methylidene triphenyl phosphorane

(2S,5S)-5-hydroxy-7-methyl-3-oxooctan-2-yl pivalate

(S)-trimethyl(6-methyl-4-(vinyloxy)hept-1-yn-1-yl)silane

(4S)-4-hydroxy-6-methylheptan-2-one

(S)-4-((tert-butyldimethylsilyl)oxy)-6-methylhept-1-en-2-yl trifluoromethanesulfonate