The present invention provides a process for the preparation of desloratadine comprising contacting loratadine with a mixture of a weak inorganic base and sodium or potassium hydroxide in a ratio, ranging from 0.01 to 0.15 equivalents of sodium or potassium hydroxide per equivalent of weak inorganic base, in one or more suitable solvents) followed by isolation.
本发明提供了一种制备去羟基左西替利的方法,包括将左西替利与一种弱
无机碱和
氢氧化钠或
氢氧化钾的混合物接触,比例范围为每个弱
无机碱当量0.01至0.15当量的
氢氧化钠或
氢氧化钾,在一个或多个适当的溶剂中,然后进行分离。