Acetic Anhydride → methyl (Z)-7-[(1R,2S)-2-[(E,3S)-3-acetyloxyoct-1-enyl]-5-oxocyclopent-3-en-1-yl]hept-5-enoate

HRID 1164155Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1164155
[CH3:1][CH2:2][CH2:3][CH2:4][CH2:5][C@H:6]([OH:26])/[CH:7]=[CH:8]/[C@@H:9]1[C@@H:14]([CH2:15]/[CH:16]=[CH:17]/[CH2:18][CH2:19][CH2:20][C:21]([O:23][CH3:24])=[O:22])[C:12](=[O:13])[CH2:11][C@H:10]1O.[C:27](OC(=O)C)(=[O:29])[CH3:28]>N1C=CC=CC=1>[CH3:24][O:23][C:21](=[O:22])[CH2:20][CH2:19][CH2:18]/[CH:17]=[CH:16]\[CH2:15][C@@H:14]1[C@@H:9](/[CH:8]=[CH:7]/[C@@H:6]([O:26][C:27](=[O:29])[CH3:28])[CH2:5][CH2:4][CH2:3][CH2:2][CH3:1])[CH:10]=[CH:11][C:12]1=[O:13]

Komponenten

4

Edukt 2

HCID 7918Acetic AnhydrideHCID 6434107Prostaglandins E2 methyl ester

Produkt 1

HCID 13322736methyl (Z)-7-[(1R,2S)-2-[(E,3S)-3-acetyloxyoct-1-enyl]-5-oxocyclopent-3-en-1-yl]hept-5-enoate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1049PyridineLösungsmittel

Reaktionsbedingungen

Temperatur
35 °C

Versuchsvorschrift

A mixture of 2.4 g of PGE2 methyl ester, 30 ml of acetic anhydride and 6 ml of pyridine was stirred at 35° C. for 40 hours. After concentration under reduced pressure, the residue was dissolved in diethyl ether, washed with water, and a saturated aqueous solution of sodium chloride, dried over magnesium sulphate and concentrated under reduced pressure to give 2.56 g of (5Z,13E)-(15S)-9-oxo-15-acetoxyprosta-5,10,13-trienoic acid methyl ester having the following physical characteristic:

Aufarbeitung

  1. concentrationAfter concentration under reduced pressure
  2. dissolutionthe residue was dissolved in diethyl ether
  3. washwashed with water
  4. dry with materiala saturated aqueous solution of sodium chloride, dried over magnesium sulphate
  5. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-b5895f55388349619c5da916d5b4bdbb
Quelldatensatz
uspto-grants-1983_01
Patentnummer
US04367237

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