Two new cytotoxic compounds, 2-[10(Z)-heptadecenyl]-1,4-hydroquinone (
1) and -heptadecenyl]-[10(Z)heptadecenyl]-2-cyclohexenone (2) have bee
n isolated from a MeOH extract of seeds of Tapirira guianensis. The st
ructures were established through spectral analysis of the isolates an
d their derivatives.