Triethylamine → 21-[4-Carboxy-3-(4-hydroxyphenyl)-1-oxobutoxy]-11beta,18-epoxy-18-hydroxypregn-4-ene-3,20-dione

HRID 67209Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 67209
C([O:4][C:5]1[CH:10]=[CH:9][C:8]([CH:11]([CH2:41][C:42]([OH:44])=[O:43])[CH2:12][C:13](=[O:40])[O:14][CH2:15][C:16](=[O:39])[C@@H:17]2[C@@:34]34[CH:35]([O:37][C@@H:32]([CH2:33]3)[C@H:31]3[C@@H:21]([CH2:22][CH2:23][C:24]5[C@:29]3([CH3:30])[CH2:28][CH2:27][C:26](=[O:38])[CH:25]=5)[C@@H:20]4[CH2:19][CH2:18]2)[OH:36])=[CH:7][CH:6]=1)(=O)C.C(N(CC)CC)C>CO>[C:42]([CH2:41][CH:11]([C:8]1[CH:7]=[CH:6][C:5]([OH:4])=[CH:10][CH:9]=1)[CH2:12][C:13](=[O:40])[O:14][CH2:15][C:16](=[O:39])[C@@H:17]1[C@@:34]23[CH:35]([O:37][C@@H:32]([CH2:33]2)[C@H:31]2[C@@H:21]([CH2:22][CH2:23][C:24]4[C@:29]2([CH3:30])[CH2:28][CH2:27][C:26](=[O:38])[CH:25]=4)[C@@H:20]3[CH2:19][CH2:18]1)[OH:36])([OH:44])=[O:43]

Komponenten

4

Edukt 2

HCID 8471TriethylamineHCID 7054401921-[3-(4-Acetyloxyphenyl)-4-carboxy-1-oxobutoxy]-11beta,18-epoxy-18-hydroxypregn-4-ene-3,20-dione

Produkt 1

HCID 7054183421-[4-Carboxy-3-(4-hydroxyphenyl)-1-oxobutoxy]-11beta,18-epoxy-18-hydroxypregn-4-ene-3,20-dioneAusbeute 68,6 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Versuchsvorschrift

A solution of 21-[3-(4-acetyloxyphenyl)-4-carboxy-1-oxobutoxy]-11β,18-epoxy-18-hydroxypregn-4-ene-3,20-dione (130 mg) in anhydrous methanol (15 ml) containing triethylamine (0.2 ml) is allowed to stand at room temperature for 24 hours. The methanol is then evaporated in vacuo, the residue is diluted with water (5.0 ml), acidified with 10% hydrochloric acid and extracted with ethyl acetate (three 5.0 ml portions). The ethyl acetate solution is washed with brine, dried over anhydrous magnesium sulfate, evaporated and the residue is subjected to preparative thin-layer chromatography on silica gel plates (using chloroform-methanol, 9:1 for development) to isolate 83 mg of the title compound, melting point 145°-152° C., with consistent spectral data.

Aufarbeitung

  1. customThe methanol is then evaporated in vacuo
  2. additionthe residue is diluted with water (5.0 ml)
  3. extractionextracted with ethyl acetate (three 5.0 ml portions)
  4. washThe ethyl acetate solution is washed with brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-0ed13fb411a7432faa06c3045a297a40
Quelldatensatz
uspto-grants-1982_08
Patentnummer
US04345096

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