作者:David J. Augeri、Andrew H. Fray、Edward F. Kleinman
DOI:10.1002/jhet.5570270561
日期:1990.7
The 2,3-dehydro analog 2 of the potent quinolone antibacterial agent ofloxacin (1) was synthesized by an efficient six step route beginning with ethyl 2,3,4,5-tetrafluorobenzoylacetate. Formation of the oxazine ring of 2 was accomplished by ozonolysis of 1-(1-buten-3-yl)quinolone 5 to the corresponding aldehyde, which cyclized upon treatment with base via intramolecular displacement of the C-8 fluorine
高效氧氟沙星(1)的喹诺酮类抗菌剂的2,3-脱氢类似物2通过有效的六步路线从2,3,4,5-四氟苯甲酰乙酸乙酯开始合成。通过将1-(1-丁烯-3-基)喹诺酮5臭氧分解为相应的醛来完成2的恶嗪环的形成,该醛在用碱处理后通过分子内置换C-8氟而环化,得到三环酯6。比较了2,3-脱氢氧氟沙星(2)和氧氟沙星(1)的抗菌活性。