Enzymatic resolution of chiral phosphinate esters |
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Authors: | Li Yingchun Aubert Sarah D Maes Eugene G Raushel Frank M |
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Affiliation: | Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, USA. |
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Abstract: | The bacterial phosphotriesterase has been shown to catalyze the stereoselective hydrolysis of phosphinate esters. The wild-type enzyme preferentially hydrolyzes the SP-enantiomers of methyl phenyl p-X-phenylphosphinate esters by 3 orders of magnitude. The mutant enzyme, I106T/F132A/H254G/H257W, exhibits the opposite stereoselectivity and hydrolyzes the RP-enantiomer up to 30 times faster than the corresponding SP-enantiomer. The enantiomerically pure phosphinate esters, prepared from the kinetic resolution of racemic mixtures, can serve as the entry point for the chemoenzymatic preparation of P-chiral phosphines and phosphine oxides. |
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