Borrelidins C-E: New antibacterial macrolides from a saltern-derived halophilic Nocardiopsis sp.

Jungwoo Kim, Daniel Shin, Seong Hwan Kim, Wanki Park, Yoonho Shin, Won Kyung Kim, Sang Kook Lee, Ki Bong Oh, Jongheon Shin, Dong Chan Oh

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

Chemical investigation of a halophilic actinomycete strain belonging to the genus Nocardiopsis inhabiting a hypersaline saltern led to the discovery of new 18-membered macrolides with nitrile functionality, borrelidins C-E (1-3), along with a previously reported borrelidin (4). The planar structures of borrelidins C-E, which are new members of the rare borrelidin class of antibiotics, were elucidated by NMR, mass, IR, and UV spectroscopic analyses. The configurations of borrelidines C-E were determined by the interpretation of ROESYNMRspectra, J-based configuration analysis, a modified Mosher's method, and CD spectroscopic analysis. Borrelidins C and D displayed inhibitory activity, particularly against the Gram-negative pathogen Salmonella enterica, and moderate cytotoxicity against the SNU638 and K562 carcinoma cell lines.

Original languageEnglish
Article number166
JournalMarine Drugs
Volume15
Issue number6
DOIs
Publication statusPublished - Jun 2017

Bibliographical note

Publisher Copyright:
© 2017 by the authors.

Keywords

  • Antibacterial
  • Borrelidin
  • Halophilic actinomycetes
  • Salmonella enterica
  • Saltern

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