Abstract: | Summary From the stems of the cotton plant infected with the fungusVerticillium dahliae Kleb. has been isolated a quinone derivative of hemigossypol — hemigossypolone — for which the structure 8-formyl-6,7-dihydroxy-5-isopropyl-3-methyl-1,4-naphthoquinone is proposed, and its fungitoxicity has been determined.Division of Bioorganic Chemistry of the Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 341–344, May–June, 1977. |