Journal of Heterocyclic Chemistry p. 739 - 740 (1989)
Update date:2022-07-30
Topics:
Matyus
Szalay
Kasztreiner
Jerkovich
Rabloczky
Synthesis of derivatives 4 and 6 of two novel tricyclic ring systems, 1,2,4-triazolo[3,4-c]pyrimido[5,4-b][1,4]oxazine and imidazo[1,2-c]pyrimido[5,4-b][1,4]oxazine, respectively is described. Although the parent pyrimido[5,4-b]oxazines possess positive i
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