Iminosugar
DNJ was modified to produce two derivatives now used as medicines , "N"-hydroxyethyl-DNJ ( miglitol ) for diabetes and "N"-butyl-DNJ ( miglustat ) for Gaucher's disease . 
<triplet> miglustat <subj> Gaucher's disease <obj> medical condition treated <triplet> Gaucher's disease <subj> miglustat <obj> drug used for treatment