General and efficient strategy for erythrinan and homoerythrinan alkaloids: Syntheses of (±)-3-demethoxyerythratidinone and (±)- erysotramidine
A general and efficient strategy to both aromatic-type and nonaromatic-type erythrinan and homoerythrinan alkaloids has been developed. This approach involves a key two-step sequence, an alkylation of a ketone with various N-substituted iodoacetamides fol