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- W2066059290 abstract "The preparation of benzyl 6α- and 6β-phenoxyacetoxypenicillanate and their (S)- and (R)-S-oxides is described. No epimerisation was observed when benzyl 6α- or 6β-phenoxyacetoxypenicillanate or benzyl 6α- or 6β-trimethylsiloxypenicillanate was treated with 1,5-diazabicyclo[4.3.0]non-5-ene (DBN). Benzyl 6β-phenoxyacetoxypenicillanate (S)-S-oxide was transformed into the 6α-isomer with DBN as catalyst; the converse reaction was not observed. With both isomers in these experiments, the phenoxyacetoxy side chain was hydrolysed to a large extent." @default.
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- W2066059290 date "1976-01-01" @default.
- W2066059290 modified "2023-10-17" @default.
- W2066059290 title "Isomerisation of benzyl 6-phenoxyacetoxypenicillanates and their S-oxides" @default.
- W2066059290 doi "https://doi.org/10.1039/p19760000704" @default.
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