Isoamyl Nitrite → HCID 14886877, compound

Participants

Reaction Conditions

Reaction Steps

9-(2',3',5'-Tri-O-acetyl-β-D-ribofuranosyl)-2-amino-6-chloro-9H-purine (see Example 9) (4.0 g, 9.3 mmol) was dissolved in acetonitrile (100 ml). Isoamylnitrite (10.84 g, 93 mmol) was introduced followed by methyl disulphide (4.14 ml, 46 mmol) and the reaction mixture was heated at an oil bath temperature of 100° C. for 2 h. The evolved gas was removed via a hypochlorite scrubber. The reaction mixture was cooled, evaporated and purified by flash chromatography on silica gel. Elution initially with dichloromethane, followed by dichloro-methane/methanol (100/1) provided 9-(2',3',5'-tri-O-acetyl-β-D-ribofuranosyl)-6-chloro-2-methylthio-9H-purine (3.1 g, 72%) as a foam, 1H NMR (CDCl3) δ2.12, 2.14, 2.18 (9H, 3s, 2',3' and 5'-O-acetyl CH3), 2.66 (3H, s, --SCH3), 4.28-4.51 (3H, m, H-5'a, H-5' b and H-4'), 5.66 (1H, t, H-3'), 6.0 (1H, t, H-2'), 6.13 (1H, d, H-1'), 8.11 (1H, s, H-8).

Provenance & Evidence