iii) isolating the trans-isomer of the compound of formula XII from the solvent mixture formed in step (ii); and (iv) optionally treating said trans-isomer of the compound of formula XII with an acid to form a compound of formula XI; and isolating said compound of formula XI. Further aspects of the invention relate to processes for preparing pyrimido-diazepinone derivatives using the above process and intermediates.
在一个方面,该发明涉及一种制备化合物的过程,其化学式为(XII),其中PG是保护基,或者化学式为(XI)的化合物,包括以下步骤:(i) 用N- 甲基哌嗪处理化学式为XIII的化合物,其中PG是保护基,形成化学式为XII的化合物,其中所述化学式为XII的化合物以顺式和反式异构体的混合物形式存在;(ii) 将步骤(i)中形成的混合物与有机溶剂结合并加热所形成的溶剂混合物;(iii) 从步骤(ii)中形成的溶剂混合物中分离化学式为XII的反式异构体;以及(iv) 可选地用酸处理所述化学式为XII的反式异构体,形成化学式为XI的化合物;并分离所述化学式为XI的化合物。该发明的进一步方面涉及使用上述过程和中间体制备嘧啶二氮杂环己酮衍生物的过程。