The present invention relates to processes for preparing 1-butyl-2-[2'-(2H-tetrazol-5-yl)biphenyl-4-ylmethyl]-1H-indole-3-carboxyli c acid and to intermediates useful in such processes. The present invention also relates to a process for deprotecting compounds containing a protected 2H-tetrazolyl group, which process comprises reacting a the protected compound with a Lewis acid in the presence of a thiol.
本发明涉及制备1-丁基-2-[2'-(2H-
四唑-5-基)
联苯-4-基甲基]-1H-
吲哚-3-
羧酸的过程,以及在这些过程中有用的中间体。本发明还涉及一种去保护含有受保护的2H-
四唑基团的化合物的过程,该过程包括在
硫醇存在下将受保护化合物与
路易斯酸反应。