Water → 7alpha-(5-Chloropentyl)-16alpha-fluoro-estra-1,3,5(10)-triene-3,17alpha-diol

HRID 361663ノート

反応式

HRID 361663 の反応式
[Cl:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C@@H:7]1[CH2:24][C:23]2[CH:22]=[C:21]([OH:25])[CH:20]=[CH:19][C:18]=2[C@@H:17]2[C@@H:8]1[C@H:9]1[C@@:13]([CH2:15][CH2:16]2)([CH3:14])[C:12](=[O:26])[C@H:11]([F:27])[CH2:10]1.[H-].C(O[Al](OC(C)(C)C)OC(C)(C)C)(C)(C)C.[Li+].O.S(=O)(=O)(O)O>O1CCCC1>[Cl:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C@@H:7]1[CH2:24][C:23]2[CH:22]=[C:21]([OH:25])[CH:20]=[CH:19][C:18]=2[C@@H:17]2[C@@H:8]1[C@H:9]1[C@@:13]([CH2:15][CH2:16]2)([CH3:14])[C@H:12]([OH:26])[C@H:11]([F:27])[CH2:10]1

参加物

6

反応物 4

HCID 962WaterHCID 1118Sulfuric AcidHCID 16710494Lithium tri-tert-butoxyaluminohydrideHCID 229418077alpha-(5-Chloropentyl)-16alpha-fluoro-estra-1,3,5(10)-trien-3-ol-17-one

生成物 1

HCID 155422577alpha-(5-Chloropentyl)-16alpha-fluoro-estra-1,3,5(10)-triene-3,17alpha-diol収率 35%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

反応条件

温度
0 °C

実験手順

392 mg of 7α-(5-chloropentyl)-16α-fluoro-estra-1,3,5(10)-trien-3-ol-17-one, Example 15d), in 2 ml of anhydrous tetrahydrofuran is dissolved, and 1.1 ml of a 1-molar solution of lithium tri-tert-butoxyaluminum hydride in tetrahydrofuran is added while being cooled in an ice bath. It is allowed to stir for 30 minutes at 0° C., then mixed with water and 8% sulfuric acid until a weakly acidic reaction is achieved, and it is extracted three times with ethyl acetate. The organic phase is washed with saturated sodium chloride solution, dried with sodium sulfate and evaporated to dryness in a vacuum. The crude product is chromatographed on silica gel with hexane/ethyl acetate, whereby 118 mg of 7α-(5-chloropentyl)-16α-fluoro-estra-1,3,5(10)-triene-3,17β-diol and 138 mg of 7α-(5-chloropentyl)-16α-fluoro-estra-1,3,5(10)-triene-3,17α-diol is obtained, both as a solid foam.

後処理

  1. temperaturewhile being cooled in an ice bath
  2. extractionit is extracted three times with ethyl acetate
  3. washThe organic phase is washed with saturated sodium chloride solution
  4. dry with materialdried with sodium sulfate
  5. customevaporated to dryness in a vacuum
  6. customThe crude product is chromatographed on silica gel with hexane/ethyl acetate, whereby 118 mg of 7α-(5-chloropentyl)-16α-fluoro-estra-1,3,5(10)-triene-3,17β-diol

出典と根拠

ORDレコード
ord-0b758f18e4144d089bc004fe05133a93
出典データセット
uspto-grants-1999_02
特許番号
US05866560

反応ノート

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