(3S,5R)-3,5-bis(tert-butyldimethylsilyloxy)hept-1-en-6-yne

(1S,3R)-1,3-bis(tert-butyldimethylsilyloxy)-1-(oxiran-2-yl)pent-4-yne

[(2R,3S,5R)-3,5-Bis-(tert-butyl-dimethyl-silanyloxy)-2-hydroxymethyl-cyclopentyl]-acetic acid methyl ester

(3aS,5S,6R,6aS)-6-(4-Methoxy-benzyloxy)-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxole-5-carbaldehyde