ANTI-TUMOR PLANTS .9. STRUCTURAL REASSIGNMENTS FOR 3 FLAVONOIDS FROM LYCHNOPHORA-AFFINIS GARDN

In previous work, structures 1-5 were assigned to five flavonoids obtained from L. affinis (1). Interest in these compounds was stimulated by observations that some of them showed activity vs. the KB cell culture; our investigations of the background of such activity have recently been published (2). At the time (1), the structural assignments were made primarily on the basis of ultraviolet and mass spectra. During the course of structural determination of some other flavonoids in our laboratory, we reto be meta-related doublets (H-6 and H-8). © 1979, American Chemical Society. All rights reserved.