The present invention relates to processes for preparing 7H-pyrrolo[2,3-d]pyrimidine derivatives which are useful as a Janus kinase (JAK) inhibitor, co-crystals thereof, processes for preparing the co-crystals, and processes for purifying 7H-pyrrolo[2,3-d]pyrimidine derivatives by employing the co-crystals. The present invention provides, for example, a process for preparing 3-[(3S,4R)-3-methyl-6-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1,6-diazaspiro[3.4]octan-1-yl]-3-oxopropanenitrile by employing a co-crystal of 3-[(3S,4R)-3-methyl-6-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1,6-diazaspiro[3.4]octan-1-yl]-3-oxopropanenitrile with 3,5-dimethylpyrazole.
本发明涉及可用作Janus激酶(JAK)
抑制剂的7H-
吡咯并[2,3-d]
嘧啶衍
生物的制备工艺、其共晶体、制备共晶体的工艺以及通过使用共晶体纯化7H-
吡咯并[2,3-d]
嘧啶衍
生物的工艺。例如,本发明提供了一种制备 3-[(3S,4R)-3-甲基-6-(7H-
吡咯并[2,3-d]
嘧啶-4-基)-1,6-二氮杂
螺[3.4]辛烷-1-基]-
3-氧代丙腈的共晶体。