Vitex peduncularis

Tetronitroopigenins, C HjO, (NOj >4, mw 450.23, N 12.45%. One isomer nitTO-4, 5,7-trihydroxyflavone, nearly col ndls, mp 243—4°(dec), diff sol in common solvents, is described in Refs 1—3. Can be prepd by nitrating apigenin with mixed nitricsulfuric acid. Its expl props were not investigated A coropd of rap 258°, described in Ref 4> was prepd by heating with 20% HNOj the brn-red vitexin(Ref 4), CisH,40, obtd from air-dried and powdered bark of Vitex peduncularis Refs l)Beil 18,184 2)A.G.Perkin,JCS 73, 1025(1898) 3)Ibid, 77,4 20(1900) 4)G.Barger, JCS 8911,1222(1906) 5)V.N.Sharma,JSciIndRe-search(India)14B,267(1955) CA 50,5649(1956)... 

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