5-N-acetyl-amino-3-(5'-O-tert-butyldimethylsilyl-β-D-ribofuranosyl)-3H,6H-thiazolo[4,5-d]pyrimidine-2,7-dione 、
N,N'-硫羰基二咪唑 以
乙腈 为溶剂,
反应 18.0h,
以67%的产率得到5-N-acetyl-amino-3-(5'-O-tert-butyldimethylsilyl-2',3'-thioxo-β-D-ribofuranosyl)-3H, 6H-thiazolo[4,5-d]pyrimidine-2, 7-dione