General syntheses of diterminal diaminodideoxyalditols and 1 -amino-1 -deoxyalditols from aldoses are described. Borane-THF reduction of -0-trimethylsilylaldaramides , followed by methanolic HC1 workup, leads to diaminodideoxyalditol dihydrochlorides . Similar treatment of 0-trimethylsilylaldonamides yields aminoalditol hydrochlorides. reaction sequence was used to synthesize six diaminoalditols and five monoaminoalditols .title aminoalditols and is independent of the chain length and stereochemistry of the starting aldose.