(−)-Neplanocin B, the natural isomer of a component of the neplanocin family was diasteroselectively synthesized from 2,3-O-isopropylidene-d-1,4-ribonolactone. However, when evaluated against several DNA and RNA viruses in cell culture experiments, it did not show any antiviral activity.
The stereospecificsynthesis of (−)-neplanocin F was achieved in 15 steps from 2,3-O-isopropylidene-D-1,4-ribonolactone. The synthetic methodology can give an access through appropriate modifications to new series of carbanucleosides.
(-)-neplanocin F 的立体定向合成是从 2,3-O-异亚丙基-D-1,4-核糖内酯通过 15 个步骤实现的。合成方法可以通过对新系列碳核苷进行适当的修改来获得。