反应详情

2.0 g of 2-chloroadenosine was dissolved in a solution of 20 ml of anhydrous hydrogen sulfide and 1.5 g of sodium metal in 80 ml of dimethylformamide, and the mixture was allowed to react at a temperature of 80°C for 5 hours under anhydrous conditions. The reaction mixture was then diluted with 80 ml of water and neutralized with acetic acid followed by concentration. The resulting concentrate was dissolved in 75 ml of a mixture of n-butanol and water (2:1 by volume), and 25 ml of acetic acid was added to the solution. After allowing the mixture to cool, the precipitated crystals were filtered to obtain 21 g (100% yield) of crude 2-thioadenosine. The product thus-obtained was dissolved in dilute aqueous ammonia and adjusted to a pH of 4 with acetic acid to obtain pure 2-thioadenosine having a melting point of 196° ~ 199°C (with decomposition).

1. customto react at a temperature of 80°C for 5 hours under anhydrous conditions
2. concentrationfollowed by concentration
3. concentrationThe resulting concentrate
4. dissolutionwas dissolved in 75 ml of a mixture of n-butanol and water (2:1 by volume), and 25 ml of acetic acid
5. additionwas added to the solution
6. temperatureto cool
7. filtrationthe precipitated crystals were filtered