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A modified synthetic route of ofloxacin
Author(s): 
Pages: 341-343
Year: Issue:  6
Journal: CHINESE JOURNAL OF ANTIBIOTICS

Keyword:  氧氟沙星234-三氟硝基苯2-羟甲基-2-甲基-13-二氧五环合成改进;
Abstract: 采用2,3,4-三氟硝基苯为原料和2-羟甲基-2-甲基-1,3-二氧五环缩合、水解得醚酮,收率90%.再经雷尼镍氢化,乙氧亚甲基丙二酸二乙酯(EMME)缩合,再经硫酸、乙酐环合,加水水解得羧酸物,收率75%.羧酸物与N-甲基哌嗪缩合、精制得氧氟沙星,收率85%,总收率57.4%.
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