(2R,3S)-3-(2-(1,3-dioxolan-2-yl)ethyl)-1-((3aS,6R,7aR)-8,8-dimethyl-2,2-dioxidotetrahydro-3H-3a,6-methanobenzo[c]isothiazol-1(4H)-yl)-2-(hydroxymethyl)-3-methylpent-4-en-1-one

(2R)-N-[(2R,3S)-2-(acetoxymethyl)-5-(1,3-dioxolan-2-yl)-3-methyl-3-vinylpentanoyl]bornane-10,2-sultam

(2R)-N-[3,3-dimethyl-4,4-bis(trimethylsilyloxy)cyclobutanecarbonyl]-bornane-10,2-sultam

(2R)-N-[(2S,3R)-6-(tert-butyldiphenysilyloxy)-2-formyl-3-methyl-3-vinylhexanoyl]bornane-10,2-sultam

(2R)-N-[(2R,3S)-6-(tert-butyldiphenysilyloxy)-2-formyl-3-methyl-3-vinylhexanoyl]bornane-10,2-sultam