STUDIES ON THE STRUCTURE OF 1, 2, 4-TRIAZINE-3, 5-D IONE AND ITS DERIVATIVES

Ⅰ. INTRODUCTIONSince the 1970’s, the biological interest in the photochemistry of nucleic acid base systems has led chemists to actively investigate the photoaddition reactions of pyrimidine bases to various olefins. 1, 2, 4-Triazine-3, 5-dione itself exhibits antiviral activity and can be used as antitumor agent. A series of novel compounds with azacyclobutane were formed by using photocycloaddition of C = N double bond in 1, 2, 4-triazine-3, 5-dione(6-azauracil) to