| abstract |
The compounds of general formula (I) wherein: R 1 is hydrogen, phenyl, C 1-6 alkyl which can be further substituted with R 3 , R 3 is 5- or 6-membered aromatic or heteroaromatic ring system which can be further substituted with benzyl or hydroxyl groups; R 2 is OR 4 , NHR 4 , R 4 is hydrogen, C 1-6 alkyl or benzyl n is an integer from 1 to 12 or the salts of compounds mentioned which can form gels with commercial fuels, organic solvents and water. |