New Practical Synthesis of the Key Intermediate of Candesartan
作者:Márta Porcs-Makkay、Tibor Mezei、Gyula Simig
DOI:10.1021/op700041z
日期:2007.5.1
The development of a new, practical synthesis of methyl 3-amino-N-[(2‘-cyanobiphenyl-4-yl)methyl]anthranilate, keyintermediate of candesartan, is described, starting from methyl anthranilate. The features of our approach are as follows: (i) introduction of the 3-nitro group by acid catalysed rearrangement of the corresponding methyl N-nitroanthranilate; (ii) introduction of a (2‘-cyanobiphenyl-4-yl)methyl