This invention relates to novel unsaturated acyclic phosphonate derivatives of certain purine or pyrimidines useful as anti-viral agents and as purine nucleoside phosphorylase inhibitors, to methods and intermediates useful for their preparation and to their end-use application as immunosuppressants, anti-lymphoma, anti-leukemic, anti-viral and antiprotozoal agents and also as agents used in conjunctive therapy to potentiate the efficacy of anti-viral nucleoside analogs which would otherwise become subject to the enzymative action of purine nucleoside phosphorylase.
这项发明涉及一种新型的不饱和无环
膦酸酯衍
生物,属于某些
嘌呤或
嘧啶的抗病毒剂和
嘌呤核苷酸
磷酸化酶
抑制剂,以及用于它们的制备的方法和中间体,以及它们作为
免疫抑制剂、抗淋巴瘤、抗白血病、抗病毒和抗原虫剂的最终应用,还可作为在共同疗法中使用的药物,以增强抗病毒核苷类似物的功效,否则这些类似物会受到
嘌呤核苷酸
磷酸化酶的酶作用。