作者:Tommy Johansson、Annika Kers、Jacek Stawinski
DOI:10.1016/s0040-4039(01)00115-0
日期:2001.3
Suitably protected dithymidine H-phosphonates afforded the corresponding dinucleoside 2-pyridylphosphonates upon treatment with N-methoxypyridinium tosylate in acetonitrile in the presence of 1,8-diazabicylo[5.4.0]undec-7-ene (DBU). The reaction was rapid (ca. 5 min), practically quantitative and proceeded stereospecifically, most likely with retention of configuration at the phosphorus centre. (C) 2001 Elsevier Science Ltd. All rights reserved.