Systemic structure–activity relationship study of phenyl polyyne diols as potential chemopreventive agents.

The present study reports the cancer chemopreventive activities of phenyl polyyne diols derived from polyacetylene triol. Thirty-seven analogues based on a 1-phenylhexa-2,4-diyne-1,6-diol scaffold were prepared and their effects on QR activity were elucidated, as well as their cytotoxicities. We found that most of the derivatives based on phenylhexa-2,4-diyne-1,6-diol exhibited good QR induction activity and relatively low cytotoxicity and systemic structure–activity relationship was revealed. In particular, 4-fluorophenyl, 3-chlorophenyl, and 3,4-dioxolophenyl derivatives showed the best profiles in terms of QR induction, cytotoxicity, and CI. [ABSTRACT FROM AUTHOR]