HCID 69856072, compound → HCID 22639973, compound

Participants

Reaction Steps

To a solution of 600 mg (1.1 mmol) of 2-methyl-butyric acid 8-(2-[1-(3,4-dimethyoxy-benzyl)-4-hydroxy-6-oxopiperidin-2-yl]-ethyl)-3,7-dimethyl-1,2,3,7,8,8a-hexahydro-naphthalen-1-yl ester in 15 ml of THF at rt are added 2 ml of a 65% RedAl® solution in toluene. After 3 hours, the reaction is quenched by the addition of 1 ml of methanol. The organic phase is extracted twice with 15 ml of 2N HCl. The aqueous phases are combined, brought to pH 12 with 1N NaOH and extracted three times with ethyl acetate. The organic phases are combined, dried over sodium sulfate and the solvent evaporated. The residue is purified by silica gel chromatography (t-butyl methyl ether/methanol 9/1) to afford pure 1-(3,4-Dimethoxy-benzyl)-2-[2-(8-hydroxy-2,6-dimethyl-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl)-ethyl]-piperidin-4-ol as a white foam.

Provenance & Evidence