反应详情

温度

20 °C

2',3',5'-Tri-O-benzoyl-2-chloro-N-[(R)-1-(2-thiazolyl)thio-2-propyl]adenosine (1.2 g, 1.5 mmol) was dissolved in methanolic ammonia (25 ml) (previously saturated at -10° C.) and stirred at 20° C. for 40 h. The reaction mixture was concentrated to an oil at reduced pressure and purified by flash chromatography eluting with a mixture of dichloromethane, ethanol and ammonia (90:10:1), to provide the title 2-chloro-N-[(R)-1-(2-thiazolyl)thio-2-propyl)]adenosine (0.32 g, 46%) as a foam, 1H NMR (DMSO-d6) δ1.31 (3H, d, CHCH3), 3.95 (1H, q, H-4'), 4.12 (1H, q, H-3'), 4.51 (1H, q, H-2'), 5.07 (1H, t, 5'-OH), 5.22, 5.50 (2H, 2d, 2'-and 3'-OH), 5.82 (1H, d, H-1'), 7.63 (1H, d, Ar--H), 7.72 (1H, d, Ar--H), 8.41 (1H, s, H-8), 8.48 (1H, d, N--H).

1. concentrationThe reaction mixture was concentrated to an oil at reduced pressure
2. custompurified by flash chromatography
3. washeluting with a mixture of dichloromethane, ethanol and ammonia (90:10:1)