allyl(4R,5S,6S)-3-[(4-{(6S)-1-[(allyloxy)carbonyl]-6-methyl-1,2,5,6-tetrahydro-3-pyridinyl}-1,3-thiazol-2-yl)sulfanyl]-4-methyl-7-oxo-6-{(1R)-1-[(trimethylsilyl)oxy]ethyl}-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate 以59%的产率得到(4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3-({4-[(6S)-6-methyl-1,2,5,6-tetrahydro-3-pyridinyl]-1,3-thiazol-2-yl}sulfanyl)-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid