Methanol → Anecortave

HRID 1032030

Reaktionsgleichung

Reaktionsgleichung von HRID 1032030
C([O:4][CH2:5][C:6](=[O:28])[C@:7]1([OH:27])[C@:24]2([CH3:25])[C@H:10]([C@H:11]3[C:21](=[CH:22][CH2:23]2)[C@:19]2([CH3:20])[C:14](=[CH:15][C:16](=[O:26])[CH2:17][CH2:18]2)[CH2:13][CH2:12]3)[CH2:9][CH2:8]1)(=O)C.CO>C(Cl)Cl>[OH:27][C@:7]1([C@:24]2([CH3:25])[C@H:10]([C@H:11]3[C:21](=[CH:22][CH2:23]2)[C@:19]2([CH3:20])[C:14](=[CH:15][C:16](=[O:26])[CH2:17][CH2:18]2)[CH2:13][CH2:12]3)[CH2:9][CH2:8]1)[C:6](=[O:28])[CH2:5][OH:4]

Komponenten

4

Edukt 2

HCID 887MethanolHCID 111332Anecortave Acetate

Produkt 1

HCID 7074810AnecortaveAusbeute 89,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

At room temperature, 1.5 g of 21-acetoxy-17-hydroxy-4,9(11)-pregnadiene-3,20-dione in 40 ml is agitated for 2 hours at room temperature with 15 ml of methanol 0.2N methanolic potassium hydroxide solution. The reaction mixture is introduced into ice water. The precipitated product is suctioned off, dissolved in methylene chloride, washed with water, and dried over sodium sulfate, thus obtaining 1.2 g of 17,21-dihydroxy-4,9(11) pregnadiene3,20-dione; mp 248.2° C.

Aufarbeitung

  1. washwashed with water
  2. dry with materialdried over sodium sulfate

Quellen und Nachweise

ORD-Eintrag
ord-55c8034840ae47a2b610f62f85552da4
Quelldatensatz
uspto-grants-1990_09
Patentnummer
US04956482

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