申请人:API CORPORATION
公开号:US20150239854A1
公开(公告)日:2015-08-27
The present invention relates to a method of deprotecting a tetrazole compound, useful as an intermediate for angiotensin II receptor blockers, and provides a novel production method of angiotensin II receptor blockers.
Provided is a production method of a compound represented by the formula [3] or [4] or a salt thereof, including (i) reducing a compound represented by the formula [1] or [2] or a salt thereof in the presence of a metal catalyst and an alkaline earth metal salt, or (ii) reacting the compound with a particular amount of Brønsted acid:
wherein each symbol is as defined in the present specification.
本发明涉及一种去保护四唑化合物的方法,该方法作为血管紧张素II受体拮抗剂的中间体,并提供了一种新颖的血管紧张素II受体拮抗剂的生产方法。
提供了一种由式[3]或[4]表示的化合物或其盐的生产方法,包括(i)在金属催化剂和碱土金属盐的存在下还原式[1]或[2]表示的化合物或其盐,或(ii)将该化合物与特定量的Brønsted酸反应:
其中每个符号如本说明书中所定义。