The synthesis of phenoxazine derivatives and the isolation of natural phenoxazinones [1] have been a subject of continuing interest over the years due to the wide range of applications of these compounds. Notable among the natural products derived from phenoxazine ring skeleton are actinomycin [2] antibiotics isolated from streptomyces organisms, ommatin D [3], the redbrown pigment isolated from small tortoiseshell butterfly, Vanessa aurticae, the questiomycines [4-6] from Waksmania aerate and Pseudomonas iodinum and the cinnabarins [7,8] from wood-rotting fungi, Coriolus sanquineus and Trametes cinabarina. Apart from questiomycin and actinomycin antibiotics, which are notable for their antituberculosis and antitumor action, respectively. Most known phenoxazinones are pigments in their natural sources although some of them have been synthetically modified to be applicable as dyes [9-11]. In view of the reports [12-18] on the pharmacological activities of phenothiazines and phenoxazines, attention was shifted from their dyeing properties to a study of their biological activities. Phenothiazines and phenoxazines ring systems are vital component of various drugs used as antitumor agents,