Development of a Direct Photocatalytic C-H Fluorination for the Preparative Synthesis of Odanacatib

Org Lett. 2015 Nov 6;17(21):5200-3. doi: 10.1021/acs.orglett.5b02532. Epub 2015 Oct 20.

Abstract

Late-stage C-H fluorination is an appealing reaction for medicinal chemistry. However, the application of this strategy to process research appears less attractive due to the formation and necessary purification of mixtures of organofluorines. Here we demonstrate that γ-fluoroleucine methyl ester, an intermediate critical to the large-scale synthesis of odanacatib, can be accessed directly from leucine methyl ester using a combination of the decatungstate photocatalyst and N-fluorobenzenesulfonimide in flow. This efficient C-H fluorination reaction compares favorably with several generations of classical γ-fluoroleucine process syntheses.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biphenyl Compounds / chemical synthesis*
  • Biphenyl Compounds / chemistry
  • Cathepsin K / antagonists & inhibitors
  • Esters
  • Halogenation
  • Leucine / analogs & derivatives
  • Leucine / chemistry
  • Molecular Structure
  • Sulfonamides / chemistry

Substances

  • Biphenyl Compounds
  • Esters
  • Sulfonamides
  • leucine methyl ester
  • N-fluorobenzenesulfonimide
  • Cathepsin K
  • Leucine
  • odanacatib