甲醇

(3R)-1-[(1S)-1-phenylethyl]-3-pyrrolidineacetonitrile

乙酰氯

methyl (4R,1'S)-[2-oxo-1-(1'-phenyleth-1'-yl)pyrrolidin-4-yl]acetate

(3S)-1-[(S)-1-phenethyl]-3-(cyanomethyl) pyrrolidine