Parallel synthesis of N-biaryl quinolone carboxylic acids as selective M1 positive allosteric modulators
摘要:
An iterative analog library synthesis approach was employed in the exploration of a quinolone carboxylic acid series of selective M-1 positive allosteric modulators, and strategies for improving potency and plasma free fraction were identified. (C) 2009 Elsevier Ltd. All rights reserved.
在几种药物化合物中很重要的1,4-二氢4-氧代-3-喹啉甲酸乙酯环结构是由2-(2-氟代苯甲酰基)乙酸乙酯分两步制备的。用N,N-二甲基甲酰胺二甲基乙缩醛处理这种β-酮酸酯可得到2-二甲基氨基亚甲基衍生物的97%收率。将此β-烯胺酮与伯胺在N,N-二甲基甲酰胺中在140°C下反应48小时,然后串联添加得到1,4-二氢-4-氧代-3-喹啉羧酸酯,收率60-74%。消除-S N Ar反应。介绍了起始材料的综合以及过程详细信息和机制方案。J.杂环化学。(2011)。