The efficient synthesis of orthogonallyprotectedglycerols, 2-aminopropane-1,3-diols and 2aminobutane-1,4-diols that can constitute useful tools in heterocyclicchemistry, is reported. These interesting tri-functionalized small synthons were easily prepared from serine or aspartic acid. In addition, these substrates can be readily transformed into their iodide derivatives in very good yields.