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Sodium borohydride → ethyl (2S)-2-(tert-butoxy)-2-{4,24-dimethyl-11,23-dioxa-1,5,7,8-tetraazapentacyclo[22.2.2.16,9.113,17.02,7]triaconta-2,4,6(30),8,13(29),14,16-heptaen-3-yl}acetate

HRID 921211
ノート
印刷プレビュー

反応式

HRID 921211 の反応式
[CH2:1]([O:4][C:5]1([CH3:45])[CH2:10][CH2:9][N:8]([C:11]2[N:16]3[N:17]=[C:18]([CH2:20][O:21][CH2:22][C:23]4[CH:28]=[CH:27][CH:26]=[C:25]([CH2:29][CH2:30][CH:31]=C)[CH:24]=4)[CH:19]=[C:15]3[N:14]=[C:13]([CH3:33])[C:12]=2[C@H:34]([O:40][C:41]([CH3:44])([CH3:43])[CH3:42])[C:35]([O:37][CH2:38][CH3:39])=[O:36])[CH2:7][CH2:6]1)[CH:2]=C.[BH4-].[Na+]>Cl[Ru](=C1N(C2C(C)=CC(C)=CC=2C)CCN1C1C(C)=CC(C)=CC=1C)(Cl)(=CC1C=CC=CC=1)[P](C1CCCCC1)(C1CCCCC1)C1CCCCC1.C(Cl)Cl>[C:41]([O:40][C@@H:34]([C:12]1[C:13]([CH3:33])=[N:14][C:15]2=[CH:19][C:18]3=[N:17][N:16]2[C:11]=1[N:8]1[CH2:7][CH2:6][C:5]([CH3:45])([O:4][CH2:1][CH2:2][CH2:31][CH2:30][CH2:29][C:25]2[CH:24]=[C:23]([CH2:22][O:21][CH2:20]3)[CH:28]=[CH:27][CH:26]=2)[CH2:10][CH2:9]1)[C:35]([O:37][CH2:38][CH3:39])=[O:36])([CH3:43])([CH3:42])[CH3:44]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 2

HCID 4311764Sodium borohydrideHCID 118318862(S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(((3-(but-3-en-1-yl)benzyl)oxy)methyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate

生成物 1

HCID 118318863ethyl (2S)-2-(tert-butoxy)-2-{4,24-dimethyl-11,23-dioxa-1,5,7,8-tetraazapentacyclo[22.2.2.16,9.113,17.02,7]triaconta-2,4,6(30),8,13(29),14,16-heptaen-3-yl}acetate収率 42%

試薬・触媒・溶媒 2

HCID 178425456
HCID 178425456、化合物
触媒
HCID 6344Dichloromethane溶媒

実験手順

A mixture of (S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(((3-(but-3-en-1-yl)benzyl)oxy)methyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate (50 mg, 0.081 mmol) and Grubbs II catalyst (6.86 mg, 8.08 μmol) in DCM (50 mL) was refluxed for 2 h. It was then concentrated and the residue was dissolved in MeOH (3 mL). NaBH4 (15.28 mg, 0.404 mmol) was added and the reaction mixture was stirred at rt for 1 h. It was then quenched with water, extracted with EtOAc. The organic layer was dried over MgSO4, filtered and concentrated. The residue was then purified by biotage, eluting with 25% EtOAc/hexane to isolate ethyl (2S)-2-(tert-butoxy)-2-{4,24-dimethyl-11,23-dioxa-1,5,7,8-tetraazapentacyclo[22.2.2.16,9.113,17.02,7]triaconta-2,4,6(30),8,13(29),14,16-heptaen-3-yl}acetate (20 mg, 0.034 mmol, 41.8% yield) as a white solid. LCMS (M+1)=593.4. 1H NMR (400 MHz, CDCl3) δ 7.36-7.32 (m, 2H), 7.23-7.16 (m, 2H), 6.61 (s, 1H), 5.93 (s, 1H), 4.66 (s, 2H), 4.61-4.52 (m, 2H), 4.34 (td, J=12.3, 2.2 Hz, 1H), 4.27-4.16 (m, 2H), 3.85 (td, J=12.0, 2.2 Hz, 1H), 3.42-3.36 (m, 2H), 3.17 (d, J=11.7 Hz, 1H), 2.81 (dt, J=13.1, 6.3 Hz, 2H), 2.65-2.60 (m, 4H), 2.00 (dd, J=13.7, 2.2 Hz, 1H), 1.89 (dd, J=13.6, 2.1 Hz, 1H), 1.85-1.70 (m, 4H), 1.61-1.43 (m, 4H), 1.26-1.21 (m, 15H).

後処理

  1. temperaturewas refluxed for 2 h
  2. concentrationIt was then concentrated
  3. dissolutionthe residue was dissolved in MeOH (3 mL)
  4. customIt was then quenched with water
  5. extractionextracted with EtOAc
  6. dry with materialThe organic layer was dried over MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customThe residue was then purified by biotage
  10. washeluting with 25% EtOAc/hexane

出典と根拠

ORDレコード
ord-2ebeef31f82045cd8194b5f7f235b5fd
出典データセット
uspto-grants-2016_03
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09273067B2

反応ノート

読み込み中…

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