2R,5R-Bis(hydroxymethyl)-3R,4R-dihydroxypyrrolidine (DMDP), also known as 2,5-dideoxy-2,5- imino-D-mannitol.

Potent inhibitor of invertase and a potent glucosidase inhibitor with a different specificity of action to DNJ and castanospermine.

Inhibits glucosidase. Legler, G. et al. Carbohydr. Res., 250, 67, 1993.