| 摘要 |
A) Compounds selected from the group consisting of a compound of the formula <IMAGE> I wherein U is <IMAGE> m and n are individually 1 or 2 of one, the dotted lines is a single double bond optionally of cis or trans configuration, a is selected from the group consisting of hydrogen, methyl and methylene, Y is selected from the group consisting of hydrogen, residue of an amino acid with an alpha -or omega -carboxyl and a peptide or 2,3 or 4 amino acids with the amine optionally acylated with an optionally unsaturated aliphatic carboxylic acid of 6 to 24 carbon atoms or alkylated with alkyl of 1 to 8 carbon atoms, R is selected from the group consisting of hydrogen, alkyl of 1 to 8 carbon, alkenyl and alkynyl of 2 to 8 carbon atoms optionally substituted with at least one halogen with the proviso that if Y is hydrogen, alanine or proline and if a is hydrogen, U contains a double bond; and B) their non-toxic, pharmaceutically acceptable salts with bases or acids, the alkyl esters of 1 to 6 carbon atoms and their primary and secondary amides having remarkable immunomodulatric properties and anti-bacterial activity.
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