17beta,19-Dihydroxy-1alpha-methyl-4-androsten-3-one 3-ethylenethioketal → 1alpha-Methyl-4-androstene-17beta,19-diol

HRID 371829ノート

反応式

HRID 371829 の反応式
C1O[C:4]2([CH2:21][C@H:20]([CH3:22])[C@@:19]3([CH2:23][OH:24])[C:6]([CH2:7][CH2:8][C@@H:9]4[C@@H:18]3[CH2:17][CH2:16][C@@:14]3([CH3:15])[C@H:10]4[CH2:11][CH2:12][C@@H:13]3[OH:25])=[CH:5]2)SC1>[Ni].CO>[CH3:22][C@@H:20]1[C@@:19]2([CH2:23][OH:24])[C:6]([CH2:7][CH2:8][C@@H:9]3[C@@H:18]2[CH2:17][CH2:16][C@@:14]2([CH3:15])[C@H:10]3[CH2:11][CH2:12][C@@H:13]2[OH:25])=[CH:5][CH2:4][CH2:21]1

参加物

4

反応物 1

HCID 2279742417beta,19-Dihydroxy-1alpha-methyl-4-androsten-3-one 3-ethylenethioketal

生成物 1

HCID 705847581alpha-Methyl-4-androstene-17beta,19-diol

試薬・触媒・溶媒 2

HCID 935Nickel触媒HCID 887Methanol溶媒

実験手順

Raney nickel is added to a solution of 17β,19-dihydroxy-1α-methyl-4-androsten-3-one 3-ethylenethioketal in methanol and the resulting suspension is refluxed for 4 hours with rapid stirring. The suspension is cooled, filtered and the solvent evaporated. The remaining residue is chromatographed on silica gel an eluted with methylenechloride. Recrystallization from acetone-hexane yields the compound 1α-methyl-4-androstene-17β,19-diol.

後処理

  1. temperaturethe resulting suspension is refluxed for 4 hours with rapid stirring
  2. temperatureThe suspension is cooled
  3. filtrationfiltered
  4. customthe solvent evaporated
  5. customThe remaining residue is chromatographed on silica gel
  6. washan eluted with methylenechloride
  7. customRecrystallization from acetone-hexane

出典と根拠

ORDレコード
ord-6fa81d89cb204e4faf0ed5d65bbfc46c
出典データセット
uspto-grants-1978_05
特許番号
US04087524

反応ノート

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