3,10-dibromo-6-(5-chlorothiophen-2-yl)-6H-benzo[5,6][1,3]oxazino[3,4-a]indole

3,10-dibromo-6-(4-methylthiazol-2-yl)-6H-benzo[5,6][1,3]oxazino[3,4-a]indole

3,10-dibromo-12-chloro-6-(4-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazin-7-yl)-6H-benzo[5,6][1,3]oxazino[3,4-a]indole

3,10-dibromo-12-chloro-6-phenethyl-6H-benzo[5,6][1,3]oxazino[3,4-a]indole