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(2007/10/02)[(3S,4R)-1-(tert-Butyl-dimethyl-silanyl)-2-oxo-4-phenylsulfanyl-azetidin-3-yl]-carbamic acid benzyl ester
(3S,4R)-3-Amino-1-(tert-butyl-dimethyl-silanyl)-4-phenylsulfanyl-azetidin-2-one
N-(tert-butyldimethylsilyl)-4-thiophenyl-2-azetidinone
[(3S,4R)-1-(tert-Butyl-dimethyl-silanyl)-3-methoxy-2-oxo-4-phenylsulfanyl-azetidin-3-yl]-carbamic acid benzyl ester
(4R)-4-phenylthio-2-azetidinone