Abstract An exchange hydrogenation reaction on trioxsalen yields two isomeric dihydro analogues for which a combined HPLC-supercritical fluid chromatography method supplies purified materials. These reduced compounds and a related benzodipyranone are biologically active and inhibit the binding of epidermal growth factor on HeLa cells to an even greater extent than trioxsalen. This observation suggests a non-DNA target may play ...
![2,5,9-trimethyl-2,3-dihydrofuro[3,2-g]chromen-7-one Structure](https://image.chemsrc.com/caspic/214/21902-10-3.png)
