A series of enantiomerically pure γ-heteroatom substituted β-hydroxy esters were synthesized with high enantioselectivities (up to 99.1% ee) by hydrogenation of γ-heteroatom substituted β-ketoesters in the presence of Ru-(S)-SunPhos catalyst. These asymmetrichydrogenations provide key building blocks for a variety of naturally occurring and biologically active compounds.