Triethylamine → HCID 86624083, compound

HRID 2421811Notes

Reaction equation

HRID 2421811 reaction equation
Cl.[OH:2][CH:3]1[O:11][C@H:10]([CH2:12][OH:13])[C@@H:8]([OH:9])[C@H:6]([OH:7])[C@@H:4]1[NH2:5].C(N([CH2:19][CH3:20])CC)C>CN(C=O)C>[C:3]([NH:5][C@H:4]1[C@@H:6]([OH:7])[C@H:8]([OH:9])[C@@H:10]([CH2:12][OH:13])[O:11][CH:3]1[OH:2])(=[O:2])[CH2:4][CH2:6][C:19]#[CH:20]

Participants

4

Reactant 2

HCID 8471TriethylamineHCID 9964480(3S,4R,5S,6R)-3-Amino-6-(hydroxymethyl)tetrahydro-2H-pyran-2,4,5-triol hydrochloride

Product 1

HCID 86624083HCID 86624083, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of D-mannosamine hydrochloride (863 mg, 4.0 mmol), N-succinimidyl 4-pentynoate 9 (781 mg, 4.0 mmol), triethylamine (1.67 ml, 12.0 mmol) in DMF (31 ml) was stirred at room temperature overnight. The reaction mixture was concentrated in vacuo, and the residue was purified by flash column chromatography (CHCl3/MeOH 8:1) to give N-4-Pentynoylmannosamine, 10 (898 mg, 87%); 1H-NMR (500 MHz, D2O) 2.37 (t, 2.63H, J=2.5 Hz), 2.48-2.63 (m, 10.5H), 3.38-3.42 (m, 1H), 3.52 (t, 1H, J=10 Hz), 3.63 (t, 1.63H, J=10 Hz), 3.69-3.91 (m, 7.89H), 4.05 (dd, 1.63H, J=4.5 and 10 Hz), 4.35 (dd, 1.63H, J=1.5 and 4.5 Hz), 4.47 (dd, 1H, J=1.5 and 4.5 Hz), 5.03 (d, 1H, J=1.5 Hz), 5.13 (d, 1.63H, J=1.5 Hz); 13C-NMR (125 MHz, D2O)□ 14.78, 14.91, 34.62, 34.79, 53.67, 54.50, 60.91, 60.93, 67.01, 67.28, 69.25, 70.56, 70.71, 72.47, 72.50, 76.80, 84.04, 84.45, 93.36, 93.67, 175.68, 176.41; ESI-TOF-HRMS m/e calculated for (M+H)+ C11H17NO6260.1129; found 260.1120.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customthe residue was purified by flash column chromatography (CHCl3/MeOH 8:1)

Sources & evidence

ORD record
ord-df0405d90c0d4f299deef28b841231e7
Source dataset
uspto-grants-2011_06
Patent number
US07960139B2

Reaction notes

Loading…