In one aspect, the present invention is directed to a one pot method of preparing intermediates of Formula (V), which are useful in making inhibitors of phosphodiesterase-4: The present invention is also directed to a method of preparing phosphodiesterase inhibitors comprising the Formula (IX, IXa)
                            在某个方面,本发明涉及一种制备公式(V)中间体的一锅法,该中间体在制备
磷酸二酯酶-4
抑制剂时非常有用:本发明还涉及一种制备公式(IX,IXa)的
磷酸二酯酶抑制剂的方法。