Synthesis and biological evaluation of novel 2?, 3?, 4?-triply branched carbocyclic nucleosides as potential antiviral agents
作者:Ok Hyun Ko、Joon Hee Hong
DOI:10.1002/ardp.200400918
日期:2004.11
Novel 2′, 3′, 4′‐triply branched carbocyclic nucleosides were synthesized in this study. The introduction of two methyl groups in the 2′‐ and 3′‐position was accomplished by a Horner‐Wadsworth‐Emmons reaction and isopropenyl magnesium bromide addition, respectively. The construction of the required 4′‐quaternary carbon was carried out using a [3, 3]‐sigmatropic rearrangement. Bis‐vinyls were successfully
本研究合成了新型 2 ', 3 ', 4' - 三重支化碳环核苷。在 2'- 和 3'- 位置引入两个甲基分别通过 Horner-Wadsworth-Emmons 反应和异丙烯基溴化镁加成完成。使用 [3, 3] sigmatropic 重排构建所需的 4'-季碳。使用 Grubbs 催化剂 II 成功环化双乙烯基。使用 Pd (0) 催化剂有效地偶联天然碱(腺嘌呤、胞嘧啶)。对合成化合物的抗病毒活性进行了评估,以对抗 HIV-1、HSV-1、HSV-2 和 HCMV。化合物 30 表现出中等的抗 HCMV 活性(EC50 = 30.1 μg/mL),在高达 100 μM 时没有表现出任何细胞毒性。