Method for producing fatty alcohol esters of hydroxycarboxylic acids

1. A fatty alcohol ester of 3-hydroxybutyric acid,

wherein the fatty alcohol ester of 3-hydroxybutyric acid corresponds to the general formula (III′)

wherein the radical R 3 represents a 1-tetradecanyl radical, a 1-hexadecanyl radical, a 1-heptadecanyl radical, a 1-octadecanyl radical, a 1-eicosanyl radical, a 1-docosanyl radical, a 1-tetracosanyl radical, a 1-tricontanyl radical, a cis-9-hexadecen-1-yl radical, a cis-9-octadecen-1-yl radical, a trans-9-octadecen-1-yl radical, a cis-11-octadecen-1-yl radical, a cis,cis-9,12-octadecadien-1-yl radical or a 6,9,12-octadecatrien-1-yl radical.