rac-2-amino-3-[4-(1-ylooxy-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl)phenyl]propionic acid ethyl ester 在
(R)-N-acetyl-2-phenylglycine 作用下,
以43.9%的产率得到2-amino-3-[4-(1-ylooxy-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl)phenyl]propionic acid ethyl ester