A bioassay-guided fractionation of the active chloroform extracts of the rhizomes of Zingiber cassumunar Roxb. led to the isolation of a potential cytotoxic principle, curcumin (1), along with two inactive compounds, (E)-4-(3',4'-dimethoxyphenyl)but-3...
A bioassay-guided fractionation of the active chloroform extracts of the rhizomes of Zingiber cassumunar Roxb. led to the isolation of a potential cytotoxic principle, curcumin (1), along with two inactive compounds, (E)-4-(3',4'-dimethoxyphenyl)but-3-en-l-ol (2) and (E)-4-(3',4'-dimethoxyphenyl)but-3-en-l-yl acetate (3). Curcumin (1) showed a significant cytotoxicity against several human cancer cell lines (Col2; 2.30, A549; 12.30, SNU638; IC_(50) 18.80㎍/㎖).