Mesomorphic amino sugars

Abstract
New liquid crystalline compounds have been prepared from glucosamine and 6-amino-6-deoxy-hexopyranoses. The monoalkylated carbohydrates show smectic phases. The influence of the amino group on the clearing temperatures is minor. The salts of the cyclic amines can form smectic or discotic mesophases. The clearing points are lower than those observed for acyclic amines.