(2S,3R)-2-(2,2-Dibromo-vinyl)-tetrahydro-pyran-3-ol

(2S,3S,2''R,3''S)-p-toluenesulfonic acid 3-[3''-(tert-butyldimethylsiloxy)tetrahydropyran-2''-yl-methyl]-oxiran-2-yl-methyl ester

tert-Butyl-{3-[(2R,3R)-3-(2,2-dibromo-vinyl)-oxiranyl]-propoxy}-dimethyl-silane