Heterocycles

Synthesis of 8-hydroxyimidazo [1, 2-a] pyridine-2-carboxylic acid and its derivatives

U Groselj, J Bezensek, A Meden, J Svete, B Stanovnik…

文献索引：Groselj, Uros; Bezensek, Jure; Meden, Anton; Svete, Jurij; Stanovnik, Branko; Oblak, Marko; Stefanic Anderluh, Petra; Urleb, Uros Heterocycles, 2008 , vol. 75, # 6 p. 1355 - 1370

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被引用次数: 6

摘要

Résumé/Abstract Two new imidazo [1, 2-a] pyridines, 8-hydroxyimidazo [1, 2-a] pyridine-2- carboxylic acid (4) and ethyl 8-hydroxyimidazo [1, 2-a] pyridine-2-carboxylate (6) were prepared via cyclization of 2-aminopyridin-3-ol (1) with bromopyruvic acid (2) and ethyl bromopyruvate (3), respectively. 8-Hydroxyimidazo [l, 2-a]-pyridine-2-carboxylic acid (4) was successfully coupled with various amino acid derivatives via its active ester intermediate ...