Formal enantioselective syntheses of oseltamivir and tamiphosphor

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9 Citations (Scopus)


A new method for the synthesis of the influenza antiviral drugs oseltamivir and tamiphosphor starting from 4-hydroxycyclohexenone has been developed. Stereoselective aziridination of a protected 4-hydroxycyclohexenone was used as a key step and the aziridine formed was resolved enzymatically with a very high yield and enantiomeric excess. The subsequent conversion to oseltamivir and tamiphosphor diethyl ester in 10 or 12 additional steps and 22% or 19% yield from intermediate 7, respectively, is described.

Original languageEnglish
Pages (from-to)236-240
Number of pages5
JournalOrganic Chemistry Frontiers
Issue number2
Publication statusPublished - 1 Feb 2017


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