Carbon-14 labelled nitrogen heterocycles; the syntheses of three phosphodiesterase inhibitors
作者:Kenneth W M Lawrie、Christine E A Novelli、David Saunders、William J Coates
DOI:10.1002/jlcr.2580360910
日期:1995.9
The syntheses of three heterocyclic phosphodiesterase inhibitors are described from a common radiolabelled precursor, namely 2-propoxybenzo[cyano-14C]nitrile. Conversion of the nitrile to the corresponding methyl ketone or amidine allows elaboration of the heterocycles radiolabelled within the ring systems.