例句 /

Two D-ribofuranose analogues were stereoselectively synthesized by nucleophilic addition to ketose, in the yielding exceeding 80%.

Two D-ribofuranose analogues were stereoselectively synthesized by nucleophilic addition to ketose, in the yielding exceeding 80%.

二、 -位氧化木糖与硝基烷烃化合物反应立体专一性的合成核糖类化合物,得到了两种含有不同 -硝烷基-D-核糖系列化合物,产率达到80%以上。