Hydrochloric Acid → HCID 89709503, compound

Participants

Reaction Conditions

Reaction Steps

To (4aSR*,5SR*,10bSR*)-ethyl-5-cyclohexyl-3,4,4a,5,6,10b-hexahydro-2H-pyrano[3,2-c]quinoline-9-carboxylate (Base of example 10, obtained according to example 1 procedure) (145 mg, 0.422 mmol) was added a 0.5 NaOH solution (6 mL, in MeOH/H2O 1:1) and the reaction mixture heated at 65° C. for 24 h. After cooling back to r.t., the reaction mixture was neutralized with 10% HCl solution. The product was extracted with AcOEt twice. The combined organic fractions were dried over Na2SO4 and the solvent removed under reduced pressure after filtration to afford (4aSR*,5SR*,10bSR*)-5-cyclohexyl-3,4,4a,5,6,10b-hexahydro-2H-pyrano[3,2-c]quinoline-9-carboxylic acid (92 mg, 69%).

Provenance & Evidence