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

6-(5-ethylthiophen-2-yl)-1-fluoro-3,10-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6H-benzo[5,6][1,3]oxazino[3,4-a]indole

3,10-dibromo-6-(5-cyclopropylthiophen-2-yl)-1-fluoro-12,12a-dihydro-6H-benzo[5,6][1,3]oxazino[3,4-a]indole