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
的取代的吖啶-4-羧酸的新合成2从甲基2- [ Ñ - (2-羧基苯基)氨基]苯甲酸酯(4)报道,通过加入NaBH 4还原相应的imidazolides的(5),所得到的醇的氧化6转化为醛7,并用三氟乙酸将其环化为-4-啶4羧酸甲酯(8),然后进行碱水解。直接酰胺化8a为临床抗癌药物DACA(3)提供了一种新途径,避免使用刺激性酸2a。