Application of Mannich bases to the synthesis of hydroxymethylated isoflavonoids as potential antineoplastic agents
作者:Mykhaylo S. Frasinyuk、Galyna P. Mrug、Svitlana P. Bondarenko、Vitaliy M. Sviripa、Wen Zhang、Xianfeng Cai、Michael V. Fiandalo、James L. Mohler、Chunming Liu、David S. Watt
DOI:10.1039/c5ob01828e
日期:——
The regiospecific Mannich aminomethylation of 7-hydroxyisoflavonoids using bis(N,N-dimethylamino)methane afforded C-8 substituted N,N-dimethylaminomethyl adducts, and the regioselective aminomethylation of 5-hydroxy-7-methoxyisoflavonoids afforded predominantly the C-6 substituted N,N-dimethylaminomethyl adducts. Acetylation of these C-6 or C-8 Mannich bases with potassium acetate in acetic anhydride
使用双(N,N-二甲基氨基)甲烷对7-羟基异黄酮进行区域特异性曼尼希氨基甲基化,得到C-8取代的N,N-二甲基氨基甲基加合物,对5-羟基-7-甲氧基异黄酮进行区域选择性氨基甲基化,主要得到C-6取代的N,N-二甲基氨基甲基加合物。这些C-6或C-8曼尼希碱在乙酸酐中用乙酸钾进行乙酰化,可得到相应的乙酰氧甲基衍生物,随后将其转化为与天然黄酮类物质有关的羟甲基和甲氧基甲基取代的5-羟基或7-羟基异类黄酮。在前列腺癌PC-3细胞增殖试验中,C-8乙酰氧基甲基,羟甲基或甲氧基甲基取代的异黄酮在低微摩尔范围内具有有希望的抑制潜能。