OCTAHYDRO-2H-1,4-BENZOXAZINE

Octahydro-2H-1,4-benzoxazine is used as a reactant in the preparation of substituted piperazines, [1,4]diazepines, and 2,5-diazabicyclo[2.2.1]heptanes as histamine H1 and/or H3 antagonists or histamine H3 reverse antagonists.