methyl (2R,3S)-3-amino-3-phenyl-2-(triethylsilyloxy)propanoate

(3R,4S)-3-羟基-4-苯基-2-氮杂环丁酮

[(3R,4S)-2-oxo-4-phenylazetidin-3-yl] acetate

(3R,4S)-1-((S)-1-(4-methoxyphenyl)propyl)-2-oxo-4-phenylazetidin-3-yl acetate