ANTHRAQUINONES FROM THE POLAR FRACTIONS OF GALIUM-SINAICUM

The new anthraquinones, 6,7-dimethoxy xanthopurpurin, 6-hydroxy-7-meth oxy rubiadin, 5-hydroxy-6-hydroxymethyl anthragallol 1,3-dimethyl ethe r, 7-carboxy anthragallol 1,3-dimethyl ether, anthragallol 1-methyl et her 3-O-beta-D-glucopyranoside, anthragallol 1-methyl ether 3-O-rutino side, anthragallol 3-O-rutinoside and alizarin 1-methyl ether 2-O-prim everoside were isolated from the CH2Cl2 and n-BuOH extracts of Galium sinaicum roots and their structures were established by various spectr oscopic techniques. In addition, two known anthraquinones were also is olated and fully characterized.