Triethylamine → 5-{(8-ethyl-4H-benzo[1,3]dioxin-6-yl)-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylamino]methyl}-2-pyrimidin-2-yl-2,4-dihydro-[1,2,4]triazol-3-one

온도

85 °C

To a solution of 101 mg of [2-(8-ethyl-4H-benzo[1,3]dioxin-6-yl)-2-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylimino]-1-methylsulfanylethylidene]carbamic acid methyl ester in 2 ml of DMF there were added 21 mg of 2-hydrazinopyrimidine and 50 μl of triethylamine, and the mixture was stirred overnight at 85° C. under a nitrogen atmosphere. The reaction mixture was concentrated, and the residue was dissolved in 3 ml of methanol and 0.3 ml of acetic acid. After adding 200 mg of sodium cyanotrihydroborate to the solution, the mixture was stirred at room temperature for 1 hour. Water was added to the reaction mixture and extraction was performed with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate. The desiccating agent was filtered off and the filtrate was concentrated under reduced pressure. The residue was purified by NAM silica gel column chromatography (methanol-ethyl acetate) to give 5-{(8-ethyl-4H-benzo[1,3]dioxin-6-yl)-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylamino]methyl}-2-pyrimidin-2-yl-2,4-dihydro-[1,2,4]triazol-3-one.

1. concentrationThe reaction mixture was concentrated
2. dissolutionthe residue was dissolved in 3 ml of methanol
3. additionAfter adding 200 mg of sodium cyanotrihydroborate to the solution
4. stirringthe mixture was stirred at room temperature for 1 hour
5. additionWater was added to the reaction mixture and extraction
6. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
7. filtrationThe desiccating agent was filtered off
8. concentrationthe filtrate was concentrated under reduced pressure
9. customThe residue was purified by NAM silica gel column chromatography (methanol-ethyl acetate)

ORD 기록

ord-c99117649fb743ee83731cfa99b8ecd4

출처 데이터셋

uspto-grants-2010_10

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US07816522B2