1-[1-(pivaloyloxymethyl)ethenyl]cyclopentanecarboxylic acid

methyl 1-(3-((tert-butyldimethylsilyl)oxy)prop-1-en-2-yl)cyclopentane-1-carboxylate

methyl 4-hydroxy-3-methylbut-2-enoate

methyl (E)-4-((tert-butyldimethylsilyl)oxy)-3-methyl-2-butenoate

methyl 6-bromo-2-(3-((tert-butyldimethylsilyl)oxy)prop-1-en-2-yl)hexanoate