The ketone groups of 5-nitrononan-2,8-dione (Figure) can be reduced to the alcohol (OH) function one by one, obtaining a set of isomers of 8-hydroxy-5-nitrononan-2-one, on the one hand, and 5-nitrononan-2,8-diol on the other. Write them all down and say how they are related to each other (enantiomers, diastereoisomers or if they are meso forms).
