Asymmetric Total Synthesis of Fasicularin by Chiral N-Alkoxyamide Strategy

Organic Letters
Shio YamamotoNoritaka Chida

Abstract

The asymmetric total synthesis of fasicularin is reported. The key to success is the use of a chiral N-alkoxyamide to control both reactivity and stereoselectivity. This functional group enables the aza-spirocyclization and the reductive Strecker reaction, which cannot be realized with an ordinary amide. In addition, use of the chiral alkoxy group establishes two consecutive stereocenters in the aza-spirocyclization through remote stereocontrol.

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