专利号:WO-0107416-A1 优先权日:1999-07-28 标题 :Method of producing pyridazine carboxylic acid derivatives 发明人:BESSARD YVES; CRETTAZ ROGER; EGGEL MICHAEL 权利人:LONZA AG; BESSARD YVES; CRETTAZ ROGER; EGGEL MICHAEL 摘要:The invention relates to a method of producing pyridazine carboxylic acid derivatives of the general formulae (Ia) or (Ib), wherein R<1> represents a group of the formula -OR<3> or -NR<4>R<5>, R<2> represents hydrogen, chlorine, a group of the formula -OR<6> or a group of the formula -NR<7>R<8>, R<3> represents C1-10 alkyl, C3-8 cycloalkyl or aryl-C1-4-alkyl, R<4> represents C1-10 alkyl, C3-8 cycloalkyl, optionally substituted aryl or aryl-C1-4-alkyl, R<5> represents hydrogen, C1-10 alkyl, C3-8 cycloalkyl, optionally substituted aryl or aryl-C1-4-alkyl and R<6> represents C1-10 alkyl, C3-8 cycloalkyl, aryl-C1-4-alkyl or an optionally substituted aromatic or heteroaromatic rest and R<7> and R<8> represent independently C1-10 alkyl, C3-8 cycloalkyl or aryl-C1-4-alkyl or together with the nitrogen atom form a saturated or aromatic heterocyclic ring. The inventive derivatives are obtained by reacting the corresponding 3-chloropyridazines or 3,6-dichloropyridazine with carbon monoxide and alcohols or amines H-R<1> in the presence of palladium-phosphin complexes and bases. The pyridazine carboxylic acid derivatives (Ia, Ib) are the intermediates for the synthesis of pharmaceutically active substances.
参考文献:10.1016/j.bbrc.2023.08.050 摘要:Ikeda Y, Davis MI, Sumita K, Zheng Y, Kofuji S, Sasaki M, Hirota Y, Pragani R, Shen M, Boxer MB, Takeuchi K, Senda T, Simeonov A, Sasaki AT. Multimodal action of KRP203 on phosphoinositide kinases in vitro and in cells. Biochemical and Biophysical Research Communications. 2023 Oct;679():116–21. doi: 10.1016/j.bbrc.2023.08.050.