The present invention is a process for the preparation of diphenylazetidinone derivatives of the formula (I) or forms thereof comprising the substituents X, R1 and/or R2 as defined herein. More specifically, the invention comprises methods for the preparation of these compounds by cyclization of certain β-amino carboxamides or β-amino carboxylic esters. These diphenylazetidinone compounds are useful in the treatment of high blood serum cholesterol levels and the maintenance of the reduced cholesterol levels achieved thereby.
本发明涉及一种制备二苯基氮杂
环戊酮衍
生物的方法,其
化学式为(I),或其它形式,其中X、R1和/或R2的取代基如本文所定义。更具体地说,本发明涉及通过环化某些β-
氨基羧酰胺或β-
氨基
羧酸酯的方法制备这些化合物的方法。这些二苯基氮杂
环戊酮化合物可用于治疗高血清
胆固醇水平,并维持由此达到的降低
胆固醇水平。