Synthesis and Antibacterial Activity of Novel 7-Substituted-6-fluoro-1-fluoromethyl-4-oxo-4H-(1,3)thiazeto (3,2-.ALPHA.)quinoline-3-carboxylic Acid Derivatives.
作者:Masato MATSUOKA、Jun SEGAWA、Isao AMIMOTO、Yasushi MASUI、Yoshifumi TOMII、Masahiko KITANO、Masahiro KISE
DOI:10.1248/cpb.47.1765
日期:——
A series of 7-substituted-6-fluoro-1-fluoromethyl-4-oxo-4H- [1,3]thiazeto[3,2-a]quinoline-3-carboxylic acid derivatives (2a-1) was prepared and evaluated for antibacterial activity. These compounds were obtained by deacylation of 4-benzoyloxy-2-(1-chloro-2-fluoroethyl)thio-6,7- difluoroquinoline-3-carboxylate (10) and subsequent intramolecular cyclization followed by substitution with cyclic amines
制备并评估了一系列7-取代的-6-氟-1-氟甲基-4-氧代-4H- [1,3]噻唑并[3,2-a]喹啉-3-羧酸衍生物(2a-1)具有抗菌活性。这些化合物通过将4-苯甲酰氧基-2-(1-氯-2-氟乙基)硫基-6,7-二氟喹啉-3-羧酸酯(10)脱酰并随后进行分子内环化,然后用环胺取代然后水解而获得。非对映异构体(17、18)之一的分子内环化反应表明,环化反应通过转化进行,从而以良好的化学和光学收率得到(-)-11a。由11a对映体制备2a对映体,通过使用高效液相色谱(HPLC)通过消旋体的旋光拆分获得11a对映体。化合物2a