(1S,3R)-3-(tert-butyldimethylsilyloxy)-1-(oxiran-2-yl)pent-4-ynyl acetate

(1S,2R,4R)-4-(tert-butyldimethylsilyloxy)-2-(hydroxymethyl)-3-methylenecyclopentyl acetate

((1R,3R,5S)-5-acetoxy-3-(tert-butyldimethylsilyloxy)-2-methylenecyclopentyl)methyl 4-nitrobenzoate

((1R,3R,5S)-5-acetoxy-3-hydroxy-2-methylenecyclopentyl)methyl 4-nitrobenzoate

((1R,3S,5S)-5-acetoxy-3-(2-amino-6-chloro-9H-purin-9-yl)-2-methylenecyclopentyl)methyl 4-nitrobenzoate