Phospholipid-analogous compounds of the general formula (I) in which A is where R1 and R2 are, independently of one another, hydrogen, a saturated or unsaturated acyl or alkyl radical which can optionally be branched or/and substituted, where the total of the carbon atoms in the acyl and alkyl is 16 to 44 carbon atoms, s is an integer from 0 to 8, c is a radical of a primary or secondary alcohol of the formula RO—, where R is a saturated or unsaturated alkyl radical, mainly with cis double bond, of from 12 to 30 carbon atoms, n is an integer from 2 to 8, R3— a can be 1,2-dihydroxypropyl or b can be alkyl with 1 to 3 carbon atoms when z is >0 or c can be alkyl with 1 to 3 carbon atoms when n≠2, and z=0, m is 1 or 2, x is an integer from 0 to 8, y is 1 for z=1 to 5 or is 1 to 4 for z=1, z is an integer from 0 to 5, are novel and are suitable as liposome constituents, solubilizers and pharmaceuticals.