Chemoenzymatic Formal Total Synthesis of (-)-Bestatin

Document Type

Article

Publication Date

1-1-2005

Publication Title

Tetrahedron: Asymmetry

DOI

10.1016/j.tetasy.2005.08.022

ISSN

0957-4166

Abstract

A highly stereoselective, enzymatic reduction of an α-chloro-β-keto ester provided the key intermediate for a total synthesis of the α-hydroxy-β-amino acid moiety of (−)-bestatin. The reduction product was cyclized to a glycidic ester that was opened in a Ritter reaction with benzonitrile, affording a trans-oxazoline, which was hydrolyzed under acidic conditions to the target molecule.

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