Quinolone antimicrobial agents. 2. Methylenedioxy positional isomers of oxolinic acid
作者:Lester A. Mitscher、Daniel L. Flynn、H. Eugene Gracey、Steven D. Drake
DOI:10.1021/jm00197a014
日期:1979.11
The synthesis and antimicrobial activity of the methylenedioxy positional isomers, 1-ethyl-1,4-dihydro-5,6-methylenedioxy-4-oxo-3-quinolinecarboxylic acid (9) and 1-ethyl-1,4-dihydro-7,8-methylenedioxy-4-oxo-3-quinolinecarboxylic acid (17), of oxolinic acid (18) have been accomplished. Isomer 9 was prepared by the reaction of N-ethyl-6,7-methylenedioxyisatoic anhydride with sodioethyl formylacetate
亚甲二氧基位置异构体1-乙基-1,4-二氢-5,6-亚甲基二氧基-4-氧代-3-喹啉羧酸(9)和1-乙基-1,4-二氢-7的合成及抑菌活性已经完成了草酸(18)的1,8-亚甲基二氧基-4-氧代-3-喹啉羧酸(17)。异构体9是通过N,乙基-6,7-亚甲基二氧基isatoic酸酐与乙酸二乙基甲酰基乙酸酯反应制备的[LA Mitscher,HE Gracey,GW Clark III,和T.Suzuki,J.Med.Chem.Soc。,1993,9,1959。Chem。,21,485(1978)],而异构体17是通过2-[(2,3-亚甲基二氧苯胺基)亚甲基]丙二酸二乙酯的热环化制备的。Kaminsky和RI Meltzer,医学博士。Chem。,11,160(1968)]。与草酸(18)本身相比,这两种新的异构体在体外的活性都较低。