Solid-phase synthesis of short Î ±-helices stabilized by the hydrogen bond surrogate approach

Anupam Patgiri, Monica Z. Menzenski, Andrew B. Mahon, Paramjit S. Arora

Research output: Contribution to journalArticlepeer-review


Stabilized Î ±-helices and nonpeptidic helix mimetics have emerged as powerful molecular scaffolds for the discovery of proteing-protein interaction inhibitors. Protein-protein interactions often involve large contact areas, which are often difficult for small molecules to target with high specificity. The hypothesis behind the design of stabilized helices and helix mimetics is that these medium-sized molecules may pursue their targets with higher specificity because of a larger number of contacts. This protocol describes an optimized synthetic strategy for the preparation of stabilized Î ±-helices that feature a carbon-carbon linkage in place of the characteristic N-terminal main-chain hydrogen bond of canonical helices. Formation of the carbon-carbon bond is enabled by a microwave-assisted ring-closing metathesis reaction between two terminal olefins on the peptide chain. The outlined strategy allows the synthesis and purification of a hydrogen bond surrogate (HBS) Î ±-helix in ĝ̂1/41 week.

Original languageEnglish (US)
Pages (from-to)1857-1865
Number of pages9
JournalNature Protocols
Issue number11
StatePublished - Oct 2010

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology


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