Asymmetric Synthesis of Heterocyclic Analogues of a CGRP Receptor Antagonist for Treating Migraine

Org Lett. 2015 Dec 18;17(24):5982-5. doi: 10.1021/acs.orglett.5b02921. Epub 2015 Dec 9.

Abstract

An asymmetric synthesis of novel heterocyclic analogue of the CGRP receptor antagonist rimegepant (BMS-927711, 3) is reported. The cycloheptane ring was constructed by an intramolecular Heck reaction. The application of Hayashi-Miyaura and Ellman reactions furnished the aryl and the amine chiral centers, while the separable diastereomeric third chiral center alcohols led to both carbamate and urea analogues. This synthetic approach was applicable to both 6- and 5-membered heterocycles as exemplified by pyrazine and thiazole derivatives.

MeSH terms

  • Calcitonin Gene-Related Peptide Receptor Antagonists*
  • Cycloheptanes / chemical synthesis*
  • Cycloheptanes / chemistry
  • Cycloheptanes / pharmacology*
  • Migraine Disorders / drug therapy*
  • Molecular Structure
  • Piperidines / chemical synthesis*
  • Piperidines / chemistry
  • Piperidines / pharmacology*
  • Pyridines / chemical synthesis*
  • Pyridines / chemistry
  • Pyridines / pharmacology*
  • Stereoisomerism

Substances

  • Calcitonin Gene-Related Peptide Receptor Antagonists
  • Cycloheptanes
  • Piperidines
  • Pyridines
  • rimegepant sulfate