4-[3-[6-(5-ethoxy-biphenyl-3-yloxy)-hexyl]-2-(2-ethoxycarbonyl-ethyl)-phenoxy]-butyric acid ethyl ester 、
sodium hydroxide 以to afford 4-[2-(2-carboxy-ethyl)-3-[6-(5-ethoxy-biphenyl-3-yloxy)-hexyl]-phenoxy]-butyric acid (210 mg, 96%) as a light brown waxy solid的产率得到4-[2-(2-carboxy-ethyl)-3-[6-(5-ethoxy-biphenyl-3-yloxy)-hexyl]-phenoxy]-butyric acid