6-epi-Phenoxymethyl- and 6-epi-benzylpenicillin and their benzyl esters have been prepared by deoxygenation of the corresponding 6-epi-S-oxides. The latter are obtained by epimerisation of the sulphoxides with normal configuration. Various reaction conditions were investigated for this purpose.
P. Claes, A. Vlietinck, E. Roets, H. Vanderhaeghe and S. Toppet, J. Chem. Soc., Perkin Trans. 1, 1973, 932 DOI: 10.1039/P19730000932
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