PROBLEM TO BE SOLVED: To easily obtain the subject new compound as a new pseudobiocompound having ceramide-like action from a natural stock. SOLUTION: This new compound is expressed by formula I [R is a 5-50C (hydroxyl-substituted) alkyl or alkenyl; R is a 1-49C (hydroxyl-substituted) alkyl or alkenyl; Y and Y are each H or OH; R and R are each H, a 1-10C alkyl or alkenyl, or joined together into a 1-3C (substituted) alkylene, forming a heterocycle together with a chain lying therebetween], e.g. trans-4-hydroxy-l- proline 1-dodecyl ester. The compound of formula I is obtained by esterifying a hydroxyamino acid (salt) of formula II by the aid of an alcohol of the formula R -OH to form an intermediate of formula III or formula IV (A is an inorganic or organic anion) which in turn is condensed with a compound of the formula R -COX (X is hydroxy, a halogen, etc.).