Synthesis and antiviral activity of 3-substituted derivatives of 3,9-dihydro-9-oxo-5H-imidazo[1,2-a]purines, tricyclic analogs of acyclovir and ganciclovir
作者:Jerzy Boryski、Bozenna Golankiewicz、Erik De Clercq
DOI:10.1021/jm00112a010
日期:1991.8
were transformed to their respective tricyclic derivatives, 3-substituted 3,9-dihydro-9-oxo-5H-imidazo[1,2-a]purines 2b, 3a, and 3b. The 6-methyl-substituted compound 2b was obtained following reaction of 1b with bromoacetone. A two-step approach via 1-(2,2-diethoxyethyl) intermediates 4a,b was the most effective for the preparation of the derivatives unsubstituted in the appended ring (3a,b). The
将9-[(2-羟基乙氧基)甲基]鸟嘌呤(阿昔洛韦,1a)和9-[(1,3-二羟基-2-丙氧基)甲基]鸟嘌呤(DHPG,更昔洛韦,1b)转化为其各自的三环衍生物3 -取代的3,9-二氢-9-氧代-5H-咪唑并[1,2-a]嘌呤2b,3a和3b。1b与溴丙酮反应后,得到6-甲基取代的化合物2b。经由1-(2,2-二乙氧基乙基)中间体4a,b的两步法对于制备在环(3a,b)中未被取代的衍生物是最有效的。新型无环核苷,特别是更昔洛韦衍生物2b,被证明对1型和2型单纯疱疹病毒,水痘带状疱疹病毒和巨细胞病毒具有显着活性。