The invention concerns a method for preparing a compound of formula (I), wherein: R
3
and R
1
represent in particular H and n is greater than 4, said preparation method including performing a Wittig-Horner reaction with a phosphonate on a lactol, so as to obtain a hydroxyester and, optionally a saponification reaction of said hydroxyester.
该发明涉及一种制备式(I)化合物的方法,其中:R3和R1特别代表H,n大于4,该制备方法包括在乳醇上执行Wittig-Horner反应与
膦酸酯,以获得一个羟基酯,以及可选地对该羟基酯进行皂化反应。