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Paper | Regular issue | Vol 24, No. 9, 1986, pp.2471-2477
Published online, 1st January, 1970
DOI: 10.3987/R-1986-09-2471
Reaction of Rotenoids with Hydrazine

Ivanka Kostova,* Nadejda Spassovska, Lilyana Maneva, Evgeni Golovinsky, and Iliya Ognyanov

*Centre of Ohyrochemistry, Institute of Organic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

Abstract

The preparation and the structure of the rotenoid hydrazones is discussed. The normal hydrazones, prepared in acidic medium, retain the original rotenoid skeleton (6aβ,12aβ,5’β). The so-called isohydrazones, obtained in alkaline medium, are derivatives of the [1]benzopyrano[3,4-c]pyrazole ring system with cis B/C-rings juncture.