(1R,4S)-7,7-Dimethoxy-2-aza-bicyclo[2.2.2]octan-6-one

benzyl 7-acetoxy-6-oxo-2-azabicyclo<2.2.2>octane-2-carboxylate

rel-(6R,6aS,9R)-6-methoxy-7,12-dioxo-6,6a,7,8,9,10,12,13-octahydro-6,9-methano-5H-pyrido<1',2':1,2>-azepino<4,5-b>indole

2-(indol-3-yl-acetyl)-7,7-dimethoxy-2-aza-bicyclo[2.2.2]octan-6-one