NOVEL ANTHRAQUINONES FROM UNDIFFERENTIATED CELL-CULTURES OF GALIUM-VERUM

Lines of callus of Galium verum established under a variety of culture conditions readily produced anthraquinones. Eight of the main pigment s were purified, of which six were compounds new to the species. Six w ere fully identified as: 1,3-dihydroxy-2 methoxymethyl, 1,3-dimethoxy- 2-hydroxy, 1,3-dihydroxy-2-acetoxy, 1-hydroxy-2- hydroxymethyl, 1,3-di hydroxy-2-methyl and 1-methoxy-2-hydroxyanthraquinones. The other two were provisionally identified as 1,3-dihydroxy-2-hydroxymethyl-6-metho xy and 1,6-dihydroxy-2-methylanthraquinones.