The title compounds were synthesised in 7 steps from 1,7-dihydroxynaphthalene as follows: 1,7-dihydroxynaphthalene was methylated and subjected to a Birch reduction to yield 8-methoxy-2-tetralone. Reductive amination with sodium cyanoboro[H-3]hydride and n-propylamine gave 8-methoxy-2-(n-propylamino)-[2-H-3]tetralin which was acylated and reduced to give (+/-) 8-methoxy-2-(N,N-dipropylamino)-[2-H-3]tetralin. Treatment with conc. HCl gave (+/-)-8-hydroxy-2-(N,N-dipropylamino)-[2-H-3]tetralin. The racemate was then resolved by chiral mobile phase chromatography.