Diisopropylethylamine → N2-phenoxyacetyl-5'-O-(4,4'-dimethoxytrityl)-2'-O-(2-cyanoethoxymethyl)guanosine

HRID 2363677Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2363677
[O:1]([CH2:8][C:9]([NH:11][C:12]1[NH:13][C:14](=[O:53])[C:15]2[N:16]=[CH:17][N:18]([C:51]=2[N:52]=1)[C@@H:19]1[O:50][C@H:24]([CH2:25][O:26][C:27]([C:44]2[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=2)([C:36]2[CH:41]=[CH:40][C:39]([O:42][CH3:43])=[CH:38][CH:37]=2)[C:28]2[CH:33]=[CH:32][C:31]([O:34][CH3:35])=[CH:30][CH:29]=2)[C@@H:22]([OH:23])[C@H:20]1[OH:21])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(C(C)C)CC)(C)C.ClCC(C#N)[CH2:66][O:67][CH2:68][CH:69]([C:72]#[N:73])CCl.C(=O)(O)[O-].[Na+]>ClCCCl>[O:1]([CH2:8][C:9]([NH:11][C:12]1[NH:13][C:14](=[O:53])[C:15]2[N:16]=[CH:17][N:18]([C:51]=2[N:52]=1)[C@@H:19]1[O:50][C@H:24]([CH2:25][O:26][C:27]([C:44]2[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=2)([C:36]2[CH:41]=[CH:40][C:39]([O:42][CH3:43])=[CH:38][CH:37]=2)[C:28]2[CH:33]=[CH:32][C:31]([O:34][CH3:35])=[CH:30][CH:29]=2)[C@@H:22]([OH:23])[C@H:20]1[O:21][CH2:66][O:67][CH2:68][CH2:69][C:72]#[N:73])=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Komponenten

6

Edukt 4

HCID 81531DiisopropylethylamineHCID 516892Sodium BicarbonateHCID 86616731Chloromethyl 2-cyanoethyletherHCID 136368406N2-Phenoxyacetyl-5'-O-(4,4'-dimethoxytrityl)guanosine

Produkt 1

HCID 136368405N2-phenoxyacetyl-5'-O-(4,4'-dimethoxytrityl)-2'-O-(2-cyanoethoxymethyl)guanosineAusbeute 48 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 111,2-DichloroethaneLösungsmittel

Versuchsvorschrift

N2-Phenoxyacetyl-5′-O-(4,4′-dimethoxytrityl)guanosine (720 mg, 1 mmol) was dissolved in 4 mL of 1,2-dichloroethane, and 452 mg of diisopropylethylamine (3.5 mmol) was added, and 365 mg of dibutylstannyl dichloride (1.2 mmol) was added subsequently. Then, the reaction was performed at room temperature for 1 hour. Then, the reaction was performed at 80° C., and 155.4 mg of chloromethyl 2-cyanoethylether (1.3 mmol) was added dropwise, and the solution was stirred for 60 minutes. After the reaction completed, the reaction solution was mixed with an aqueous saturated sodium bicarbonate solution, and was subjected to extraction with methylene chloride. The extract was dried over anhydrous magnesium sulfate, and the solvent was distilled off. The obtained mixture was purified by 30 g of silica gel column chromatography to obtain N2-phenoxyacetyl-5′-O-(4,4′-dimethoxytrityl)-2′-O-(2-cyanoethoxymethyl)guanosine (384 mg; yield 48%).

Aufarbeitung

  1. customwas performed at 80° C.
  2. extractionwas subjected to extraction with methylene chloride
  3. dry with materialThe extract was dried over anhydrous magnesium sulfate
  4. distillationthe solvent was distilled off
  5. customThe obtained mixture was purified by 30 g of silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-5201b07a902943ab8bceec0ecda5614a
Quelldatensatz
uspto-grants-2014_04
Patentnummer
US08691970B2

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