Gemcitabine → 4-amino-1-((6aR,8R,9aR)-9,9-difluoro-2,2,4,4-tetraisopropyltetrahydro-6H-furo[3,2-f][1,3,5,2,4]trioxadisilocin-8-yl)pyrimidin-2(1H)-one

HRID 64246

Reaktionsgleichung

Reaktionsgleichung von HRID 64246
[CH:1]1[C:7]([NH2:8])=[N:6][C:4](=[O:5])[N:3]([C@@H:9]2[O:13][C@H:12]([CH2:14][OH:15])[C@@H:11]([OH:16])[C:10]2([F:18])[F:17])[CH:2]=1.Cl[Si:20]([CH:33]([CH3:35])[CH3:34])([CH:30]([CH3:32])[CH3:31])[O:21][Si:22](Cl)([CH:26]([CH3:28])[CH3:27])[CH:23]([CH3:25])[CH3:24]>N1C=CC=CC=1>[NH2:8][C:7]1[CH:1]=[CH:2][N:3]([C@@H:9]2[O:13][C@H:12]3[C@@H:11]([O:16][Si:20]([CH:30]([CH3:32])[CH3:31])([CH:33]([CH3:35])[CH3:34])[O:21][Si:22]([CH:26]([CH3:28])[CH3:27])([CH:23]([CH3:24])[CH3:25])[O:15][CH2:14]3)[C:10]2([F:17])[F:18])[C:4](=[O:5])[N:6]=1

Komponenten

4

Edukt 2

HCID 60750GemcitabineHCID 1724041,3-Dichlorotetraisopropyldisiloxane

Produkt 1

HCID 901365764-amino-1-((6aR,8R,9aR)-9,9-difluoro-2,2,4,4-tetraisopropyltetrahydro-6H-furo[3,2-f][1,3,5,2,4]trioxadisilocin-8-yl)pyrimidin-2(1H)-one

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1049PyridineLösungsmittel

Versuchsvorschrift

As shown above, Gemcitabine (4-amino-1-((2R,4R,5R)-3,3-difluoro-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidin-2(1H)-one) can be treated with 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane (TIPDSiCl2) in dry pyridine to provide 4-amino-1-((6aR,8R,9aR)-9,9-difluoro-2,2,4,4-tetraisopropyltetrahydro-6H-furo[3,2-f][1,3,5,2,4]trioxadisilocin-8-yl)pyrimidin-2(1H)-one. It is contemplated that other 1,3-dihalo-1,1,3,3-tetraalkyldisiloxanes can be used in place of TIPDSiCl2. It is also contemplated that two monofunctional halosiloxane protecting groups can be used in place of the difunctional TIPDSiCl2. Further, it is also contemplated that other hydroxyl protecting groups (e.g., tetrahydropyranyl (THP) or acetyl (Ac)) can be used in place of TIPDSiCl2.

Quellen und Nachweise

ORD-Eintrag
ord-391119ebd8214ccba3a41b7a857c9475
Quelldatensatz
uspto-grants-2016_09
Patentnummer
US09447137B2

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