Analogs of antiviral 9-(S)-(3-hydroxy-2-phosphonomethoxypropyl)adenine (HPMPA, I), containing modified purine bases 3-deazaadenine XII, 1-deazaadenine XIV, 7-deaz-7-cyanoaadenine XXXII and 3-deazaguanine XXXVIII, were prepared by alkylation of the bases with synthon XVII, containing preformed structure of the side chain, in the presence of cesium carbonate. The obtained protected derivatives were deblocked successively with sodium methoxide and bromotrimethylsilane to give phosphonic acids XII, XIV, XXXII and XXXVIII. Compounds XII, XIV and XVI were also prepared from (S)- or (R)-9-(2,3-dihydroxypropylderivatives VI, VII and XV by the reaction with chloromethanephosphonyl dichloride, isomerization of the arising 2'- and 3'-chloromethanephosphonates and conversion of the 3'-isomers into the phosphonic acids in alkaline medium. The 3-deaza analog XII was also prepared by ditritylation of VI, reaction with bis(2-propyl) tosyloxymethanephosphonate (XXII), subsequent acid hydrolysis and reaction with bromotrimethylsilane. 3-DeazaHPMPA (XII) is a potent inhibitor of DNA viruses (HSV-1, HSV-2, VZV, CMV) and exhibits activity against Plasmodium sp.
含有改性嘌呤碱基3-去唑腺嘌呤XII、1-去唑腺嘌呤XIV、7-去唑-7-氰基腺嘌呤XXXII和3-去嘧啶嘌呤XXXVIII的抗病毒9-(S)-(3-羟基-2-膦甲氧基丙基)腺嘌呤(HPMPA,I)类似物,通过在铯碳酸盐存在下使用含有侧链预形成结构的合成物XVII烷基化碱基制备而成。所得到的保护衍生物经过连续的甲氧基钠和溴三甲基硅烷去保护处理,形成磷酸XII、XIV、XXXII和XXXVIII。化合物XII、XIV和XVI也可以通过与氯甲酸磷酰二氯化物反应,生成的2'-和3'-氯甲酸磷酸酯异构体的异构化和在碱性介质中将3'-异构体转化为磷酸酯来自(S)-或(R)-9-(2,3-二羟基丙基)衍生物VI、VII和XV制备而成。3-去唑类似物XII也可以通过对VI进行二三甲基苯基化、与双(2-丙基)对甲苯磺酰氧甲基磷酸酯(XXII)反应、随后的酸水解和与溴三甲基硅烷反应制备而成。3-去唑HPMPA(XII)是DNA病毒(HSV-1、HSV-2、VZV、CMV)的有效抑制剂,并且对疟原虫具有活性。