6-(2-Hydroxy-benzyl)-5-{hydroxy-[4-(2-piperidin-1-yl-ethoxy)-phenyl]-methyl}-naphthalen-2-ol → 13-[4-(2-Piperidin-1-yl-ethoxy)-phenyl]-7,13-dihydro-12-oxa-benzo[4,5]cyclohepta[1,2-a]naphthalen-3-ol

Participants

Reaction Steps

Dissolve 6-(2-hydroxy-benzyl)-5-{hydroxy-[4-(2-piperidin-1-yl-ethoxy)-phenyl]-methyl}-naphthalen-2-ol (80 mg, 0.17 mmol) in HCl solution (20% 1M aq. HCl in THF). Stir at r.t. for 2 h and warm gently for 10 min. Dilute with CH2Cl2, wash with sat. NaHCO3, water and brine, dry over MgSO4, filter and concentrate. Purify the crude product by flash chromatography (0-5% (2M NH3 in MeOH)/CH2Cl2) to afford 13-[4-(2-piperidin-1-yl-ethoxy)-phenyl]-7,13-dihydro-12-oxa-benzo[4,5]cyclohepta[1,2-a]naphthalen-3-ol (43 mg, 56%).

Provenance & Evidence