<![CDATA[Erythrina plants, locally known as âdadap ayamâ, are higher plant species and have been used as a folk medicine for treatment of cancer. To prove the effectiveness of the leaves and stem bark of E. variegata as an anti-cancer agent, the assay in this research was focused on in vitro  test  towards  breast  cancer  cell  T47D.  In  the course  of  our  continuing  search  for novel anti-cancer agent from Erythrina plants, the methanol extract of the leaves and stem bark of  E. variegata  showed  significant  anti-cancer  activity  against  breast  cancer  cell  T47D  in  vitro  using the Sulphorhodamine B (SRB) assay. By using the anti-cancer activity to follow the separations, the methanol extract was separated by combination of column chromatography. The chemical structure  of  an  anti-cancer  compounds  were  determined  on  the  basis  of  spectroscopic evidence  and  comparison  with  the  previously  reported  and  identified  as  an  erythrina  alkaloid (1)  and  isoflavonoid  (2).  Compounds  (1-2)  showed  anti-cancer  activity  against  breast  cancer cell  T47D  used  with  IC50  of   1.0  and  3.3  µg/mL,  respectively.  This  results  strongly  suggested that E. variegata is promising sources for anti-cancer agents.Keywords: Anti-cancer, Erythrina variegata, Leguminoseae]]>
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