Acetic Acid → HCID 9827999, compound

HRID 1794734Notes

Reaction equation

HRID 1794734 reaction equation
C(O)(=O)C.[NH2:5][CH2:6][C@@H:7]([C:9]1[CH:10]=[CH:11][C:12]([OH:20])=[C:13]([NH:15][S:16]([CH3:19])(=[O:18])=[O:17])[CH:14]=1)[OH:8].O=[C:22]1[CH2:27][CH2:26][N:25]([C:28]2[CH:41]=[CH:40][C:31]([CH2:32][N:33]3[C:37](=[O:38])[NH:36][C:35](=[O:39])[O:34]3)=[CH:30][CH:29]=2)[CH2:24][CH2:23]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>CN(C=O)C>[O:38]=[C:37]1[NH:36][C:35](=[O:39])[O:34][N:33]1[CH2:32][C:31]1[CH:30]=[CH:29][C:28]([N:25]2[CH2:26][CH2:27][CH:22]([NH:5][CH2:6][C@@H:7]([C:9]3[CH:10]=[CH:11][C:12]([OH:20])=[C:13]([NH:15][S:16]([CH3:19])(=[O:18])=[O:17])[CH:14]=3)[OH:8])[CH2:23][CH2:24]2)=[CH:41][CH:40]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 5049666Sodium triacetoxyborohydrideHCID 12047933(R)-N-(5-(2-amino-1-hydroxyethyl)-2-hydroxyphenyl)methanesulfonamideHCID 12965963HCID 12965963, compound

Product 1

HCID 9827999HCID 9827999, compoundYield 71.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Acetic acid (0.09 mL, 1.6 mmol) was added to a mixture of N-{5-[(1R)-2-amino-1-hydroxyethyl]-2-hydroxyphenyl}methanesulfonamide (197 mg, 0.8 mmol) (which was obtained in Example 10), 2-[4-(4-oxo-1-piperidinyl)benzyl]-1,2,4-oxadiazolidine-3,5-dione (231 mg, 0.8 mmol) (which was obtained in Example 55), and DMF(5 mL). The mixture was stirred for 20 minutes and then, sodium triacetoxyborohydride (203 mg, 0.96 mmol) was added, and the new mixture was stirred at room temperature for 24 hours. The volatiles were removed in vacuo and the residue was purified by flash chromatography (dichloromethane/methyl alcohol 4/1) to produce an off-white solid (296 mg, 71% yield); mp 193–195° C.; 1H NMR (400 MHz, DMSO-d6) δ 1.58–1.62 (m, 2H), 1.96–2.07 (m, 2H), 2.60–2.70 (m, 2H), 2.86–3.17 (m, 6H), 3.72–3.8 (m, 2H), 4.28 (s, 2H), 2.70–2.74 (m, 1H), 6.83–6.87 (m, 3H), 7.03–7.13 (m, 3H), 7.23 (m, 1H), 8.60 (brs, 2H); MS (ES) m/z: 518 (M−H)−.

Workup

  1. stirringthe new mixture was stirred at room temperature for 24 hours
  2. customThe volatiles were removed in vacuo
  3. customthe residue was purified by flash chromatography (dichloromethane/methyl alcohol 4/1)

Sources & evidence

ORD record
ord-deb9a491cb31434780c96574e9db41cc
Source dataset
uspto-grants-2006_04
Patent number
US07022716B2

Reaction notes

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