1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → N-(5-(4-(4-amino-5-chloro-2-methoxybenzoylaminomethyl)piperidin-1-yl)pentyl)-1-methyl-1 H-indazole-3-carboxamide

Temperature

0 °C

4-Amino-N-(1-(5-aminopentyl)piperidin-4-ylmethyl)-5-chloro-2-methoxybenzamide (0.53 g) was dissolved in dimethylformamide (20 ml). 1-Methylindazole-3-carboxylic acid (0.27 g) and 1-hydroxybenzotriazole (0.25 g) were added, and the mixture was stirred at 0° C. for 15 min. Then, 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (0.35 g) was added, and the mixture was stirred at room temperature for 16 hr. The reaction mixture was concentrated under reduced pressure. Aqueous potassium carbonate solution was added to the residue and the mixture was extracted with ethyl acetate. The extract was dried over magnesium sulfate and concentrated under reduced pressure. The obtained residue was purified by silica gel chromatography to give 0.20 g of N-(5-(4-(4-amino-5-chloro-2-methoxybenzoylaminomethyl)piperidin-1-yl)pentyl)-1-methyl-1 H-indazole-3-carboxamide.

1. stirringthe mixture was stirred at room temperature for 16 hr
2. concentrationThe reaction mixture was concentrated under reduced pressure
3. additionAqueous potassium carbonate solution was added to the residue
4. extractionthe mixture was extracted with ethyl acetate
5. dry with materialThe extract was dried over magnesium sulfate
6. concentrationconcentrated under reduced pressure
7. customThe obtained residue was purified by silica gel chromatography

ORD record

ord-b2fd024940104ae1a0b3ed8c078edffc

Source dataset

uspto-grants-1999_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05864039