Optimization of the Manufacturing Route to PF-610355 (1): Synthesis of Intermediate <b>5</b>
作者:Stéphane Content、Thomas Dupont、Nicolas M. Fédou、Julian D. Smith、Steven J. R. Twiddle
DOI:10.1021/op300341n
日期:2013.2.15
Tertiary carbinamine 5 is an isolated intermediate in the synthesis of a novel, inhaled beta-2 adrenoreceptor agonist PF-610355. Process development for the key amide-formation and Ritter reactions, together with reaction understanding studies are discussed in context of the synthesis of S. The optimized process employed to manufacture 140 kg of 5 is described, and was shown to have superior metrics to the preliminary commercial route.