Synthesis of New Furobenzoxazole and Furoflavone Derivatives

Abstract

<jats:title>Abstract</jats:title><jats:p>The synthesis of visnaginone-oxime (2 a) and khellinone-oxime (2 b) is reported. Beckmann rearrangement of 2 a and 2b using different cyclising agents was studied. Structure assignement for the produced benzoxazole derivatives and benzisoxazole derivatives was confirmed by chemical and spectral evidences. Utilization of visnaginone (la) and khellinone (lb) for the synthesis of new furoflavone derivatives was also undertaken.</jats:p>