4-Methylmorpholine → (1-{9-[(4s,2r,3r,5r)-3,4-Dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-6-aminopurin-2-yl}pyrazol-4-yl)-n-(cyclopentylmethyl)carboxamide

Participants

Role	Name	HCID	Charge
Reactant	4-Methylmorpholine	HCID 7972	—
Reactant	1-Hydroxybenzotriazole	HCID 75771	—
Reactant	Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)	HCID 2733084	—
Reactant	1-[6-Amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-9H-purin-2-yl]-1H-pyrazole-4-carboxylic acid amide	HCID 9864445	—
Catalyst	4-(Dimethylamino)pyridine	HCID 14284	—
Solvent	Dichloromethane	HCID 6344	—
Product	(1-{9-[(4s,2r,3r,5r)-3,4-Dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-6-aminopurin-2-yl}pyrazol-4-yl)-n-(cyclopentylmethyl)carboxamide	HCID 9933850	—

Reaction Steps

The trisilyl derivative acid 20 (0.14 g, 0.2 mmol) was then dissolved in 5 mL dichloromethane. To the solution was added HBTU (0.19 g, 0.4 mmol), HOBt (0.076 g, 4 mmol), N-methylmorpholine (0.04 g, 0.4 mmol) and cat. DMAP. The mixture was allowed to stir at RT for 24 h. The mixture was then washed with 10% citric acid, saturated NaHCO3, brine and dried over MgSO4. The solvent was removed and the residue was treated with 5 mL 0.5N NH4F/MeOH. The solution was heated at reflux for 24 h. The solvent was evaporated and the residue was purified by preparative TLC to afford compound 21, MS 445.26 (M+1).

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US07183264B2
Source dataset	uspto-grants-2007_02
ORD ID	ord-8c97692b74c24a948b0e7097ce00d13f
Source note	uspto-grants-2007_02