1-Hydroxybenzotriazole → [(2R,3S)-2-Hydroxy-3-({1-[3-(2-oxo-pyrrolidin-1-yl)-5-pentyloxy-phenyl]-methanoyl}-amino)-4-phenyl-butyl]-carbamic acid benzyl ester

Participants

Role	Name	HCID	Charge
Reactant	1-Hydroxybenzotriazole	HCID 75771	—
Reactant	1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride	HCID 2723939	—
Reactant	3-(2-Oxo-pyrrolidin-1-yl)-5-pentyloxy-benzoic acid	HCID 69357105	—
Reactant	phenylmethyl [(2R,3S)-3-amino-2-hydroxy-4-phenylbutyl]carbamate hydrochloride	HCID 69358558	—
Solvent	Dichloromethane	HCID 6344	—
Product	[(2R,3S)-2-Hydroxy-3-({1-[3-(2-oxo-pyrrolidin-1-yl)-5-pentyloxy-phenyl]-methanoyl}-amino)-4-phenyl-butyl]-carbamic acid benzyl ester	HCID 69359603	48%

Reaction Steps

To a suspension of 3-(2-oxo-pyrrolidin-1-yl)-5-pentyloxy-benzoic acid (A13) (530 mg, 1.82 mmol, 1 equiv) in CH2Cl2 (20 ml) were added HOBT (300 mg, 2.2 mmol, 1.2 equiv) and EDAC.HCl (420 mg, 2.2 mmol, 1.2 equiv). After stirring for 5 min, 3-(2-oxo-pyrrolidin-1-yl)-5-pentyloxy-benzoic acid hydrochloride (D104) (570 mg, 1.82 mmol, 1 equiv) was added and the resulting mixture was stirred at room temperature for 16 h. The reaction mixture was then diluted with CH2Cl2 (20 ml) washed with saturated aqueous NaHCO3 solution, dried over MgSO4 and concentrated in vacuo to give [(2R,3S)-2-hydroxy-3-({1-[3-(2-oxo-pyrrolidin-1-yl)-5-pentyloxy-phenyl]-methanoyl}-amino)-4-phenyl-butyl]-carbamic acid benzyl ester (D105) (510 mg, 48%) as a white solid.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US07253198B2
Source dataset	uspto-grants-2007_08
ORD ID	ord-1d2d8f6aacb7402e83b76fcba3c7e590
Source note	uspto-grants-2007_08