In vitro cytotoxic activity of abietane diterpenes from Peltodon longipes as well as Salvia miltiorrhiza and Salvia sahendica

Bioorg Med Chem. 2011 Aug 15;19(16):4876-81. doi: 10.1016/j.bmc.2011.06.067. Epub 2011 Jun 29.

Abstract

Phytochemical investigations of the n-hexane extract from the roots of Peltodon longipes (Lamiaceae) resulted in the isolation of 12 known abietane diterpenes (1-12). Structures were established on the basis of one and two dimensional nuclear magnetic resonance spectroscopic data ((1)H and (13)C, COSY, HSQC and HMBC), electron ionization mass spectrometric analysis (EIMS) as well as comparison with data from literature. These compounds, as well as eight known diterpenes (13-19) from Salvia miltiorrhiza, and two from Salvia sahendica (20 and 21) were evaluated for their cytotoxic effects in human pancreatic (MIAPaCa-2) and melanoma (MV-3) tumor cell lines using the MTT assay. Tanshinone IIa (13), 7α-acetoxyroyleanone (1), 1,2-dihydrotanshinone (16) and cryptotanshinone (14) had the highest cytotoxic effects in MIAPaCa-2, displaying IC(50) of 1.9, 4.7, 5.6, and 5.8 μM, respectively. Structure-activity relationships of abietane diterpenoid quinones are discussed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Abietanes / analysis
  • Abietanes / chemistry
  • Abietanes / isolation & purification
  • Abietanes / pharmacology*
  • Antineoplastic Agents, Phytogenic / analysis
  • Antineoplastic Agents, Phytogenic / chemistry
  • Antineoplastic Agents, Phytogenic / isolation & purification
  • Antineoplastic Agents, Phytogenic / pharmacology*
  • Cell Line, Tumor
  • Cytotoxins / chemistry
  • Cytotoxins / isolation & purification
  • Cytotoxins / pharmacology*
  • Drug Screening Assays, Antitumor
  • Humans
  • Lamiaceae*
  • Phytotherapy
  • Plant Extracts / analysis
  • Plant Extracts / chemistry
  • Plant Extracts / isolation & purification
  • Plant Extracts / pharmacology*
  • Plant Roots
  • Salvia*
  • Structure-Activity Relationship

Substances

  • Abietanes
  • Antineoplastic Agents, Phytogenic
  • Cytotoxins
  • Plant Extracts
  • tanshinone