ABSTRACT A series of novel oxazole-pyrimidines 6a, 6b, 8, 19a, 19b, 19c, 27a and 27b as well as pyrimido-oxazines 11, 24a, and 24b are synthesized from applying unsaturated-, active-, and resonance stabilized phosphonium salts to violuric acid in alkaline medium. The effects of the new compounds on the central nervous system (CNS) were evaluated pharmacologically in mice.
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