作者:Nan-Sheng Li、Joseph A. Piccirilli
DOI:10.1021/jo0602165
日期:2006.5.1
2‘-β-Methyl nucleosides have potential value as therapeutic agents and as nucleoside analogues for exploring RNA biology. Here we develop a strategy for efficient synthesis for 2‘-C-β-methylguanosine (3). Starting from 1,2,3,5-tetra-O-benzoyl-2-C-β-methyl-d-ribofuranose (1) and N2-acetylguanine, we obtained the title compound in two steps (78% overall yield) with high stereoselectivity (β/α > 99:1)
2'-β-甲基核苷具有潜在的治疗剂和核苷类似物的潜在价值,可用于探索RNA生物学。在这里,我们开发了有效合成2'- C -β-甲基鸟苷(3)的策略。从开始-1,2,3,5-四ø -苯甲酰基-2- Ç -β甲基d -ribofuranose(1)和Ñ 2 -乙酰基鸟嘌呤中,我们在两个步骤中制得标题化合物(78%总收率)具有高立体选择性(β/α> 99:1)和高区域选择性(N9 / N7> 99:1)。将该策略扩展至鸟嘌呤的经典合成方法还导致高立体选择性(β/α= 99:1)和改善的区域选择性(N9 / N7 = 97:3)。