A simple and efficient method for synthesis of 5-substituted 2′-deoxyuridine nucleosides using metal–halogen exchange reaction of 5-iodo-2′-deoxyuridine sodium salt
作者:Mariko Aso、Toshiyuki Kaneko、Morihide Nakamura、Noboru Koga、Hiroshi Suemune
DOI:10.1039/b301425h
日期:2003.4.16
Treatment of the sodium salt of 2'-deoxy-3', 5'-bis-O-(tert-butyldimethylsilyl)-5-iodouridine (3) with n-BuLi effected regioselective lithiation at the 5-position and the following reaction with various electrophiles afforded 5-substituted 2'-deoxyuridines including 1b, the precursor of stable spin-labeled 1a, in good yields.
用正丁基锂处理2'-脱氧-3',5'-双-O-(叔丁基二甲基甲硅烷基)-5-碘杜里定(3)的钠盐在5位上进行区域选择性锂化,随后与各种亲电试剂以良好的产率提供了包括1b(稳定的自旋标记的1a的前体)在内的5-取代的2'-脱氧尿苷。