A new synthesis of substituted acridine-4-carboxylic acids and the anticancer drug N-[2-(dimethylamino)ethyl]acridine-4-carboxamide (DACA)
作者:Swarna A. Gamage、Julie A. Spicer、Gordon W. Rewcastle、William A. Denny
DOI:10.1016/s0040-4039(96)02396-9
日期:1997.1
A new synthesis of substituted acridine-4-carboxylic acids 2 from methyl 2-[N-(2-carboxyphenyl)amino]benzoates (4) is reported, via NaBH4 reduction of the corresponding imidazolides (5), oxidation of the resulting alcohols 6 to aldehydes 7, and cyclisation of these with trifluoroacetic acid to the methyl acridine-4-carboxylates (8), followed by base hydrolysis. Direct amidation of 8a provides a new