Stereoselective synthesis of stereotriad subunits of polyketides through additions of nonracemic allenylsilanes to (R)- and (S)-2-methyl-3-oxygenated propanals

Stereoselective synthesis of stereotriad subunits of polyketides through additions of nonracemic allenylsilanes to (R)- and (S)-2-methyl-3-oxygenated propanals