反应详情

3-carbomethoxy-β-carboline or a derivative thereof (J in Scheme VII above) is dissolved in a polar solvent (e.g., THF), and a reducing agent (e.g., NaBH4) is added to the solution. The mixture is stirred for a few hours and cooled. An excess of water is then added, and the mixture is stirred for another few hours. The solvent is thereafter evaporated and the resulting residue is dissolved in water, washed several times with one or more non-polar solvents such as dichloromethane and ethyl acetate, and the combined organic extracts are then evaporated. The remaining residue is purified by column chromatography (e.g., on a silica gel with elution by a 9:1 mixture of ethylacetate and methanol), to give a 3-hydroxymethyl-β-carboline intermediate.

1. temperaturecooled
2. stirringthe mixture is stirred for another few hours
3. customThe solvent is thereafter evaporated
4. dissolutionthe resulting residue is dissolved in water
5. washwashed several times with one or more non-polar solvents such as dichloromethane and ethyl acetate
6. customthe combined organic extracts are then evaporated
7. customThe remaining residue is purified by column chromatography (e.g.
8. washon a silica gel with elution
9. additionby a 9:1 mixture of ethylacetate and methanol),