Hydrochloric Acid → 6-Amino-2-[(2-cyclopropylethyl)oxy]-9-(tetrahydro-2H-pyran-4-ylmethyl)-7,9-dihydro-8H-Purin-8-one

2-[(2-Cyclopropylethyl)oxy]-8-(methoxy)-9-(tetrahydro-2H-pyran-4-ylmethyl)-9H-purin-6-amine (0.1259 g) was dissolved in methanol (5 mL) and added 4N hydrogen chloride in 1,4-dioxane (2 mL). The reaction was stirred at room temperature for 4 hours. The reaction mixture was evaporated under reduced pressure to give a solid which was then suspended in water (1 mL) and small quantity of methanol (2-3 mL). This was then neutralised (to pH 7) by the addition of 2N sodium hydroxide. The suspension was evaporated to near dryness under reduced pressure and then suspended the solid in water (3 mL). The solid was filtered off under suction and washed with a few drops of methanol before being air-dried under suction. This material was then dried to constant weight under vacuo at 50° C. to give the title compound (94 mg).

1. customThe reaction mixture was evaporated under reduced pressure
2. customto give a solid which
3. customThe suspension was evaporated
4. filtrationThe solid was filtered off under suction
5. washwashed with a few drops of methanol
6. custombefore being air-dried under suction
7. customThis material was then dried to constant weight under vacuo at 50° C.

ORD-Eintrag

ord-da2d59cc97ee47018348c530fe9111c8

Quelldatensatz

uspto-grants-2011_07

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07977344B2