A Concise Synthesis of (−)‐Oseltamivir

Tackling the supply problem: A short and efficient synthesis of (−)-oseltamivir has been developed which requires eight steps from commercially available starting material and proceeds with an overall yield of 30 %. Key transformations include a novel palladium-catalyzed asymmetric allylic alkylation reaction (Pd-AAA, see scheme) as well as a chemo-, regio-, and stereoselective aziridination reaction. Phth=phthaloyl.