(S)-tert-butyl 2-((tert-butyldimethylsilyloxy)methyl)-3-ethyl-5-oxo-5,6-dihydropyridine-1 (2H)-carboxylate → (2S,5S)-tert-butyl 2-((tert-butyldimethylsilyloxy)methyl)-3-ethyl-5-hydroxy-5,6-dihydropyridine-1(2H)-carboxylate

HRID 627220ノート

反応式

HRID 627220 の反応式
[Si:1]([O:8][CH2:9][C@@H:10]1[C:15]([CH2:16][CH3:17])=[CH:14][C:13](=[O:18])[CH2:12][N:11]1[C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[Si](OC[C@@H]1C=C(C)[C@H](O)CN1C(OC(C)(C)C)=O)(C(C)(C)C)(C)C>>[Si:1]([O:8][CH2:9][C@@H:10]1[C:15]([CH2:16][CH3:17])=[CH:14][C@H:13]([OH:18])[CH2:12][N:11]1[C:19]([O:21][C:22]([CH3:23])([CH3:25])[CH3:24])=[O:20])([C:4]([CH3:7])([CH3:5])[CH3:6])([CH3:3])[CH3:2]

参加物

3

反応物 2

HCID 89852241(S)-tert-butyl 2-((tert-butyldimethylsilyloxy)methyl)-3-ethyl-5-oxo-5,6-dihydropyridine-1 (2H)-carboxylate2 回HCID 89852486tert-Butyl (3S,6S)-6-{[(tert-butyldimethylsilyl)oxy]methyl}-3-hydroxy-4-methyl-1,2,3,6-tetrahydropyridine-1-carboxylate

生成物 1

HCID 89852682(2S,5S)-tert-butyl 2-((tert-butyldimethylsilyloxy)methyl)-3-ethyl-5-hydroxy-5,6-dihydropyridine-1(2H)-carboxylate収率 100.3%

実験手順

The title compound was prepared from (S)-tert-butyl 2-((tert-butyldimethylsilyloxy)methyl)-3-ethyl-5-oxo-5,6-dihydropyridine-1(2H)-carboxylate (Intermediate 207, 5.146 g, 13.92 mmol) according to the procedure described for Intermediate 8, except the mixture was stirred at ambient temperature for 1 h. The mixture was concentrated and diluted with aqueous NH4Cl, water and EtOAc. The organic layer was separated and washed three times with brine, dried over Na2SO4, filtered and concentrated to afford the title compound (5.19 g, 100%) as a cloudy oil.

後処理

  1. concentrationThe mixture was concentrated
  2. additiondiluted with aqueous NH4Cl, water and EtOAc
  3. customThe organic layer was separated
  4. washwashed three times with brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated

出典と根拠

ORDレコード
ord-51f0c8a30e7a4d1a985770e501bd5612
出典データセット
uspto-grants-2016_04
特許番号
US09309245B2

反応ノート

読み込み中…