Reaktion #1177889

Reaktionsgleichung

8-Phenylmethoxy-3,4-dihydro-5-[2-hydroxy-3-(4-(isobutoxycarbonylamino)-1-piperidyl)propoxy]carbostyril

compound

8-Phenylmethoxy-3,4-dihydro-5-[2-hydroxy-3-(4-(isobutoxycarbonylamino)-1-piperidyl)propoxy]carbostyril

→

8-hydroxy-3,4-dihydro-5-[2-hydroxy-3-(4-(isobutoxycarbonylamino)-1-piperidyl)propoxy]carbostyril

Lösungsmittel

ethanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe catalyst was removed by filtration
2. 2
   Sonstigethe solvent evaporated
3. 3
   Sonstigeto give 100 mg of crude product which
4. 4
   Sonstigewas recrystallized from aqueous ethanol

Vorschrift

8-Phenylmethoxy-3,4-dihydro-5-[2-hydroxy-3-(4-(isobutoxycarbonylamino)-1-piperidyl)propoxy]carbostyril, the compound from Step A above (160 mg), was dissolved in ethanol (15 mL). Palladium (10% on carbon) was added, and the mixture was stirred under hydrogen at room temperature for 48 hours. The catalyst was removed by filtration, and the solvent evaporated to give 100 mg of crude product which was recrystallized from aqueous ethanol, yielding the title compound, 8-hydroxy-3,4-dihydro-5-[2-hydroxy-3-(4-(isobutoxycarbonylamino)-1-piperidyl)propoxy]carbostyril, m.p. 199°-200° C.

Quelle