Tetrahydrofuran → 1alpha-(tert-butyldimethylsilyloxy)-3beta-hydroxy-20(S)-{(Z)-4-ethyl-4-triethylsilyloxy-2-hexenylthio}pregna-5,7,16-triene

HRID 635025ノート

反応式

HRID 635025 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:24](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].BrC/[CH:43]=[CH:44]\[C:45]([CH2:56][CH3:57])([O:48][Si:49]([CH2:54][CH3:55])([CH2:52][CH3:53])[CH2:50][CH3:51])[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][CH2:24]/[CH:43]=[CH:44]\[C:45]([CH2:56][CH3:57])([O:48][Si:49]([CH2:52][CH3:53])([CH2:54][CH3:55])[CH2:50][CH3:51])[CH2:46][CH3:47])[CH3:22])[CH2:12][C@@H:11]([OH:40])[CH2:10]1)([C:4]([CH3:5])([CH3:6])[CH3:7])([CH3:2])[CH3:3]

参加物

6

反応物 4

HCID 8028TetrahydrofuranHCID 14797Potassium HydroxideHCID 12019512HCID 12019512、化合物HCID 86584696(Z)-1-bromo-4-ethyl-4-triethylsilyloxy-2-hexene

生成物 1

HCID 700086081alpha-(tert-butyldimethylsilyloxy)-3beta-hydroxy-20(S)-{(Z)-4-ethyl-4-triethylsilyloxy-2-hexenylthio}pregna-5,7,16-triene収率 60%

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)-phenoxycarbonylthio-pregna-5,7,16-triene (33.0 mg, 0.0568 mmol), (Z)-1-bromo-4-ethyl-4-triethylsilyloxy-2-hexene (91.0 mg, 0.284 mmol), tetrahydrofuran (0.5 ml) and 1M KOH solution in methanol (0.5 ml) were reacted and worked up, and then the residue was purified by preparative thin layer chromatography (0.5 mm×1, hexane:ethyl acetate=2:1, developed once) to give the title compound as a pale yellow oil (23.8 mg, 60%).

後処理

  1. customthe residue was purified by preparative thin layer chromatography (0.5 mm×1, hexane

出典と根拠

ORDレコード
ord-64f7b0c793574744a17af495f47d5d87
出典データセット
uspto-grants-2001_02
特許番号
US06184398B2

反応ノート

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