4-[3-{6-(3-benzothiazol-5-yl-5-ethoxy-phenoxy)-hexyl}-2-(2-ethoxycarbonyl-ethyl)-phenoxy]-butyric acid ethyl ester 、
sodium hydroxide 以to afford 4-[3-{6-[3-benzothiazol-5-yl-5-ethoxy-phenoxy]-hexyl}-2-(2-carboxy-ethyl)-phenoxy]-butyric acid (9.2 mg, 17%) as a light brown solid的产率得到4-[3-{6-[3-benzothiazol-5-yl-5-ethoxy-phenoxy]-hexyl}-2-(2-carboxy-ethyl)-phenoxy]-butyric acid