p. 13867 - 13880
(2007/10/03)p. 12 - 20
(2007/10/02)p. 1795 - 1802
(2007/10/02)p. 2793 - 2796
(2007/10/02)<3R-<3α(R*),4β>>-1-(2,4-dimethoxybenzyl)-3-(1-hydroxyethyl)-4-acetoxy-2-azetidinone
(3R,4R)-4-acetoxy-3-[(R)-1-(t-butyldimethylsilyloxy)ethyl]-1-trimethylsilyl-2-azetidinone
(2R,3R)-N-2,4-dimethoxybenzyl-N-bis(ethoxycarbonyl)methyl-2-bromo-3-acetoxybutylamide
<3S(R)>-1-(2,4-dimethoxybenzyl)-3-(1-acetoxyethyl)-4,4-bis(ethoxycarbonyl)-2-azetidinone
<3S-<3α(S*),4α>>-1-(2,4-dimethoxybenzyl)-3-(1-acetoxyethyl)-4-ethoxycarbonyl-2-azetidinone-4-carboxylic acid
p-nitrobenzyl (5R,6S)-2-<<2-<<<(p-nitrobenzyl)oxy>carbonyl>amino>ethyl>thio>-6-<(R)-1-hydroxyethyl>carbapen-2-em-3-carboxylate
p-nitrobenzyl (5R,6S)-6-<(R)-1-<(tert-butyldimethylsilyl)oxy>ethyl>-3-<<2-<<<(p-nitrobenzyl)oxy>carbonyl>-amino>ethyl>thio>-7-oxo-1-azabicyclo<3.2.0>hept-2-ene-2-carboxylate
3(S)-<1(R)-<(tert-butyldimethylsilyl)oxy>ethyl>-4(R)-<<<<2-<<(p-nitrobenzyloxy)carbonyl>amino>ethyl>thio>carbonyl>methyl>azetidin-2-one
[(2R,3S)-3-((R)-1-Hydroxy-ethyl)-4-oxo-azetidin-2-yl]-thioacetic acid S-[2-(4-nitro-benzyloxycarbonylamino)-ethyl] ester
(5R,6S)-6-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-3-isopropylsulfanyl-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester