The present invention relates to a novel process for the preparation of pure Ebastine and use of the same in formulation without micronising. The invention further relates to the process of preparation of 1 -[4-(1, 1 -dimethyl ethyl) phenyl] -4-(4-hydroxy piperidin-1-yl) butan-1-one (compound II), an intermediate or preparation of Ebastine and use of the same in the preparation of pure Ebastine with the maximum particle size more than 1000 μm and D90 from 250 μm -1000 μm.
                            本发明涉及一种用于制备纯艾必舒丁且无需微粉化的新型工艺,以及在配方中使用该工艺。该发明还涉及制备1-[4-(
1,1-二甲基乙基)苯基]-4-(
4-羟基哌啶-1-基)
丁酮(化合物II)的工艺,该化合物是艾必舒丁的中间体或制备物,并且在制备纯艾必舒丁时,其最大粒径大于1000微米,D90值在250微米至1000微米之间。