Hydrochloric Acid → HCID 59193310, compound

HRID 1922610Notes

Reaction equation

[C:1]([NH:24][CH2:25][C:26]([NH:28][C:29]1[CH:30]=[CH:31][C:32]([OH:39])=[C:33]([CH:38]=1)[C:34]([O:36]C)=[O:35])=[O:27])(=[O:23])[CH2:2][CH2:3]/[CH:4]=[CH:5]\[CH2:6]/[CH:7]=[CH: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][CH3:22].Cl>C1COCC1.[OH-].[Na+]>[C:1]([NH:24][CH2:25][C:26]([NH:28][C:29]1[CH:30]=[CH:31][C:32]([OH:39])=[C:33]([CH:38]=1)[C:34]([OH:36])=[O:35])=[O:27])(=[O:23])[CH2:2][CH2:3]/[CH:4]=[CH:5]\[CH2:6]/[CH:7]=[CH: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][CH3:22]

Participants

Conditions

Temperature: 50 °C

Procedure

The methyl 5-(2-(4Z,7Z,10Z,13Z,16Z,19Z)-docosa-4,7,10,13,16,19-hexaenamidoacetamido)-2-hydroxybenzoate (0.9 g, 1.7 mmol) was dissolved in THF (15 mL) and 1 N NaOH (8 mL). The reaction was stirred (50° C., 5 h), and then acidified to pH 3 with 2 N HCl. The product was extracted with ethyl acetate, and the combined organic extracts were washed with water, brine and dried over MgSO4. The crude material was purified by silica chromatography (0-5% MeOH/CH2Cl2) to afford 0.40 g of 5-(2-(4Z,7Z,10Z,13Z,16Z,19Z)-docosa-4,7,10,13,16,19-hexaenamidoacetamido)-2-hydroxybenzoic acid as a yellow solid. [M+H]+=521.3. Mass calculated for C31H40N2O5=520.66; found: [M−H]+=519.2.

Workup

extractionThe product was extracted with ethyl acetate
washthe combined organic extracts were washed with water, brine
dry with materialdried over MgSO4
customThe crude material was purified by silica chromatography (0-5% MeOH/CH2Cl2)

Sources & evidence

ORD record: ord-3170f56911ba4aa583f19822700acddf
Source dataset: uspto-grants-2012_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08173831B2

Reaction notes

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