Hydrochloric Acid → HCID 49787411, compound

HRID 1028078Notes

Reaction equation

HRID 1028078 reaction equation
OO.O.[OH-].[Li+].[CH2:6]([O:26][C@H:27]([CH2:43][CH3:44])[C:28](N1[C@@H](C)[C@@H](C2C=CC=CC=2)OC1=O)=[O:29])[CH2:7][CH2:8][CH2:9]/[CH:10]=[CH:11]\[CH2:12]/[CH:13]=[CH:14]\[CH2:15]/[CH:16]=[CH:17]\[CH2:18]/[CH:19]=[CH:20]\[CH2:21]/[CH:22]=[CH:23]\[CH2:24][CH3:25].[O-:45]S([O-])=O.[Na+].[Na+].Cl>O1CCCC1.O>[CH2:6]([O:26][C@H:27]([CH2:43][CH3:44])[C:28]([OH:29])=[O:45])[CH2:7][CH2:8][CH2:9]/[CH:10]=[CH:11]\[CH2:12]/[CH:13]=[CH:14]\[CH2:15]/[CH:16]=[CH:17]\[CH2:18]/[CH:19]=[CH:20]\[CH2:21]/[CH:22]=[CH:23]\[CH2:24][CH3:25]

Participants

8

Reactant 5

HCID 313Hydrochloric AcidHCID 784Hydrogen PeroxideHCID 24437Sodium SulfiteHCID 168937Lithium hydroxide, monohydrateHCID 66645123HCID 66645123, compound

Product 1

HCID 49787411HCID 49787411, compoundYield 29%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

Hydrogen peroxide (35% in water, 0.65 mL, 7.37 mmol) and lithium hydroxide monohydrate (0.15 g, 3.69 mmol) was added to a solution of (4S,5R)-3-((R)-2-((5Z,8Z,11Z,14Z,17Z)-icosa-5,8,11,14,17-pentaenyloxy)butanoyl)-4-methyl-5-phenyloxazolidin-2-one (0.95 g, 1.84 mmol) in tetrahydrofuran (12 mL) and water (4 mL) held at 0° C. under nitrogen. The reaction mixture was stirred at 0° C. for 30 minutes. 10% Na2SO3(aq)(30 mL) was added, the pH was adjusted to ˜2 with 2M HCl and the mixture was extracted twice with heptane (30 mL). The combined organic extract was dried (Na2SO4), filtered and concentrated. The residue was subjected to flash chromatography on silica gel using increasingly polar mixtures of heptane and ethyl acetate (98:8→50:50) as eluent. Concentration of the appropriate fractions afforded 0.19 g (29% yield) of the title compound as an oil. 1H-NMR (300 MHz, CDCl3): δ 0.90-1.00 (m, 6H), 1.48 (m, 2H), 1.65 (m, 2H), 1.85 (m, 2H), 2.10 (m, 4H), 2.80-2.90 (m, 8H), 3.55 (m, 1H), 3.60 (m, 1H), 3.88 (t, 1H), 5.35-5.45 (m, 10H); MS (electro spray): 373.3 [M−H]−; [α]D−31° (c=0.088, ethanol)

Workup

  1. customheld at 0° C. under nitrogen
  2. extractionthe mixture was extracted twice with heptane (30 mL)
  3. extractionThe combined organic extract
  4. dry with materialwas dried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. temperatureincreasingly polar mixtures of heptane and ethyl acetate (98:8→50:50) as eluent

Sources & evidence

ORD record
ord-8758f598e71a4320ad1f18e2468f1796
Source dataset
uspto-grants-2014_05
Patent number
US08735436B2

Reaction notes

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