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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 516459Generated: October 26, 2026

Dimethylformamide → HCID 178434959, compound

https://huagongshe.com/reaction/516459

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethylformamideHCID 6228—
ReactantDiisopropylethylamineHCID 81531—
ReactantO-(6-Chlorobenzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphateHCID 42624899—
Reactant(2R,4R)-4-Amino-5-(3'-chlorobiphenyl-4-yl)-2-hydroxypentanoic acid 5-methyl-2-oxo[1,3]dioxol-4-ylmethyl esterHCID 86705143—
ReactantHCID 178524632HCID 178524632—
ProductHCID 178434959HCID 17843495980.8%

Reaction Steps

5-Hydroxy-1-pyridin-2-yl-1H-pyrazole-3-carboxylic acid (8.1 mg, 39 μmol) and HCTU (16.2 mg, 39 μmol) were combined in DMF (166 μL, 2.1 mmol) and stirred at room temperature for 15 minutes. DIPEA (19 μL, 0.1 mmol) and (2R,4R)-4-amino-5-(3′-chlorobiphenyl-4-yl)-2-hydroxypentanoic acid 5-methyl-2-oxo[1,3]dioxol-4-ylmethyl ester (15.4 mg, 36 μmol) were added, and the resulting mixture was stirred at room temperature for 30 minutes. The solvent was removed in vacuo and the crude product was purified by preparative HPLC to yield the title compound (18 mg). MS m/z [M+H]+ calc'd for C31H27ClN4O8, 619.15. found 619.1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09108934B2
Source datasetuspto-grants-2015_08
ORD IDord-6910f7e16e2b4e1ea8dab65e431e46c8
Source noteuspto-grants-2015_08