An efficient synthesis of l-3,4,5-trioxygenated phenylalanine compounds from l-tyrosine
作者:Ruijiao Chen、Hao Liu、Xiubing Liu、Xiaochuan Chen
DOI:10.1016/j.tet.2013.02.079
日期:2013.4
A new strategy for the synthesis of l-3,4,5-trioxygenated phenylalanine derivatives from l-tyrosine is developed for the first time. The approach, featuring the transformation of aryl diiodide to bis-phenol via a one-pot procedure including lithiation, boronation, and oxidation, is highly practical. By this robust protocol, N-protected l-3,5-bis(tert-butyldimethylsilyloxy)-4-methoxy-phenylalanine and
用于合成的新策略升-3,4,5- trioxygenated从苯丙氨酸衍生物升-酪氨酸被首次开发的。这种方法的特点是通过一锅法(包括锂化,硼化和氧化)将芳基二碘化物转化为双酚,这种方法非常实用。通过该稳健的方案,由N-保护的l -3,5-双(叔丁基二甲基甲硅烷氧基)-4-甲氧基-苯丙氨酸和l -3,4,5-三甲氧基-苯丙氨酸衍生物在9步中用36步从l-酪氨酸获得–40%的整体收益率。