(1S,4R,4aS,8R,8aR)-8-((tert-butyldimethylsilyl)oxy)-4,4a,8,8a-tetrahydro-1,4-methanonaphthalen-5(1H)-one

(1R,2S,6S,7R,8S)-6-[(tert-butyldimethylsilyl)oxy]-4-iodotricyclo[6.2.1.02,7]undeca-4,9-dien-3-one

(1S,5S,6R)-5-[(tert-butyldimethylsilyl)oxy]-7-[(1R)-1-(4-methoxyphenyl)ethyl]-7-azabicyclo[4.1.0]heptan-2-one