作者:Kevin M. Maloney、Emily Nwakpuda、Jeffrey T. Kuethe、Jingjun Yin
DOI:10.1021/jo900726f
日期:2009.7.17
A one-pot, high-yielding iodination of hydroxypyridines and hydroxyquinolines is described. The iodination proceeds under mild conditions, and the products are obtained in high yield without the need for chromatographic purification. In addition, the iodination works on both 2- and 4-hydroxypyridines and -hydroxyquinolines.
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 Stillecoupling strategy