Synthesis of Benzhydryl 7-Amino-3-(hydroxymethyl)-8-oxo-5- thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
WANG Ge, CAO Xiao-Hui, YU Liang, CHEN Li-Gong
Acta Chimica Sinica . 2011, (13): 1589 -1591 . 

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