Synthesis of 5-trifluoromethyl-5,8-dideazafolic acid and 5-trifluoromethyl-5,8-dideazaisofolic acid
作者:Shyam K. Singh、Meledath Govindan、John B. Hynes
DOI:10.1002/jhet.5570270746
日期:1990.11
The target folate analogue 5-trifluoromethyl-5,8-dideazafolic acid has been elaborated in a seven-step reaction sequence beginning with 2-fluoro-6-trifluoromethylbenzonitrile. The bridge-reversed isomer 5-trifluoromethyl-5,8-dideazaisofolic acid was prepared in six steps using the common intermediate 2,6-diamino-3,4-dihydro-4-oxo-5-trifluoromethylquinazoline. The key intermediate 2-amino-3,4-dihyd
以2-氟-6-三氟甲基苄腈为起始原料,以七步反应的顺序对目标叶酸类似物5-三氟甲基-5,8-二氮杂萘甲酸进行了详细的阐述。使用普通中间体2,6-二氨基-3,4-二氢-4-氧代-5-三氟甲基喹唑啉,分六个步骤制备了桥反异构体5-三氟甲基-5,8-二叠氮基异叶酸。使用两种不同的合成途径制备了关键中间体2-氨基-3,4-二氢-4-氧代-5-三氟甲基-喹唑啉,发现得到的产物是相同的。