Synthesis of 3-fluoro-2-substituted amino-5,12-dihydro-5-oxobenzoxazolo[3,2-a]quinoline-6-carboxylic acids employing the tandem double ring closure reaction of N-acetyl-N-(2-hydroxyphenyl)anthranilic acid as the key step
Synthesis of 3-fluoro-2-substituted amino-5,12-dihydro-5-oxobenzoxazolo[3,2-a]quinoline-6-carboxylic acids employing the tandem double ring closure reaction of N-acetyl-N-(2-hydroxyphenyl)anthranilic acid as the key step