Potassium Hydroxide → Galeterone

HRID 254185Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 254185
C([O:4][C@H:5]1[CH2:22][CH2:21][C@@:20]2([CH3:23])[C:7](=[CH:8][CH2:9][C@@H:10]3[C@@H:19]2[CH2:18][CH2:17][C@@:15]2([CH3:16])[C@H:11]3[CH2:12][CH:13]=[C:14]2[N:24]2[C:28]3[CH:29]=[CH:30][CH:31]=[CH:32][C:27]=3[N:26]=[CH:25]2)[CH2:6]1)(=O)C.[OH-].[K+]>CO>[OH:4][C@H:5]1[CH2:22][CH2:21][C@@:20]2([CH3:23])[C:7](=[CH:8][CH2:9][C@@H:10]3[C@@H:19]2[CH2:18][CH2:17][C@@:15]2([CH3:16])[C@H:11]3[CH2:12][CH:13]=[C:14]2[N:24]2[C:28]3[CH:29]=[CH:30][CH:31]=[CH:32][C:27]=3[N:26]=[CH:25]2)[CH2:6]1

Komponenten

4

Edukt 2

HCID 14797Potassium HydroxideHCID 11464592(3S,8R,9S,10R,13S,14S)-17-(1H-Benzo[D]imidazol-1-YL)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[A]phenanthren-3-YL acetate

Produkt 1

HCID 11188409GaleteroneAusbeute 94 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Versuchsvorschrift

The acetate 4 (1.3 g 3.02 mmol) was dissolved in methanol (20 mL) under an inert Ar atmosphere, and the resulting solution treated with 10% methanolic KOH (8 mL). The mixture was stirred at room temperature for 1.5 h, and then concentrated under reduced pressure at approx. 40° C. to a volume of 10 mL. This solution was poured into ice water (300 mL), and the resulting white precipitate was filtered, washed with water and dried. Crystallization from EtOAc/MeOH gave 5 (1.10 g, 94%), mp 189-190° C.; IR(CHCl3) 2934, 2339, 1609, 1490, 1453, 1291, 1040, 837, 808, 705, 663, 608, 578, 550, 517 cm−1; 1H NMR (300 MHz, CDCl3) δ 1.02 (s, 3H, 18-CH3), 1.07 (s, 3H, 19-CH3), 3.55 (m, 1H, 3α-H), 5.41 (br s, 1H, 6-H), 5.99 (s, 1H, 16-H), 7.30 (m, 2H, aromatic-Hs), 7.54 (s, 1H, aromatic-H), 7.80 (s, 1H, aromatic-H), and 7.96 (s, 1H, 21-H). HRMS calcd 411.2407 (C26H32ON2.Na+). found 411.2396.

Aufarbeitung

  1. concentrationconcentrated under reduced pressure at approx. 40° C. to a volume of 10 mL
  2. additionThis solution was poured into ice water (300 mL)
  3. filtrationthe resulting white precipitate was filtered
  4. washwashed with water
  5. customdried
  6. customCrystallization from EtOAc/MeOH

Quellen und Nachweise

ORD-Eintrag
ord-28794f7a4fbb400890dda0a9a37e9953
Quelldatensatz
uspto-grants-2011_01
Patentnummer
US07875599B2

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