10-[(3RS,4RS)-3-Ethyl-7-hydroxy-3-(4-hydroxyphenyl)thiochroman-4-yl]-2-(7,7,8,8,8-pentafluorooctyl)-decanoic Acid 、
ethyl 2-(7,7,8,8,8-pentafluorooctyl)-9-decenoate 以to give 11-[(3RS,4RS)-3-ethyl-7-hydroxy-3-(4-hydroxyphenyl)thiochroman-4-yl]-2-(7,7,8,8,8-pentafluorooctyl)undecanoic acid的产率得到11-[(3RS,4RS)-3-Ethyl-7-hydroxy-3-(4-hydroxyphenyl)thiochroman-4-yl]-2-(7,7,8,8,8-pentafluorooctyl)-undecanoic Acid