Biodegradable polymers obtained from renewable natural sources are currently receiving increasing attention because they are an alternative to the traditional petroleum??based plastics. In the present communication we describe the synthesis of the diol monomers 2, 3, 4??tri??O??benzyl??l??arabinitol (ABnOH) and 2, 3, 4??tri??O??benzylxylitol (XBnOH), and the diamino monomers 1, 5??diamino??1, 5??dideoxy??2, 3, 4??tri??O??benzyl??l??arabinitol (ABnNH ...