Enantioselective Synthesis of 3- Azabicyclo[4.3.0]nonane Alkaloids
作者:Maria Magdalena Cid、Esteban Pombo-Villar
DOI:10.1002/hlca.19930760416
日期:1993.6.30
The stereospecific synthesis of the monoterpene alkaloids (−)-α-skytanthine ((−)-2), (−)-N -demethyle-δ-sky-tanthine((−)-7), and (+)-epidihydrotecomanine (+)-4 was achieved from a common intermediate 22, which in turn was obtained from (1R,4S,1′S)-2-(1′-phenylethyl)-2-azabicyclo[2.2.1]hept-5-ene (10),via a ketene aza-Claisen rearrangement. The piperidine derivative (+)-31, formally the aza-analogue