(2R,3R,4R)-N-benzyloxycarbonyl-2-(((S)-leucineamidyl)methyl)-3,4-dihydroxypyrrolidine

(2R,3R,4R)-3,4-dihydroxy-2-((phenylamino)methyl)pyrrolidine

(2R,3R,4R)-3,4-dihydroxy-2-(1-methyl-1H-benzo[d]imidazol-2-yl)pyrrolidine

(2R,3R,4R)-2-((((R)-1-hydroxypentan-2-yl)amino)methyl)pyrrolidine-3,4-diol

(2R,3R,4R)-2-((((R)-1-hydroxy-3-methylbutan-2-yl)amino)methyl)pyrrolidine-3,4-diol