Facile conversion of 4-endo-hydroxy-2-oxabicyclo[3.3.0]oct-7-en-3-one into carbocyclic 2′-deoxyribonucleoside analogues
作者:Anupma Dhanda、Lars J. S. Knutsen、May-Britt Nielsen、Stanley M. Roberts、David R. Varley
DOI:10.1039/a906464h
日期:——
furnish the bromoacetates 14–18 in good yields. A plausible explanation for the observed selectivity is proposed. Hydrodebromination of compounds 14, 17, 18 and 19 provided the corresponding 2′-deoxyribonucleoside analogues 20–23.
易于获得的3,5-顺式双取代的环戊烯9-13与N-溴丁二酰亚胺(或N-溴乙酰胺)和乙酸银在冰醋酸中以高度立体选择性的方式反应,以高收率提供溴乙酸酯14-18。对于观察到的选择性提出了合理的解释。化合物14、17、18和19的加氢脱溴作用提供了相应的2'-脱氧核糖核苷类似物20-23。