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HCID 117928482, Verbindung → 1-[(1S,2S,3S,4R,5S)-2,3,4-tribenzyloxy-5-[4-chloro-3[(4-ethoxyphenyl)methyl]phenyl]-6,8-dioxabicyclo[3.2.1]octane-1-yl]propan-1-ol

HRID 1055506
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Reaktionsgleichung

Reaktionsgleichung von HRID 1055506
[CH2:1]([O:8][C@H:9]1[C@H:15]([O:16][CH2:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[C@@H:14]([O:24][CH2:25][C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[C@:13]2([C:33]3[CH:38]=[CH:37][C:36]([Cl:39])=[C:35]([CH2:40][C:41]4[CH:46]=[CH:45][C:44]([O:47][CH2:48][CH3:49])=[CH:43][CH:42]=4)[CH:34]=3)[O:32][C@@:10]1([CH:50]=[O:51])[CH2:11][O:12]2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH2:52]([Mg]Br)[CH3:53]>O1CCCC1>[CH2:1]([O:8][C@H:9]1[C@H:15]([O:16][CH2:17][C:18]2[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=2)[C@@H:14]([O:24][CH2:25][C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[C@:13]2([C:33]3[CH:38]=[CH:37][C:36]([Cl:39])=[C:35]([CH2:40][C:41]4[CH:42]=[CH:43][C:44]([O:47][CH2:48][CH3:49])=[CH:45][CH:46]=4)[CH:34]=3)[O:32][C@:10]1([CH:50]([OH:51])[CH2:52][CH3:53])[CH2:11][O:12]2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1
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Komponenten

4

Edukt 2

HCID 117928482HCID 117928482, VerbindungHCID 178418443HCID 178418443, Verbindung

Produkt 1

HCID 1183777931-[(1S,2S,3S,4R,5S)-2,3,4-tribenzyloxy-5-[4-chloro-3[(4-ethoxyphenyl)methyl]phenyl]-6,8-dioxabicyclo[3.2.1]octane-1-yl]propan-1-olAusbeute 16 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of (1S,2S,3S,4R,5S)-2,3,4-tribenzyloxy-5-[4-chloro-3-[(4-ethoxyphenyl)methyl]phenyl]-6,8-dioxabicyclo[3.2.1]octane-1-carbaldehyde 1k (0.3 g, 0.43 mmol, obtained from the synthetic method described in step 10 of example 1) in anhydrous tetrahydrofuran (10 mL) was added dropwise ethylmagnesium bromide (1.7 mL, 1.7 mmol, 1M) at 0° C. The mixture was stirred at room temperature for 16 hours, quenched with 2 mL of saturated aqueous ammonium chloride, and extracted with dichloromethane (20 mL×2). The combined organic layers were washed with saturated aqueous sodium chloride (5 mL×2), dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by silica gel chromatography eluted with PE/EtOAc(v/v)=10/1 to give the title compound 3a as colorless oil (48 mg, 16.0%). The compound was characterized by the following spectroscopic data: 1H NMR (400 MHz, CDCl3) δ(ppm): 7.40 (m, 1H), 7.31 (m, 10H), 7.18 (m, 5H), 7.07 (m, 2H), 6.90 (m, 2H), 6.75 (m, 2H), 4.93 (m, 2H), 4.77 (m, 2H), 4.29 (d, 1H), 4.21 (d, 1H), 4.03 (m, 3H), 3.96 (m, 4H), 3.81 (m, 1H), 3.65 (m, 2H), 2.23 (d, 1H), 1.51 (m, 2H), 1.38 (t, 3H), 0.93 (t, 3H).

Aufarbeitung

  1. customquenched with 2 mL of saturated aqueous ammonium chloride
  2. extractionextracted with dichloromethane (20 mL×2)
  3. washThe combined organic layers were washed with saturated aqueous sodium chloride (5 mL×2)
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by silica gel chromatography
  7. washeluted with PE/EtOAc(v/v)=10/1

Quellen und Nachweise

ORD-Eintrag
ord-c0b6a0b20cb64084af1189752ba63afe
Quelldatensatz
uspto-grants-2016_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09394329B2

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