PROCESSES FOR PREPARING ANHYDROUS AND HYDRATE FORMS OF ANTIHISTAMINIC PIPERIDINE DERIVATIVES, POLYMORPHS AND PSEUDORMOPHS THEREOF

摘要

The present invention is related to novel processes for preparing anhydrous and hydrated forms of piperidine derivatives, polymorphs and pseudomorphs thereof of formulae (I) and (II) which are useful as antihistamines, antiallergic agents and bronchodilators.