Synthesis of Chiral cis-Cyclopropane Bearing Indole and Chromone as Potential TNFα Inhibitors

J Org Chem. 2018 Aug 3;83(15):7672-7682. doi: 10.1021/acs.joc.8b00466. Epub 2018 Jul 24.

Abstract

Conformationally restricted analogues of SPD-304, the first small-molecule TNFα inhibitor, in which two heteroaryl groups, indole and chromone, are connected by chiral methyl- or ethyl- cis-cyclopropane, were designed. Synthesis of these molecules was achieved via Suzuki-Miyaura or Stille coupling reactions with chiral bromomethylenecyclopropane or iodovinyl- cis-cyclopropane as the substrate, both of which were prepared from chiral methylenecyclopropane as a common intermediate, constructing the heteroaryl-methyl or -ethyl- cis-cyclopropane structures as key steps. This study presents an efficient synthesis of a series of chiral cis-cyclopropane conjugates with two heteroaryl groups.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chemistry Techniques, Synthetic
  • Chromones / chemistry*
  • Cyclopropanes / chemical synthesis*
  • Cyclopropanes / chemistry
  • Cyclopropanes / pharmacology*
  • Drug Design
  • Indoles / chemistry*
  • Stereoisomerism
  • Tumor Necrosis Factor-alpha / antagonists & inhibitors*

Substances

  • Chromones
  • Cyclopropanes
  • Indoles
  • Tumor Necrosis Factor-alpha