Reaktion #70390

ord-340d8faef99e496e97c5611b441354e3

Reaktionsgleichung

C[C@]12CCCCC1C/C(=N\O)[C@@H]1[C@@H]2CC[C@@]2(C)[C@H]1CC13OCCOC12OCCO3
17,17-bis(ethylendioxy)-7-(E)-hydroxyiminoandrostane
C=C1C[C@@H]2[C@H](CC[C@]3(C)C(=O)CC[C@@H]23)[C@@]2(C)CCC(=O)CC12
6-methyleneandrostane-3,17-dione
→
C[C@]12CCC(=O)CC1C/C(=N\O)[C@@H]1[C@@H]2CC[C@]2(C)C(=O)CC[C@@H]12
title compound
Ausbeute 50.0%
C[C@]12CCC(=O)CC1C/C(=N\O)[C@@H]1[C@@H]2CC[C@]2(C)C(=O)CC[C@@H]12
7-(E)-Hydroxyiminoandrostane-3,17-dione
Ausbeute 50.0%

Edukte

C[C@]12CCCCC1C/C(=N\O)[C@@H]1[C@@H]2CC[C@@]2(C)[C@H]1CC13OCCOC12OCCO3
17,17-bis(ethylendioxy)-7-(E)-hydroxyiminoandrostane
C=C1C[C@@H]2[C@H](CC[C@]3(C)C(=O)CC[C@@H]23)[C@@]2(C)CCC(=O)CC12
6-methyleneandrostane-3,17-dione

Reagenzien

Keine

Reaktionsbedingungen

Detaillierte Bedingungen
See reaction.notes.procedure_details.

Aufarbeitung

  1. 1
    WaschenThe combined organic extracts were washed with H2O
  2. 2
    Trocknendried over Na2SO4
  3. 3
    Sonstigeevaporated to dryness
  4. 4
    SonstigeThe crude product was purified by flash chromatography (SiO2, n-hexane/EtOAc 6/4)

Vorschrift

The title compound II-at was prepared in 50% yield from 3,3:17,17-bis(ethylendioxy)-7-(E)-hydroxyiminoandrostane by the procedure described above for the preparation of 6-methyleneandrostane-3,17-dione (II-ac, Prepn. 13). The combined organic extracts were washed with H2O, dried over Na2SO4 and evaporated to dryness. The crude product was purified by flash chromatography (SiO2, n-hexane/EtOAc 6/4). 1H-NMR (300 MHz, DMSO-d6, ppm from TMS: δ 10.37 (1H, s), 2.99 (1H, m), 2.58-0.67 (19H, m), 1.12 (3H, s), 0.82 (3H, s).

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US08536160B2uspto-grants-2013_09