Investigation of the products of the oxidation of gossypol structure of gossindan

A new compound, which we have called gossindan, has been isolated from the products of the oxidation of gossypol by oxygen in an alkaline medium. The structure of gossindan has been established on the basis of a study of IR, mass, PMR, and13C NMR spectra and x-ray structural analysis as 6,6′-di-(2,7-dihydroxy-3-isopropyl-5-methylindan-1-one).