Largamides A-H, unusual cyclic peptides from the marine cyanobacterium Oscillatoria sp.

  title={Largamides A-H, unusual cyclic peptides from the marine cyanobacterium Oscillatoria sp.},
  author={A. Plaza and C. Bewley},
  journal={The Journal of organic chemistry},
  volume={71 18},
Seven new depsipeptides, termed largamides A-G (1-7), and one new cyclic peptide, largamide H (8), have been isolated from the marine cyanobacterium Oscillatoria sp. Their structures were determined by NMR and ESI-MS techniques. The absolute configurations were assigned using LC-MS, chiral HPLC, and combined analysis of homonuclear and heteronuclear (2,3)J couplings, along with ROE data. Largamides, isolated from a single homogeneous cyanobacterial collection, represent three different… Expand
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