The present invention provides compounds of Formula III and Formula VI, and processes for their preparation. The present invention further provides use of the compounds of Formula III and Formula VI for the preparation of tofacitinib or isomers or a mixture of isomers or salts thereof.
本发明提供了Formula III和Formula VI的化合物,以及它们的制备方法。本发明还提供了利用Formula III和Formula VI的化合物制备
托法替尼或其异构体或异构体混合物或其盐的用途。