Triethylamine → HCID 22854558, compound

Participants

Reaction Steps

The above 9-(2',3',5'-tri-O-acetyl-β-D-ribofuranosyl)-6-chloro-2-methylthio-9H-purine (1.83 g, 3.9 mmol) was dissolved in dioxan (40 ml) followed by 1-aminopiperidine (0.59 g, 5.85 mmol) and triethyl-amine (1.63 ml, 11.7 mmol). The reaction mixture was stirred at ambient temperature for 18 h, evaporated and purified by flash chromatography on silica gel. Elution initially with dichloromethane, followed by dichloromethane/methanol (100/1) provided 9-(2',3',5'-tri-O-acetyl-β-D-ribofuranosyl)-2-methylthio-6-(1-piperidinyl)-9H-purine (1.24 g, 59%) as a foam. This compound was dissolved in methanolic ammonia (10 ml) and the solution was stirred at room temperature for 18 h, evaporated and purified by flash chromatography on silica gel. Elution initially with dichloromethane, followed by dichloromethane/methanol (19/1) gave 2-methylthio-N-(1-piperidinyl) adenosine (0.67 g, 55%) as a foam, 1H NMR (DMSO-d6) δ 2.51 (3H, s, --SCH3), 3.50-3.56 (1H, m, H-5'a), 3.62-3.68 (1H, m, H-5'b) 3.92 (1H, q, H-4'), 4.15 (1H, q, H-3'), 4.50 (1H, q, H-2'), 5.03 (1H, t, 5'-0H), 5.18, 5.44 (2H, 2d, 2'- and 3'-OH), 5.84 (1H, d, H-1'), 8.24 (1H, s, H-8), 8.84 (1H, s, N--H).

Provenance & Evidence