Efficient synthesis of ribonucleotide reductase inhibitors 3-aminopyridine-2-carboxaldehyde thiosemicarbazone (3-AP) and 3-amino-4-methylpyridine-2-carboxaldehyde thiosemicarbazone (3-AMP) via palladium mediated cross-coupling reactions
作者:Jun Li、Shu-Hui Chen、Xiuyan Li、Chuansheng Niu、Terrence W Doyle
DOI:10.1016/s0040-4020(97)10298-8
日期:1998.1
efficient synthesis of potent ribonucleotide reductases inhibitors 3-amino-pyridine-2-carboxaldehyde thiosemicarbazone (3-AP) and 3-amino-4-methyl-pyridine-2-carboxaldehyde thiosemicarbazone (3-AMP) is described. The synthesis of 3-AP and 3-AMP was achieved in 4 and 5 steps, with overall yields of 61% and 39%, respectively. The synthesis featured a convergent approach utilizing a Stille coupling strategy
描述了有效合成有效的核糖核苷酸还原酶抑制剂3-氨基吡啶-2-羧醛硫代半碳酸钠(3-AP)和3-氨基-4-甲基吡啶-2-羧醛硫代半碳酰胺(3-AMP)。3-AP和3-AMP的合成分4步和5步完成,总收率分别为61%和39%。该合成的特征在于利用Stille偶联策略的收敛方法来制备乙烯基吡啶衍生物。还讨论了一种更经济的利用Heck反应合成乙烯基吡啶的方法。