Phloroglucinol Derivatives with Protein Tyrosine Phosphatase 1B Inhibitory Activities from Eugenia jambolana Seeds

J Nat Prod. 2017 Feb 24;80(2):544-550. doi: 10.1021/acs.jnatprod.6b01073. Epub 2017 Jan 30.

Abstract

Fifteen new phloroglucinol derivatives, jamunones A-O (1-8 and 10-16, respectively), along with one known analogue spiralisone C (9), were isolated from Eugenia jambolana seeds. Their structures were elucidated by detailed nuclear magnetic resonance and mass spectrometry spectroscopic data interpretation. Compounds 1-9, 11, 12, and 14-16 inhibited protein tyrosine phosphatase 1B activity with IC50 values ranging from 0.42 to 3.2 μM.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • India
  • Inhibitory Concentration 50
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Phloroglucinol* / analogs & derivatives
  • Phloroglucinol* / isolation & purification
  • Phloroglucinol* / pharmacology
  • Protein Tyrosine Phosphatase, Non-Receptor Type 1 / antagonists & inhibitors*
  • Seeds / chemistry*
  • Syzygium / chemistry*

Substances

  • Phloroglucinol
  • PTPN1 protein, human
  • Protein Tyrosine Phosphatase, Non-Receptor Type 1