p. 691 - 693
(2007/10/02)(2008/06/13)
(3R,4R)-4-Benzoyl-3-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-1-(4-methoxy-phenyl)-azetidin-2-one
(3R,4S)-4-Benzoyl-3-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-1-(4-methoxy-phenyl)-azetidin-2-one
<3S-<3α(S*),4β>>-t-butyl 3-(1-t-butyldimethylsilyloxyethyl)-2-azetidinone-4-carboxylate
(2R,3R)-N-(benzoyl)methyl-N-4-methoxyphenyl-2,3-epoxybutanamide
(3S,4S,1'R) N-p-methoxyphenyl-3-(1'-hydroxyethyl)-4-benzoylazetidin-2-one
(2R,3S,5R,6S)-6-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-3-methylsulfanyl-3-nitromethyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid 4-nitro-benzyl ester
(5R,6S)-6-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-3-formyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester
(5R,6S)-6-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-3-hydroxymethyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester
(3R,4R)-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-acetoxyazetidin-2-one
(3R,4R)-4-benzoyloxy-3-<(1R)-(1-tert-butyldimethylsiloxy)ethyl>-azetidin-2-one