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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
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Reaktionsgleichung

Reaktionsgleichung von HRID 921211
[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]
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Komponenten

5

Edukt 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

Produkt 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}acetateAusbeute 42 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178425456
HCID 178425456, Verbindung
Katalysator
HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

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).

Aufarbeitung

  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

Quellen und Nachweise

ORD-Eintrag
ord-2ebeef31f82045cd8194b5f7f235b5fd
Quelldatensatz
uspto-grants-2016_03
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09273067B2

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