(1R,5S,6S)-5-benzyl-5,6-O-isopropylidenedioxy-4-oxo-2-cyclohexenyl methanesulfonate

(1R,4S,4aR,5R,6S,7S,8aS)-7-benzyl-5-hydroxy-6,7-O-isopropylidenedioxy-1,4,4a,5,6,7,8,8a-octahydro-endo-1,4-methanonaphthalen-8-one

(1S,2S,3S,4R,4aR,5R,6S,7S,8aR)-7-benzyl-3,5-epoxy-2-iodo-6,7-O-isopropylidenedioxy-1,2,3,4,4a,5,6,8a-octahydro-endo-1,4-methanonaphthalen-8-one