1-<5'-O-MMTr-3'-C,2'-O-ethylidene-3'-deoxy-3'-dehydro-spiro<3'(S),11-(7(S),10-N-(S)-methyl-9,10-isoxazolidine)>-β-D-ribofuranosyl>thymine 以
水 、
溶剂黄146 为溶剂,
以93%的产率得到1-<3'-C,2'-O-ethylidene-3'-deoxy-3'-dehydro-spiro<3'(S),11-(7(S),10-N-(S)-methyl-9,10-isoxazolidine)>-β-D-ribofuranosyl>thymine