2-deoxy-2-fluoro-2-C-ethynyl-β-D-erythro-furanosyl-guanosine 、
triethylammonium 2-(2,2-dimethyl-3-(trityloxy)propanoylthio)ethyl phosphonate 在
三甲基乙酰氯 作用下,
以
吡啶 为溶剂,
反应 2.0h,
以28%的产率得到{9-[(2R)2-deoxy-2-fluoro-2-C-ethynyl-β-D-erythro-furanosyl]-guanin}-5'-yl-0-(triphenylmethyloxy-tert-butyl-5-acyl-2-thioethyl)-H-phosphonate