Glycolipids of branched chain alkyl oligosaccharides according to this
patent comprise of a primary alcohol branched in the 2-position and an
oligosaccharide, covalently bond to the alcohol in either .alpha.- or
.beta.-linkage (shown in Formula I and Formula II). These compounds show
particularly interesting phase behavior not found for the corresponding
straight chain counterparts. The properties involve an ambient
temperature liquid crystalline appearance and thermotropic liquid crystal
phase polymorphism. Upon the latter, the formation of cubic phases is
considered most interesting with respect to life science applications,
e.g. liposome for drug delivery. Depending on the choice of sugar head
group and alkyl tail, various levels of water miscibility may be adjusted
to meet applications requirements (complete solubility for emulsifier
applications, e.g. cosmetic creams, to limited water swelling only, e.g.
for the preparation of artificial membranes). The closed structural
relationship to natural lipids also make branched chain alkyl
oligosaccharides valuable subjects for biochemical investigations, e.g.
membrane studies. The range of possible applications for glycolipids of
branched chain alkyl oligosaccharides involve material science liquid
crystal applications, e.g, optical switches, as well as surfactants and
the life science applications.