Acetic acid (3R,4S,5R,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-(2,2,2-trifluoro-N-phenyl-acetimidoyloxy)-tetrahydro-pyran-3-yl ester

(1R,4R,6R,7R,9R)-9-benzoyloxymethyl-7-(tert-butyldimethylsilyloxy)-4-hydroxy-2-oxa-tricyclo[4.2.1.0(4,9)]nonan-3-one

methyl (3R,5R)-5-(tert-butyldimethylsilyloxy)-3-hydroxy-6-heptenoate

methyl (R)-2-((R)-2-((tert-butyldimethylsilyl)oxy)but-3-en-1-yl)-4-hydroxy-5-oxo-2,5-dihydrofuran-3-carboxylate

(5R,2'R)-3-(benzyloxy)-5-[2'-(tert-butyldimethylsilyloxy)but-3'-enyl]-4-(methoxycarbonyl)furan-2(5H)-one