反应详情

In analogy to the procedure described in example 120 f], 2-ethoxy-3-(4-hydroxy-benzofuran-7-yl)-propionic acid methyl ester (example 120 e]) was reacted with 2-(4-tert-butyl-phenyl)-4-chloromethyl-5-methyl-oxazole in the presence of potassium carbonate and potassium iodide to yield [rac]-3-{4-[2-(4-tert-butyl-phenyl)-5-methyl-oxazol-4-ylmethoxy]-benzofuran-7-yl}-2-ethoxy-propionic acid methyl ester, which was further saponified in analogy to the procedure described in example 120 f] to yield [rac]-3-{4-[2-(4-tert-butyl-phenyl)-5-methyl-oxazol-4-ylmethoxy]-benzofuran-7-yl}-2-ethoxy-propionic acid as white solid.