作者:Estela Riego、Nuria Bayó、Carmen Cuevas、Fernando Albericio、Mercedes Álvarez
DOI:10.1016/j.tet.2004.12.011
日期:2005.2
Quinoline-2-carboxylic acid derivatives cap the N-terminal of several natural cyclic peptides with antitumoral activity. A new and convenient route for the preparation of 3-hydroxyquinoline-2-carboxylic acid is discussed. The preparation of the title compound is accomplished by a four-step procedure from 3-hydroxyquinoline via MOM protection of the hydroxyl group, followed by a 1,2-addition of methyllithium to the
喹啉-2-羧酸衍生物在具有抗肿瘤活性的几种天然环肽的N末端加帽。讨论了制备3-羟基喹啉-2-羧酸的新途径。标题化合物的制备通过以下四个步骤完成:从3-羟基喹啉通过羟基的MOM保护,然后在伴随氧化的情况下将1,2-甲基锂加到喹啉环上,最后进行两个步骤步氧化过程,用于将甲基转化为羧酸以及去除MOM基团。此外,对其制备的不同尝试导致了其他有趣的喹啉,例如2-氯-3-羟基喹啉-4-羧酸和受保护的3,3'-二羟基-2,2'-联喹啉。