The condensation of 6,7-dimethoxy-2-tetralone (I) with methoxyamine (II) by means of NaOH in refluxing water gives 6,7-dimethoxy-2-(methoxyimino)-1,2,3,4-tetrahydronaphthalene (III), which is reduced with borane in THF yielding 2-amino-6,7-dimethoxy-1,2,3,4-tetrahydronaphthalene (IV). Finally, this compound is reductocondensed with 1-(3,4-dihydroxyphenyl)-2-propanone (V) by means of sodium cyanoborohydride in methanol, followed by a desmethylation with dry HCl in CHCl3.