Abstract: The present invention relates to N-acyl derivatives of amino acids and pharmaceutically acceptable salts thereof wherein n is 2 or 3; and R1 represents or pharmaceutically acceptable salts thereof, to novel processes for preparing the same, to use thereof as anti-allergic, anti-anaphylactic, anti-inflammatory and hypolipidemic agents as well as to a pharmaceutical composition comprising the indicated compounds in an efficient amount and to a method for treating allergic and inflammatory diseases and lipid metabolism disorders: bronchial asthma, allergic rhinitis, pollinoses, seasonal and year-round rhinitis, allergic pneumonitis, atopic dermatitis, psoriasis, urticaria, allergic (including anaphylactic) reactions to insect stings and medicaments, cold allergy, allergic conjunctivitis, atherosclerosis, obesity, ischemic heart and cerebral disease, myocardial infarction and stroke.