On the preparation of some phospholipid analogues

Several structural analogues of the biocompatible diacyl glycerol phosphati dylcholine family have been prepared. Considerable variation in structure i s allowed without impairing the desirable biocompatible properties. In part icular, derivatives in which the fatty ester link is replaced by ether link s and in which the central glycerol group is replaced by simple variants su ch as the symmetrical tris(hydroxymethyl)ethane group retain biocompatible properties.