Synthesis and evaluation of cyclopentane-based muraymycin analogs targeting MraY.

Journal Article (Journal Article)

Antibiotic resistance is one of the most challenging global health issues and presents an urgent need for the development of new antibiotics. In this regard, phospho-MurNAc-pentapeptide translocase (MraY), an essential enzyme in the early stages of peptidoglycan biosynthesis, has emerged as a promising new antibiotic target. We recently reported the crystal structures of MraY in complex with representative members of naturally occurring nucleoside antibiotics, including muraymycin D2. However, these nucleoside antibiotics are synthetically challenging targets, which limits the scope of medicinal chemistry efforts on this class of compounds. To gain access to active muraymycin analogs with reduced structural complexity and improved synthetic tractability, we prepared and evaluated cyclopentane-based muraymycin analogs for targeting MraY. For the installation of the 1,2-syn-amino alcohol group of analogs, the diastereoselective isocyanoacetate aldol reaction was explored. The structure-activity relationship analysis of the synthesized analogs suggested that a lipophilic side chain is essential for MraY inhibition. Importantly, the analog 20 (JH-MR-23) showed antibacterial efficacy against Staphylococcus aureus. These findings provide insights into designing new muraymycin-based MraY inhibitors with improved chemical tractability.

Full Text

Duke Authors

Cited Authors

  • Kwak, S-H; Lim, WY; Hao, A; Mashalidis, EH; Kwon, D-Y; Jeong, P; Kim, MJ; Lee, S-Y; Hong, J

Published Date

  • April 5, 2021

Published In

Volume / Issue

  • 215 /

Start / End Page

  • 113272 -

PubMed ID

  • 33607457

Pubmed Central ID

  • 33607457

Electronic International Standard Serial Number (EISSN)

  • 1768-3254

Digital Object Identifier (DOI)

  • 10.1016/j.ejmech.2021.113272

Language

  • eng

Conference Location

  • France