作者:Virginia V. Triantakonstanti、Olga G. Mountanea、Kyriaki-Eleni C. Papoulidou、Thanos Andreou、Theocharis V. Koftis、John K. Gallos
DOI:10.1016/j.tet.2018.08.005
日期:2018.9
A new method for the diastereoselective synthesis of enantiomerically pure ertugliflozin was developed. The crucial step involves an aldol condensation between 1-(4-chloro-3-(4-ethoxybenzyl)phenyl)ethanone and (4R,5R)-5-(((tert-butyldimethylsilyl)oxy)methyl)-2,2-dimethyl-5-((trityloxy)methyl)-1,3-dioxolane-4-carbaldehyde, which was prepared from known 2-C-trityloxymethyl-2,3-O-isopropylidene-l-erythrose
开发了一种新的非对映异构纯对映体Ertugliflozin合成的方法。关键步骤涉及1-(4-氯-3-(4-乙氧基苄基)苯基)乙酮与(4R,5R)-5-((((叔丁基二甲基甲硅烷基)氧基)甲基)-2,2-之间的醛醇缩合由已知的2-C-三苯甲基氧甲基-2,3- O-异亚丙基-1-赤藓糖制备的二甲基-5-((三苯甲氧基)甲基)-1,3-二氧戊环-4-甲醛(可从三步轻松获得(1-阿拉伯糖)通过标准的还原/氧化和保护/脱保护操作。羟醛缩合产物的二羟基化和进一步的整体脱保护导致靶分子的形成。