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

(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

(3a'S,6'R,7'R,7a'S)-N-methoxy-N-methyl-2-[1'-methyl-2'-oxo-7'-(triethylsilyloxy)hexahydropyrano[4,3-d]oxazol-6'-yl]acetamide