N-(2-Aminoethyl)piperidine → 7-methyl-4-oxo-N-[2-(piperidin-1-yl)ethyl]-1-(tetrahydro-2H-pyran-4-yl)-4,5-dihydro-1H-pyrazolo[4,3-c]quinoline-8-carboxamide

Participants

Role	Name	HCID	Charge
Reactant	N-(2-Aminoethyl)piperidine	HCID 33944	—
Reactant	Diisopropylethylamine	HCID 81531	—
Reactant	Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)	HCID 9886157	—
Reactant	7-methyl-4-oxo-1-(tetrahydro-2H-pyran-4-yl)-4,5-dihydro-1H-pyrazolo[4,3-c]quinoline-8-carboxylic acid	HCID 136336854	—
Solvent	Dimethylformamide	HCID 6228	—
Product	7-methyl-4-oxo-N-[2-(piperidin-1-yl)ethyl]-1-(tetrahydro-2H-pyran-4-yl)-4,5-dihydro-1H-pyrazolo[4,3-c]quinoline-8-carboxamide	HCID 136336860	32.8%

Reaction Steps

To a mixture of 8.2 mg of 7-methyl-4-oxo-1-(tetrahydro-2H-pyran-4-yl)-4,5-dihydro-1H-pyrazolo[4,3-c]quinoline-8-carboxylic acid, 3.8 mg of 1-(2-aminoethyl)piperidine, 13.1 μL of DIPEA, and 0.4 mL of DMF was added a mixture of 9.8 mg of HATU and 0.1 mL of DMF, followed by stirring at room temperature overnight. The reaction mixture was purified by preparative HPLC (methanol/0.1% aqueous formic acid solution) to obtain 3.6 mg of 7-methyl-4-oxo-N-[2-(piperidin-1-yl)ethyl]-1-(tetrahydro-2H-pyran-4-yl)-4,5-dihydro-1H-pyrazolo[4,3-c]quinoline-8-carboxamide.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08822448B2
Source dataset	uspto-grants-2014_09
ORD ID	ord-2ba3deb513e642d98cbf40b78e3620ce
Source note	uspto-grants-2014_09