Synthetic chemotherapeutic agents. I. Synthesis of 2-substituted thiazolo(5,4-f)quinoline derivatives.(1).
作者:RENZO DOHMORI、SHIZUO KADOYA、ISAO TAKAMURA、NORIO SUZUKI
DOI:10.1248/cpb.24.130
日期:——
By using 6-aminobenzothiazoles as starting meterial, a series of 2-substituted 6-ethyl-6, 9-dihydro-9-oxothiazolo [5, 4-f] quinoline-8-carboxylic acids has been prepared through successive steps of, e.g. condensation with diethyl ethoxymethylenemalonate, Gould-Jacobs reaction, N-alkylation and hydrolysis. These compounds were evaluated for antibacterial activities in vitro. The 2-chloro derivative (10d) showed nearly the same activity with nalidixic acid.
通过使用6-氨基苯并噻唑作为起始材料,经过一系列步骤,例如与二乙基乙氧亚甲基丙二酸二乙酯缩合、Gould-Jacobs反应、N-烷基化和水解,制备了一系列2-取代的6-乙基-6,9-二氢-9-氧代噻唑并[5,4-f]喹啉-8-羧酸。这些化合物在体外进行了抗菌活性评估。2-氯代衍生物(10d)显示出与萘啶酸几乎相同的活性。