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

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

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

3,10-dibromo-6-(3,5-dimethoxyphenyl)-12-fluoro-6H-benzo[5,6][1,3]oxazino[3,4-a]indole

3-bromo-10,12-dichloro-6-(5-methylthiophen-2-yl)-6H-benzo[5,6][1,3]oxazino[3,4-a]indole