Return to Article Details HETEROCYCLES CONTAINING NITROGEN AND SULFUR. PART 49. SYNTHESIS OF DERIVATIVES OF NEW HETEROCYCLIC SYSTEMS: 1,2-DIOXOCYCLOPENTA(HEXA)[<i>g</i>]OXAZOLIDINO[3,2-<i>f</i>]PYRIMIDO[4,5-<i>b</i>][1,4]THIAZINE, 1,2-DIOXOCYCLOPENTA(HEXA)[<i>g</i>]IMIDAZOLIDINO[3,2-<i>f</i>]PYRIMIDO[4,5-<i>b</i>][1,4]THIAZINE, AND 1,2-OXAZINO[5,4-<i>g</i>]PYRIMIDINO[4,5-<i>b</i>][1,4]THIAZINE Download Download PDF