(2R,3R,4R)-N-benzyloxycarbonyl-3,4-dihydroxy-2-((((S)-1-hydroxypropan-2-yl)amino)methyl)pyrrolidine

(2R,3R,4R)-N-benzyloxycarbonyl-3,4-dihydroxy-2-((((S)-1-hydroxybutan-2-yl)amino)methyl)pyrrolidine

(2R,3R,4R)-N-benzyloxycarbonyl-3,4-dihydroxy-2-((((R)-1-hydroxypentan-2-yl)amino)methyl)pyrrolidine

(2R,3R,4R)-N-benzyloxycarbonyl-3,4-dihydroxy-2-((((R)-1-hydroxy-3-methylbutan-2-yl)-amino)methyl)pyrrolidine

(2R,3R,4R)-N-benzyloxycarbonyl-2-(((1,3-dihydroxypropan-2-yl)amino)methyl)-3,4-dihydroxypyrrolidine