(4S,5S,1'S,E)-5-(tert-butyldimethylsilyloxy)methyl-4-[1',4-di(tert-butyldimethylsilyloxy)but-2'-enyl]-3-methyloxazolidin-2-one

(2R,3R,4S,E)-1,7-dibenzyloxy-2,3-epoxy-5-hepten-4-ol

(3aS,5aR,8aR,8bS)-1-aza-1-methyl-3,5,8-trioxa-as-hexahydroindacene-2,7-dione

(4S,5R,1'S,E)-4-[4'-benzyloxy-1'-(hydroxy)but-2'-enyl]-5-(benzyloxy)methyloxazolidin-2-one

(4R,5S,1'S,E)-4-[1'-benzoyloxy-2'-(benzyloxy)ethyl]-5-[3''-(benzyloxy)-prop-1''-enyl]oxazolidin-2-one