((3aR,4S,6R,6aS)-6-Hydroxy-2,2-dimethyl-tetrahydro-cyclopenta[1,3]dioxol-4-yl)-carbamic acid tert-butyl ester

[(3aR,4S,6R,6aR)-6-(tert-Butyl-diphenyl-silanyloxy)-2,2-dimethyl-tetrahydro-cyclopenta[1,3]dioxol-4-yl]-carbamic acid tert-butyl ester

[(1S,2R,3R,4R)-4-(tert-Butyl-diphenyl-silanyloxy)-2,3-dihydroxy-cyclopentyl]-carbamic acid tert-butyl ester

[(1S,4R)-4-(tert-Butyl-diphenyl-silanyloxy)-cyclopent-2-enyl]-carbamic acid tert-butyl ester

tert-butyl ((1S,4R)-4-((tert-butyldiphenylsilyl)oxy)cyclopent-2-en-1-yl)((2-nitrophenyl)sulfonyl)carbamate