Psilocin analogs having either a formyl group (9—12) or a bromine atom (13—18) at the 5-or 7-position have been prepared for the first time. Syntheses of 5-and 7-bromo derivatives of 4- hydroxy-(23, 24, 28) and 4-benzyloxyindole-3-carbaldehyde (19, 25, 29, 30), 4- benzyloxyindole-3-acetonitriles (20, 31), and 4-benzyloxy-N, N-dimethyltryptamine (32, 34, 35) have also been established.
