Asmarines are marine alkaloids with the unique N(10)-hydroxytetrahydro[1,4] diazepino[1,2,3-g,h]purine system and interesting biological activity. The heterotricyclic system was prepared from substituted purines. CH-correlations were found to be an easy way to determine the mode of cyclisation in those cases where more than one is possible, that is, obtaining the tetrahydrodiazepinopurine or tetrahydropyrimidopurine
阿斯马林是具有独特的N(10)-羟基四氢[1,4]二氮杂
环庚烷[1,2,3- g,h ]
嘌呤系统和有趣的
生物活性的海洋
生物碱。杂环
三环系统是由取代的
嘌呤制备的。在可能存在不止一种情况的情况下,即获得四氢二氮杂
嘌呤嘌呤或四氢
嘧啶嘌呤系统,发现CH相关性是确定环化模式的简便方法。