Synthesis of novel 3′-C-methyl-apionucleosides: an asymmetric construction of a quaternary carbon by Claisen rearrangement
作者:Joon H. Hong、Mu-Yun Gao、Yongseok Choi、Yung-Chi Cheng、Raymond F. Schinazi、Chung K. Chu
DOI:10.1016/s0008-6215(00)00005-7
日期:2000.8
The synthesis of 2,3-dideoxy-3-C-(hydroxymethyl)-3-C-methyl-D-glycero-tetrofuranosyl++ + nucleosides was accomplished in high enatiomeric purity (98.5% ee) via [3,3]-sigmatropic Claisen rearrangement of (E)(S)-5-benzyloxy-1-tert-butyldimethylsilanyloxy-4-methyl-pent-3- en-2-ol prepared from 2,3-O-isopropylidene-D-glyceraldehyde. The synthesized nucleosides were assayed against human immunodeficiency
2,3-二脱氧-3-C-(羟甲基)-3-C-甲基-D-甘油-呋喃呋喃糖基++ +核苷的合成是通过[3,3]-σ克莱森体系以高对映体纯度(98.5%ee)完成。由2,3-O-异亚丙基-D-甘油醛制得的(E)(S)-5-苄氧基-1-叔丁基二甲基甲硅烷基氧基-4-甲基-戊-3-烯-2-醇的重排。分别在人外周血单核细胞(PBM)和2.2.15细胞中检测合成的核苷抗人免疫缺陷病毒(HIV)和乙型肝炎病毒。6-氨基-9- [2,3-二脱氧-3-C-(羟甲基)-3-C-甲基-β-D-甘油-四呋喃糖基] -2-氟嘌呤显示出中等的抗病毒活性(EC50 = 2.55 microM) HIV-1菌株和6-氨基-9- [3-脱氧-3-C-(羟甲基)-3-甲基-α-D-甘油-呋喃呋喃糖基] -2-氟嘌呤表现出有效的抗HIV活性(EC50 = 0。