Tetrahydrofuran → 1alpha-(tert-butyldimethylsilyloxy)-3beta-hydroxy-20(S)-(4-ethyl-4-hydroxy-2-hexynylthio)pregna-5,7,16-triene

HRID 1268506ノート

反応式

HRID 1268506 の反応式
[Si:1]([O:8][C@@H:9]1[C@@:37]2([CH3:38])[C:13](=[CH:14][CH:15]=[C:16]3[C@@H:36]2[CH2:35][CH2:34][C@@:33]2([CH3:39])[C@H:17]3[CH2:18][CH:19]=[C:20]2[C@@H:21]([S:23]C(OC2C=CC=CC=2)=O)[CH3:22])[CH2:12][C@@H:11]([OH:40])[CH2:10]1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].Br[CH2:42][C:43]#[C:44][C:45]([CH2:49][CH3:50])([OH:48])[CH2:46][CH3:47].O1CCCC1.[OH-].[K+]>CO>[Si:1]([O:8][C@@H:9]1[C@@:37]2([CH3:38])[C:13](=[CH:14][CH:15]=[C:16]3[C@@H:36]2[CH2:35][CH2:34][C@@:33]2([CH3:39])[C@H:17]3[CH2:18][CH:19]=[C:20]2[C@@H:21]([S:23][CH2:42][C:43]#[C:44][C:45]([CH2:49][CH3:50])([OH:48])[CH2:46][CH3:47])[CH3:22])[CH2:12][C@@H:11]([OH:40])[CH2:10]1)([C:4]([CH3:7])([CH3:5])[CH3:6])([CH3:3])[CH3:2]

参加物

6

反応物 4

HCID 8028TetrahydrofuranHCID 14797Potassium HydroxideHCID 12019512HCID 12019512、化合物HCID 220276876-Bromo-3-ethyl-4-hexyn-3-ol

生成物 1

HCID 120200451alpha-(tert-butyldimethylsilyloxy)-3beta-hydroxy-20(S)-(4-ethyl-4-hydroxy-2-hexynylthio)pregna-5,7,16-triene収率 63%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

実験手順

Under the same conditions as in Example 3, 1α-(tert-butyldimethylsilyloxy)-3β-hydroxy-20(S)-phenoxycarbonylthiopregna-5,7,16-triene (60.8 mg, 0.105 mmol), 6-bromo-3-ethyl-4-hexyn-3-ol (108 mg, 0.525 mmol), tetrahydrofuran (1 ml) and 1M KOH solution in methanol (1 ml) were reacted and worked up, and then the residue was purified by preparative thin layer chromatography (0.5 mm×2, dichloromethane ethyl acetate=5:1, developed twice) to give the title compound as a colorless oil (38.4 mg, 63%).

後処理

  1. customthe residue was purified by preparative thin layer chromatography (0.5 mm×2, dichloromethane ethyl acetate=5:1

出典と根拠

ORDレコード
ord-62e9043e560d4ce2a886cde0b165675c
出典データセット
uspto-grants-2003_04
特許番号
US06555699B2

反応ノート

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