chemically more stable than the furano lead, but it was shown to be significantly less antivirally active than its parent nucleoside analogue. It was noted to have a 10-fold lower inhibitory activity against the VZV-encoded thymidine kinase. This reduction of activity may be attributed to the different conformation of the sugar and base, as predicted by computational studies and supported by NMR studies
碳环核苷类似物是分解代谢稳定的,因为它们对
嘧啶核苷
磷酸化酶的
磷酸裂解具有抗性。以碳环
2'-脱氧尿苷为起始原料,合成了高效,高选择性的VZV双环核苷类似物(
BCNA)6-
戊基苯基
呋喃[2,3-d]
嘧啶-2'-脱氧
核糖的碳环类似物(C-
BCNA)。 。发现C-
BCNA在
化学上比
呋喃诺
铅更稳定,但已证明其抗病毒活性远低于其母体核苷类似物。注意到对VZV编码的
胸苷激酶的抑制活性降低了10倍。活性的这种降低可以归因于糖和碱的不同构象,如通过计算研究预测并得到NMR研究支持。然而,