{3-[2-(1,1-Diphenyl-ethylsulfanyl)-ethyl]-2-hydroxymethyl-benzofuran-7-yloxy}-acetic acid

2-[3-[2-(1,1-diphenylethylsulfonyl)ethyl]-2-hydroxymethylbenzofuran-7-yloxy]acetic acid methyl ester

[3-[2-(1,1-diphenylpropylsulfanyl)ethyl]-2-hydroxymethylbenzofuran-7-yloxy]acetic acid methyl ester

[3-[2-(1,1-diphenylbutylsulfanyl)ethyl]-2-hydroxymethylbenzofuran-7-yloxy]acetic acid methyl ester

{2-hydroxymethyl-3-[2-(2,2,2-trifluoro-1,1-diphenylethylsulfanyl)ethyl]benzofuran-7-yloxy}acetic acid methyl ester