MAOS of Quinoxalines, Conjugated Pyrazolylquinoxalines and Fused Pyrazoloquinoxalines from l??Ascorbic and d??Isoascorbic Acid

ESH El Ashry, KF Atta, S Aboul??Ela…

文献索引：Ashry, El Sayed H. El; Atta, Kamal F.; Aboul-Ela, Salah; Beldi, Razika Journal of Carbohydrate Chemistry, 2007 , vol. 26, # 1 p. 1 - 16

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被引用次数: 12

摘要

Microwave??assisted organic synthesis (MAOS) has been used to accelerate the conversion of l??ascorbic acid (1) and d??isoascorbic acid (2) to the title heterocycles by conversion to 3??(l?? threo??or d??erythro??glycerol??1??yl) quinoxaline??2??carboxylic acid o??aminoanilides (7 and 8), which were transformed to lactones 9 and 10, respectively, under acidic condition. The acetylation of compounds 9 and 10 afforded 3??(l??threo??or d??erythro??2, 3??di??O??acetyl?? ...