ChemInform Abstract: Synthesis of 2‐Oxooctahydroimidazo(1,2‐a)pyridine‐3‐spiro‐4′‐piperidine Derivatives Possessing Antiapomorphine Activity.

Abstract The amide (I) is dehydrogenated and cyclized to give the spiro compound (II) which is reduced with NaBH4, producing the lactam (III).