rac-2-Ethoxy-3-(2-methyl-1H-indol-5-yl)-propionic acid ethyl ester 、
2-(5-甲基-2-苯基-1,3-恶唑-4-基)乙基甲烷磺酸酯 以to give rac-2-ethoxy-3-{2-methyl-1-[2-(5-methyl-2-phenyl-oxazol-4-yl)-ethyl]-1H-indol-5-yl}-propionic acid as light yellow viscous oil的产率得到rac-2-ethoxy-3-{2-methyl-1-[2-(5-methyl-2-phenyl-oxazol-4-yl)-ethyl]-1H-indol-5-yl}-propionic acid