Efficient asymmetric synthesis of (S)-2-ethylphenylpropanoic acid derivative, a selective agonist for human peroxisome proliferator-activated receptor alpha

An optically active phenylpropanoic acid derivative, a selective agonist for human peroxisome proliferator-activated receptor alpha, was efficiently prepared in high optical purity by using Evans chiral oxazolidinone technique as a key step.