A series of 1-aminoalkylisoquinoline-4-carboxylates (9) was synthesized by
acylation of an appropriate phenethylamine derivative (4) with a phthaloyl-
protected amino acid (5) followed by a Bischler-Napieralski cyclization and
oxidation. N-Alkyl analogs 16 were prepared by reaction of the 1-chloromet
hylisoquinoline 12 with an alkylamine.