The known blood platelet reducing agent Anagrelide is prepared via an improved process starting with commercially available 2,3-dichlorotoluene and involving novel intermediates represented by the formulas: ##STR1## wherein Y is Br, Cl or I. Compound (G) is reacted with ethyl glycine to form the well-known intermediate ethyl-N-(2,3-dichloro-6-nitro benzyl) glycine which is then used following conventional process steps to form Anagrelide.
已知的血小板减少剂Anagrelide是通过一个改进的过程制备的,该过程以商业上可获得的
2,3-二氯甲苯为起始物,并涉及由以下公式表示的新型中间体:其中Y是Br、Cl或I。化合物(G)与乙基甘
氨酸反应,形成众所周知的中间体乙基-N-(2,3-二
氯-6-硝基苄)甘
氨酸,然后按照常规工艺步骤形成Anagrelide。