1052114-83-6Relevant articles and documents
Preparation method of 4-methoxy-5-cynao-3-pyridinecarboxylic acid methyl ester
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Paragraph 0045-0047, (2020/02/17)
The invention relates to the field of pharmaceutical synthesis, in particular to a preparation method of 4-methoxy-5-cynao-3-pyridinecarboxylic acid methyl ester (shown in a formula I) and an intermediate thereof. According to the preparation method, 4-hydroxynicotinic acid is used as a starting raw material, and through the three reactions of bromination, methylation and cyano-substitution, the target product 4-methoxy-5-cynao-3-pyridinecarboxylic acid methyl ester (shown in the formula I) is prepared, wherein in the cyano-substitution step, cuprous cyanide is adopted to perform cyano-substitution which is better than substitutive synthesis through other cyano-compounds. Through the preparation method, the raw materials are easy and convenient to obtain, reaction conditions are mild, aftertreatment is simple, and therefore the preparation method is suitable for industrial production.
Pyridone Derivatives
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Paragraph 0526; 0527, (2013/11/05)
Novel compounds or salts thereof, or crystals thereof, which inhibit Axl and are useful for treating diseases caused by Axl hyperfunction, diseases associated with Axl hyperfunction and/or diseases accompanied by Axl hyperfunction are provided. Pyridone derivatives represented by the formula (1) having various substituents or salts thereof, or crystals thereof (where R1, R2, R3, R5, R6, A, W, X and n in the formula (1) are as defined in the specification, respectively) are provided.