Dimethylformamide → (2R,3R)-2-hydroxy-3-(1-((2'-(N-(methoxycarbonyl)-sulfamoyl)biphenyl-4-yl)methyl)-5-propyl-1H-pyrazole-3-carboxamido)-4-phenylbutanoic Acid

Participants

Role	Name	HCID	Charge
Reactant	Dimethylformamide	HCID 6228	—
Reactant	Diisopropylethylamine	HCID 81531	—
Reactant	(2R,3R)-3-amino-2-hydroxy-4-phenylbutanoic acid	HCID 638739	—
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	1-((2'-(N-(methoxycarbonyl)sulfamoyl)biphenyl-4-yl)methyl)-5-propyl-1H-pyrazole-3-carboxylic acid	HCID 58102903	—
Product	(2R,3R)-2-hydroxy-3-(1-((2'-(N-(methoxycarbonyl)-sulfamoyl)biphenyl-4-yl)methyl)-5-propyl-1H-pyrazole-3-carboxamido)-4-phenylbutanoic Acid	HCID 58102914	95%

Reaction Steps

A solution of 1-((2′-(N-(methoxycarbonyl)sulfamoyl)biphenyl-4-yl)methyl)-5-propyl-1H-pyrazole-3-carboxylic acid (40.2 mg, 87.8 μmol), DIPEA (91.8 μL, 527 μmol) and HATU (33.4 mg, 87.8 μmol) in DMF (0.4 mL, 4 mmol) was stirred to pre-activate the acid. After 1 minute, (2R,3R)-3-amino-2-hydroxy-4-phenylbutyric acid (17.1 mg, 87.8 μmol) was added, and the mixture was stirred for 10 minutes. The reaction was quenched by adding 1 N HCl and extracted with DCM. The organic layer was added to AcOH (1 mL) and evaporated in vacuo. The material was then purified by preparative HPLC to yield the title compound (10 mg, 95% purity). MS m/z: [M+H]+ calcd for C32H34N4O8S, 635.21. found 635.20.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08822522B2
Source dataset	uspto-grants-2014_09
ORD ID	ord-63953aa311124f91b8becc09526202ea
Source note	uspto-grants-2014_09