181271-32-9
4-bromo-1-(4-toluenesulfonyl)indole-3-carboxaldehyde
→
1159774-77-2
(6aR,10aS)-4,7-di-tert-butyl 9-methyl 6,6a-dihydroindolo[4,3-fg]quinoline-4,7,9(8H,10aH)-tricarboxylate