p. 419
(2007/10/02)p. 765 - 768
(2007/10/02)p. 2200 - 2208
(2007/10/02)benzyl chloroformate
[(3S,4R)-1-(tert-Butyl-dimethyl-silanyl)-2-oxo-4-phenylsulfanyl-azetidin-3-yl]-carbamic acid benzyl ester
[(3S,4R)-1-(tert-Butyl-dimethyl-silanyl)-3-methoxy-2-oxo-4-phenylsulfanyl-azetidin-3-yl]-carbamic acid benzyl ester
((2R,3S)-2-Benzenesulfinyl-3-methoxy-4-oxo-azetidin-3-yl)-carbamic acid benzyl ester
sodium methylate