Figure 2.

RP-HPLC analysis of products 1-3 and BCP formed by autoxidation of curcumin in the presence of βME. The reaction was conducted, extracted, and analyzed as described in “Experimental Procedures”. Elution of the products was monitored using a diode array detector, and the chromatogram shown was recorded at UV235 nm. BCP, bicyclopentadione.