N-Methylethylamine → HCID 86638176, compound

HRID 1854254Notes

Reaction equation

HRID 1854254 reaction equation
[C:1]([O:4][C@H:5]1[C@H:10]([N:11]=[C:12]=[S:13])[C@@H:9]([O:14][C:15](=[O:17])[CH3:16])[C@H:8]([O:18][C:19](=[O:21])[CH3:20])[C@@H:7]([CH2:22][O:23][C:24](=[O:26])[CH3:25])[O:6]1)(=[O:3])[CH3:2].[CH2:27]([NH:29][CH3:30])[CH3:28]>C(Cl)Cl>[C:1]([O:4][C@H:5]1[C@H:10]([NH:11][C:12]([N:29]([CH2:27][CH3:28])[CH3:30])=[S:13])[C@@H:9]([O:14][C:15](=[O:17])[CH3:16])[C@H:8]([O:18][C:19](=[O:21])[CH3:20])[C@@H:7]([CH2:22][O:23][C:24](=[O:26])[CH3:25])[O:6]1)(=[O:3])[CH3:2]

Participants

4

Reactant 2

HCID 12219N-MethylethylamineHCID 14130735(2S,3R,4R,5S,6R)-6-(acetoxymethyl)-3-isothiocyanatotetrahydro-2H-pyran-2,4,5-triyl triacetate

Product 1

HCID 86638176HCID 86638176, compoundYield 86.8%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirred solution of (2S,3R,4R,5S,6R)-6-(acetoxymethyl)-3-isothiocyanato-tetrahydro-2H-pyran-2,4,5-triyl triacetate (1.10 g, 2.8 mmol) in CH2Cl2 (10 mL) was added neat ethyl(methyl)amine (310 μL, 3.6 mmol) dropwise. The mixture was stirred at room temperature for 1 h. Solvents were removed by concentration. The residue was purified by flash chromatography on silica gel (hexane/EtOAc 1:1) to give (2S,3R,4R,5S,6R)-6-(acetoxymethyl)-3-(3-ethyl-3-methylthioureido)-tetrahydro-2H-pyran-2,4,5-triyl triacetate as a white foam (1.09 g, 86% yield). 1H NMR (500 MHz, CDCl3) δ 1.15 (t, 3H, J=7.0 Hz), 2.05 (s, 3H), 2.06 (s, 3H), 2.11 (s, 3H), 2.13 (s, 3H), 3.08 (s, 3H), 3.74-3.81 (m, 3H), 4.16 (dd, 1H, J=2.0, 12.5 Hz), 4.27 (dd, 1H, J=4.5, 12.5 Hz), 5.14 (t, 1H, J=10.0 Hz), 5.26 (t, 1H, J=10.0 Hz), 5.34-5.40 (m, 2H), 5.78 (d, 1H, J=8.0 Hz).

Workup

  1. customSolvents were removed by concentration
  2. customThe residue was purified by flash chromatography on silica gel (hexane/EtOAc 1:1)

Sources & evidence

ORD record
ord-c6d5b52a7dc744dfbeee478b9512af2e
Source dataset
uspto-grants-2015_02
Patent number
US08962664B2

Reaction notes

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