Sodium Carbonate → Anhydro abiraterone

HRID 53181

反応式

HRID 53181 の反応式
C(B(CC)[C:4]1[CH:5]=[N:6][CH:7]=[CH:8][CH:9]=1)C.FC(F)(F)S(O[C:18]1[C@:19]2([CH2:36][CH2:35][C@H:34]3[C@@H:24]([CH2:25][CH:26]=[C:27]4[C@:32]3([CH3:33])[CH2:31][CH2:30][CH:29]=[CH:28]4)[C@@H:21]2[CH2:22][CH:23]=1)[CH3:20])(=O)=O.C(=O)([O-])[O-].[Na+].[Na+]>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.C1COCC1>[N:6]1[CH:7]=[CH:8][CH:9]=[C:4]([C:18]2[C@:19]3([CH2:36][CH2:35][C@H:34]4[C@@H:24]([CH2:25][CH:26]=[C:27]5[C@:32]4([CH3:33])[CH2:31][CH2:30][CH:29]=[CH:28]5)[C@@H:21]3[CH2:22][CH:23]=2)[CH3:20])[CH:5]=1

参加物

6

反応物 3

HCID 10340Sodium CarbonateHCID 6428513-(Diethylboryl)pyridineHCID 10476216[(8R,9S,10R,13S,14S)-10,13-dimethyl-2,7,8,9,11,12,14,15-octahydro-1H-cyclopenta[a]phenanthren-17-yl] trifluoromethanesulfonate

生成物 1

HCID 10314660Anhydro abiraterone収率 84%

試薬・触媒・溶媒 2

HCID 178418476HCID 178418476、化合物触媒HCID 8028Tetrahydrofuran溶媒

実験手順

The method followed that described in Example 1, using in step (b) diethyl(3-pyridyl)borane (0.88g, 6.0 mmol), androsta-3,5,16-trien-17-yl trifluoromethanesulphonate (2.01g, 5.0 mmol), prepared in step (a), THF (25 ml), bis(triphenylphosphine)palladium(II) chloride (35 mg, 0.05 mmol), and aqueous sodium carbonate (2M, 10 ml). Chromatography, on elution with dichloromethane, afforded the title compound (1.39 g, 84%) which crystallised from hexane, m.p. 110°-112° C. 1H-NMR (CDCl3) inter alia δ 1.02(3H,s,19-CH3), 1.07(3H,s,18-CH3), 5.44(1H,m,6-H), 5.61(1H,m,3-H), 5.95(1H,dm, J 9.8 Hz, 4-H), 6.01(1H,m, 16-H), 7.23(1H,m,Py 5-H), 7.66(1H,m,Py 4-H), 8.46(1H,m,Py 6-hr), 8.63(1H,m,Py 2-H); MS m/z 331 (M+).

後処理

  1. washChromatography, on elution with dichloromethane

出典と根拠

ORDレコード
ord-4a2ce9feb87d4d10bdd8e66b84826df9
出典データセット
uspto-grants-1997_04
特許番号
US05618807

関連ノート

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