반응 #303140

반응 방정식

potassium tert-butoxide

4-Bromobutanoyl chloride

8-(5-amino-3-methylpyridin-2-yl)-2-(cis-4-hydroxycyclohexyl)-2,8-diazaspiro[4.5]decan-1-one

→

2-(cis-4-hydroxycyclohexyl)-8-[3-methyl-5-(2-oxopyrrolidin-1-yl)pyridin-2-yl]-2,8-diazaspiro[4.5]decan-1-one

용매

tetrahydrofuran

dichloromethane

반응 조건

후처리

1. 1
   workup.STIRRINGThe mixture was stirred for an additional hour
2. 2
   기타The solvent was evaporated
3. 3
   workup.DISSOLUTIONThe residue was dissolved in methanol (1.8 mL)
4. 4
   기타purified by prep.-HPLC under basic condition

실험 절차

4-Bromobutanoyl chloride (13.0 μL) was added to a mixture of 8-(5-amino-3-methylpyridin-2-yl)-2-(cis-4-hydroxycyclohexyl)-2,8-diazaspiro[4.5]decan-1-one (18.0 mg) and 4-dimethylaminopyridine (14.5 mg) in dichloromethane (1.0 mL). The mixture was stirred for 3 h. Then potassium tert-butoxide in tetrahydrofuran (1.0 M, 0.20 mL) was added. The mixture was stirred for an additional hour. The solvent was evaporated. The residue was dissolved in methanol (1.8 mL), and purified by prep.-HPLC under basic condition to afford 2-(cis-4-hydroxycyclohexyl)-8-[3-methyl-5-(2-oxopyrrolidin-1-yl)pyridin-2-yl]-2,8-diazaspiro[4.5]decan-1-one. LCMS: (M+H)+=427.20.

출처