10-[(3RS,4RS)-7-hydroxy-3-(4-hydroxyphenyl)-3-methyl-thiochroman-4-yl]-2-(3,3,4,4,5,5,6,6,6-nonafluorohexyl)decanoic acid 、
ethyl 2-(5,5,6,6,7,7,8,8,8-nonafluorooctyl)-8-nonenoate 以to give 10-[(3RS,4RS)-7-hydroxy-3-(4-hydroxyphenyl)-3-methylthiochroman-4-yl]-2-(5,5,6,6,7,7,8,8,8-nonafluorooctyl)decanoic acid的产率得到10-[(3RS,4RS)-7-hydroxy-3-(4-hydroxyphenyl)-3-methyl-thiochroman-4-yl]-2-(5,5,6,6,7,7,8,8,8-nonafluorooctyl)decanoic acid