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Chlorotrimethylsilane → N2-isobutyryl-2'-OMe-guanosine

HRID 1416700
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1416700
[CH3:1][O:2][C@@H:3]1[C@H:7]([OH:8])[C@@H:6]([CH2:9][OH:10])[O:5][C@H:4]1[N:11]1[C:21]2[N:20]=[C:18]([NH2:19])[NH:17][C:15](=[O:16])[C:14]=2[N:13]=[CH:12]1.C[Si](Cl)(C)C.[C:27](Cl)(=[O:31])[CH:28]([CH3:30])[CH3:29].[NH4+].[OH-]>N1C=CC=CC=1.O>[C:27]([NH:19][C:18]1[NH:17][C:15](=[O:16])[C:14]2[N:13]=[CH:12][N:11]([C:21]=2[N:20]=1)[C@@H:4]1[O:5][C@H:6]([CH2:9][OH:10])[C@@H:7]([OH:8])[C@H:3]1[O:2][CH3:1])(=[O:31])[CH:28]([CH3:30])[CH3:29]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

7

Edukt 4

HCID 6397ChlorotrimethylsilaneHCID 14923Ammonium HydroxideHCID 62325Isobutyryl chlorideHCID 1354069502'-O-Methylguanosine

Produkt 1

HCID 135536008N2-isobutyryl-2'-OMe-guanosine

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962
Water
Lösungsmittel
HCID 1049PyridineLösungsmittel

Versuchsvorschrift

2'-O-methylguanosine (3.5 g) in pyridine (100 ml) was treated with trimethylsilyl chloride (9 ml, 6 eq) and isobutyryl chloride (6.2 ml) at RT for 4 hr. The reaction mixture was cooled in an ice bath, H2O (20 ml) was added and stirring continued for an additional 20 min. NH4OH (20 ml) was added and after stirring for 30 min the reaction mixture was evaporated. The residue was triturated with H2O, filtered and the filtrate evaporated and purified by silica gel chromatography as per the procedure of Example 4 to yield the product as an off white solid (1.5 g). 1H NMR (DMSO-d6) δ 1.1 [d, 6, CH(CH3)2 ], 2.77 [m, 1, CH(CH3)2 ], 3.33-3.6 (m, 5, OCH3, H-5'), 3.93 (m, 1, H-4'), 4.22 (m, 1), 4.3 (m, 1), 5.1 (t, 1, 5'-OH), 5.28 (d, 1, 3'-OH), 5.9 (d, 1, H-1'), 8.28 (s, 1, H-8) and 11.9 (br s, 1, NH).

Aufarbeitung

  1. temperatureThe reaction mixture was cooled in an ice bath
  2. stirringafter stirring for 30 min the reaction mixture
  3. customwas evaporated
  4. customThe residue was triturated with H2O
  5. filtrationfiltered
  6. customthe filtrate evaporated
  7. custompurified by silica gel chromatography as per the procedure of Example 4

Quellen und Nachweise

ORD-Eintrag
ord-feee2ebdc6d24a789f1e1e34ee22291a
Quelldatensatz
uspto-grants-1999_06
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US05914396

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