The present invention relates to a JAK inhibitor upadacitinib intermediate and a preparation method therefor, and to a preparation method for a JAK inhibitor upadacitinib. The upadacitinib intermediate of the present application is as shown in Formula (II) or Formula (III),
wherein, R is a protective group of nitrogen atoms, and R1 is an open-chain or cyclic amine group. Compared with the prior art, the method for the synthesis of upadacitinib of the present application, under the premise of ensuring the yield, significantly reduces cost, is environmentally-friendly, and improves the quality of the final product.
本发明涉及一种JAK
抑制剂upadacitinib中间体及其制备方法,以及一种JAK
抑制剂upadacitinib的制备方法。本申请的乌达替尼中间体如式(II)或式(III)所示、
其中,R为氮原子保护基团,R1为开链或环胺基团。与现有技术相比,本申请的合成奥达帕替尼的方法在保证收率的前提下,显著降低了成本,对环境友好,提高了最终产品的质量。