Synthesis of 7-Deaza-cyclic Adenosine-5′-diphosphate-carbocyclic-ribose and Its 7-Bromo Derivative as Intracellular Ca<sup>2+</sup>-Mobilizing Agents
作者:Satoshi Takano、Takayoshi Tsuzuki、Takashi Murayama、Takashi Sakurai、Hayato Fukuda、Mitsuhiro Arisawa、Satoshi Shuto
DOI:10.1021/acs.joc.5b00723
日期:2015.7.2
Cyclic ADP-carbocyclic-ribose (cADPcR, 3) is a biologically and chemically stable equivalent of cyclic ADP-ribose (cADPR, 1), a Ca2+-mobilizing second messenger. We became interested in the biological activity of the 7-deaza analogues of cADPcR, i.e., 7-deaza-cADPcR (7) and its 7-bromo derivative, i.e., 7-deaza-7-Br-cADPcR (8), because 7-deazaadenosine is an efficient bioisostere of adenosine. The
环状ADP-碳环核糖(cADPcR,3)是生物学上和化学上稳定的等同于动员Ca 2+的第二信使环状ADP-核糖(cADPR,1)。我们对cADPcR的7-deaza类似物(即7-deaza-cADPcR(7)及其7-溴衍生物,即7-deaza-7-Br-cADPcR(8))的生物学活性感兴趣,因为7 -deazaadenosine是腺苷的有效生物等排体。7和8的综合要求我们构造密钥N1-碳环-核糖基-7-脱氮杂腺苷结构。因此,我们开发了一种通过将2,3-二取代的吡咯核苷与胺类缩合来制备N1取代的7-脱氮杂腺苷的一般方法。使用这种方法,我们制备了N 1个碳环核糖基7-脱氮杂腺苷衍生物10a,然后通过Ag +促进的分子内缩合反应从中合成了目标7-deaza-cADPcR(7),以构建18元焦磷酸盐环结构。类似地合成了相应的7-溴衍生物8,它是cADPR的第一个类似物,在7位有取代基。Ca 2+