Bioactive Piperazic Acid-Bearing Cyclodepsipeptides, Lydiamycins E-H, from an Endophytic Streptomyces sp. Associated with Cinnamomum cassia

J Nat Prod. 2023 Apr 28;86(4):751-758. doi: 10.1021/acs.jnatprod.2c00902. Epub 2023 Feb 22.

Abstract

A chemical investigation of the endophytic Streptomyces sp. HBQ95, associated with the medicinal plant Cinnamomum cassia Presl, enabled the discovery of four new piperazic acid-bearing cyclodepsipeptides, lydiamycins E-H (1-4), and one known compound (lydiamycin A). Their chemical structures, including absolute configurations, were defined by a combination of spectroscopic analyses and multiple chemical manipulations. Lydiamycins F-H (2-4) and A (5) exhibited antimetastatic activity against PANC-1 human pancreatic cancer cells without significant cytotoxicity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cinnamomum aromaticum* / chemistry
  • Humans
  • Plants, Medicinal*
  • Pyridazines* / chemistry
  • Streptomyces* / chemistry

Substances

  • piperazic acid
  • Pyridazines