2-[(2S,4R,5S)-5-((2E,4E)-Hexa-2,4-dienoylamino)-2-phenyl-[1,3]dioxan-4-ylmethyl]-octanoic acid tert-butyl ester

1,3-O-benzylidene-2-C-methyl-D-erythritol

1,3-benzylidene-D-erythritol 4-(t-butyldimethylsilyl) ether

1,3-O-benzylidene-2-C-methyl-D-erythritol 4-dibenzylphosphate

(2Z)-2-(((2S,4R,5S)-5-azido-2-phenyl-[1,3]dioxan-4-yl)methylene)-octanoic acid tert-butyl ester