methyl 5(S)-(tert-butyldiphenylsilyl)oxy-hept-6-enoate

[3-(tert-butyldimethylsilyl)oxy-2-methoxycabonylmethyl-5-oxocyclopentyl]acetic acid methyl ester

(3aS,4R,5S,6aR)-hexahydro-5-(tert-butyldimethylsilyl)oxy-4-(2-(2-nitrophenylselanyl)-ethyl)-cyclopenta[b]furan-2-one

(S)-5-hydroxyhept-6-enoic acid methyl ester

(E)-(S)-5-(tert-Butyl-dimethyl-silanyloxy)-7-[(1R,2S,3R,5S)-5-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-2-(2-hydroxy-ethyl)-cyclopentyl]-hept-6-enoic acid methyl ester