Synthetic and biological studies on natural cyclic heptapeptide: segetalin E

Arch Pharm Res. 2007 Nov;30(11):1380-6. doi: 10.1007/BF02977360.

Abstract

Present investigation describes the first total synthesis of a proline-rich cyclic peptide segetalin E (8) by solution phase technique. The chemical structure of the compound was elucidated by FT-IR, 1H-NMR, 13C-NMR, FAB-MS spectral data and elemental analyses. The newly synthesized peptide was subjected to pharmacological screening and found to exhibit high cytotoxicity against Dalton's lymphoma ascites (DLA) and Ehrlich's ascites carcinoma (EAC) cell lines with IC50 values of 3.71 and 9.11 microM, in addition to good anthelmintic activity against earthworms M. konkanensis and P. corethruses at a dose of 2 mg/mL.

MeSH terms

  • Animals
  • Anthelmintics / chemical synthesis*
  • Anthelmintics / pharmacology
  • Antifungal Agents / chemical synthesis*
  • Antifungal Agents / pharmacology
  • Antineoplastic Agents / chemical synthesis*
  • Antineoplastic Agents / pharmacology
  • Cell Line, Tumor
  • Mice
  • Peptides, Cyclic / chemical synthesis*
  • Peptides, Cyclic / pharmacology

Substances

  • Anthelmintics
  • Antifungal Agents
  • Antineoplastic Agents
  • Peptides, Cyclic
  • segetalin E