(4R-cis)-6-Aminomethyl-2,2-dimethyl-1,3-dioxane-4-acetic Acid tert-Butyl Ester

6-Amino-2,4,6-trideoxy-3,5-O-(1-methylethylidene)-D-erythro-hexonic Acid 1,1-Dimethylethyl Ester