| 摘要 |
The present invention provides for a novel process of making 6-carboxylic acid derivatives of pyrido[2,3-<d]pyrimidin-7-one's, as well as a novel process for making 8-(2,6-difluorophenyl)-4-(4-fluoro-2-methylphenyl)-2-{[2-hydroxy-l-(hydroxymethyl)ethyl]-amino}pyrido[2,3-d]pyrimidin-7(8H)-one, and salts thereof.
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