Efficient Total Syntheses of Resin Glycosides and Analogues by Ring-Closing Olefin Metathesis
作者:Alois Fürstner、Thomas Müller
DOI:10.1021/ja991361l
日期:1999.9.1
presence of a catalyst formed from Ti(OiPr)4 and bis-(R,R)-trifluoromethanesulfonamide (9)), it was possible to achieve total syntheses of tricolorin A (1), tricolorin G (2), and jalapinolic acid (58) as well as the synthesis of the disaccharidic unit 48 which constitutes a common structural motif of all simonin, operculin, tuguajalapin, orizabin, mammoside, quamoclin, and stoloniferin resin glycosides
概述了一种高效进入天然产物树脂糖苷家族的方法,它利用闭环复分解 (RCM) 的固有模块化特征来形成其大环内酯亚结构。仅从三个容易获得的糖构建块和 (6S)-undec-1-en-6-ol (7)(在由 Ti(OiPr)4 和双形成的催化剂存在下通过对映选择性加成二戊基锌到己烯醛制备-(R,R)-三氟甲磺酰胺(9)),可以实现三色苷A(1)、三色苷G(2)和墨西哥胡椒酸(58)的全合成以及双糖单元48的合成simonin、operculin、tuguajalapin、orizabin、mammoside、quamoclin 和 stoloniferin 树脂糖苷的共同结构基序。此外,这些天然存在的糖脂的各种类似物已经以简单的方式从同一组底物获得。这突出了所选方法和操作的灵活性...