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Sunday, 12 April 2015

Hispidacine, an unusual 8,4′-oxyneolignan-alkaloid with vasorelaxant activity, and hispiloscine, an antiproliferative phenanthroindolizidine alkaloid, from Ficus hispida Linn.

Volume 109, January 2015, Pages 96–102

Hispidacine, an unusual 8,4′-oxyneolignan-alkaloid with vasorelaxant activity, and hispiloscine, an antiproliferative phenanthroindolizidine alkaloid, from Ficus hispida Linn.


Highlights

An 8,4′-oxyneolignan incorporating 2-hydroxyethylamine was isolated from F. hispida.
An acetoxy-substituted phenanthroindolizidine alkaloid was isolated from F. hispida.
Hispidacine induced vasorelaxation in rat isolated aorta.
Hispiloscine showed significant cytotoxicity against breast, lung and colon cancer cells.

Abstract

Hispidacine, an 8,4′-oxyneolignan featuring incorporation of an unusual 2-hydroxyethylamine moiety at C-7, and hispiloscine, a phenanthroindolizidine alkaloid, were isolated from the stem-bark and leaves of the Malaysian Ficus hispida Linn. Their structures were established by spectroscopic analysis. Hispidacine induced a moderate vasorelaxant activity in rat isolated aorta, while hispiloscine showed appreciable antiproliferative activities against MDA-MB-231, MCF-7, A549, HCT-116 and MRC-5 cell lines.

Graphical abstract

Phytochemical investigation of a Malaysian sample of Ficus hispida Linn. led to isolation of an unusual 8,4′-oxyneolignan-alkaloid, hispidacine, and two phenanthroindolizidine alkaloids, hispiloscine and (+)-deoxypergularinine. Hispidacine induced vasorelaxant activity in rat aorta, while hispiloscine showed antiproliferative activities against four human cancer cell lines.
Full-size image (17 K)

Keywords

  • Ficus hispida;
  • Moraceae;
  • Alkaloids;
  • Neolignans;
  • Phenanthroindolizidine;
  • NMR;
  • Antiproliferation;
  • Vasorelaxation

Corresponding author. Tel.: +60 3 89248208; fax: +60 3 89248018.