Cyproheptadine → HCID 59216388, compound

Participants

Reaction Conditions

Reaction Steps

2-[3-(5-Amino-1-methyl-6-oxo-1,6-dihydro-pyridin-3-yl)-2-hydroxymethyl-phenyl]-6-dimethylamino-3,4-dihydro-2H-isoquinolin-1-one (40 mg, 0.095 mmol) was placed in a mixture of 1.5 ml dioxane and 0.5 ml of ethanol. To this mixture was added cyano-acetic acid 2,5-dioxo-pyrrolidin-1-yl ester, at first 1 equivalent (17.4 mg, 0.095 mmol), and then over a period of 3 days 5 more equivalents of this reagent at 2-4 hours intervals. During this time the reaction mixture was heated at 50-60° C. After cooling, the reactin mixture was diluted with ethylacetate, washed with brine, dried over sodium sulfate and concentrated in vacuo. The residue was purified by Prep TLC with 5% methanol in dichloromethylene to afford 12 mg (26% yield) of 2-Cyano-N-{5-[3-(6-dimethylamino-1-oxo-3,4-dihydro-1H-isoquinolin-2-yl)-2-hydroxymethyl-phenyl]-1-methyl-2-oxo-1,2-dihydro-pyridin-3-yl}-acetamide.

Provenance & Evidence