Incorporation of enantiomeric [1-2H]cadaverines into the quinolizindine alkaloids (+)-sparteine and (–)-N-methylcytisine in Baptisia australis
Abstract
Comparison of the labelling patterns in (+)-sparteine (8) and (–)-N-methylcytisine (9) derived biosynthetically from (R)-[1-2H]-(6) and (S)-[1-2H]-cadaverine (7) has distinguished between two possible pathways for conversion of a tetracyclic intermediate into N-methylcytisine.