6533b7ddfe1ef96bd1275290

RESEARCH PRODUCT

Total Synthesis of (-)-Oxycodone via Anodic Aryl-Aryl Coupling.

Maximilian SeltSiegfried R. WaldvogelDorota FerencAlexander LippDieter SchollmeyerTill Opatz

subject

010405 organic chemistrySinglet oxygenArylOrganic ChemistryTotal synthesis010402 general chemistryElectrochemistry01 natural sciencesBiochemistryCombinatorial chemistryCycloaddition0104 chemical sciencesHydroxylationchemistry.chemical_compoundchemistryNucleophilic substitutionPhysical and Theoretical ChemistryConjugate

description

A fully regio- and diastereoselective electrochemical 4a–2′-coupling of a 3′,4′,5′-trioxygenated laudanosine derivative enables the synthesis of the corresponding morphinandienone. This key intermediate is further transformed into (−)-oxycodone through conjugate nucleophilic substitution for E-ring closure and [4 + 2] cycloaddition with photogenerated singlet oxygen to accomplish diastereoselective hydroxylation at C-14. The anodic transformation provides high yields and can be performed under constant current conditions both in a simple undivided cell or in continuous flow.

10.1021/acs.orglett.9b00419https://pubmed.ncbi.nlm.nih.gov/30775928