(2008/06/13)
p. 7557 - 7560
(2007/10/02)Perbenzoic acid
(3S,4S)-3-<(R)-1'-(dimethyl-t-butylsilyloxy)ethyl>-4-oxoazetidine-2-carboxylic acid
<3S-<3α(S*),4β>>-t-butyl 3-(1-t-butyldimethylsilyloxyethyl)-2-azetidinone-4-carboxylate
(3S,4S)-4-Benzoyl-3-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-1-(4-methoxy-phenyl)-azetidin-2-one
[3S-[3α(S*),4β]]-4-benzoyl-3-[1-[[[(1,1-dimethyl-ethyl)dimethyl]silyl]oxy]ethyl]-2-azetidinone
(3R,4R)-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-acetoxyazetidin-2-one
(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
(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
(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)-selenapenem