7-(1-Hydroxyethyl)-8-oxo-3-oxa-1-azabicyclo[4.2.0]octanespiro-2-cyclohexane has been elaborated to provide appropriately substituted thioester-phosphoranes; these have been cyclised via an intramolecular Wittig reaction and the products deprotected to furnish (±)-MM-22383 and (±)-N-acetyldehydrothienamycin.
R. J. Ponsford and R. Southgate, J. Chem. Soc., Chem. Commun., 1980, 1085 DOI: 10.1039/C39800001085
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