Process for the preparation of lipophilic amino acid derivatives, and lipophilic amino acid derivatives

摘要

Lipophilic amino acid derivatives of the formula IMAGE in which R, R' and X have the meaning given, are prepared by reacting an aldoketene dimer of the formula IMAGE with an amino acid ester having a free N-terminus. The compounds of the formula II and other lipophilic amino acid derivatives which are prepared from the compounds of the formula II are suitable for use as adjuvants.