1-(2-deoxy-3-O-tert-butyldiphenylsilyl-β-D-erythro-pentadialdo-1,4-furanosyl)-5-methyluracil 、
1,3-dithia-2-cyclohexylidene triphenylphosphorane 以
四氢呋喃 为溶剂,
以80%的产率得到1-[(2R,4S,5R)-4-(tert-Butyl-diphenyl-silanyloxy)-5-[1,3]dithian-2-ylidenemethyl-tetrahydro-furan-2-yl]-5-methyl-1H-pyrimidine-2,4-dione