Enantiodivergent Chemoenzymatic Synthesis of (S)- and (R)-(Z)-9-Dodecyl-4,5,8,9-tetrahydro-3H-oxonin-2-one as Analogues of Topsentolides
作者:Isolde Wetzel、Jurgen Krauss、Franz Bracher
DOI:10.2174/157017812800167466
日期:2012.3.1
(Z)-4,5,8,9-Tetrahydro-3H-oxonin-2-one is the core of naturally occurring topsentolides, cytotoxic oxylipins isolated from a marine sponge of the genus Topsentia. An enantiodivergent approach to topsentolide analogues was worked out with a lipase-catalyzed kinetic resolution of a secondary alcohol and a ring-closing metathesis giving the unsaturated nine-membered lactone as key steps.
(Z)-4,5,8,9-四氢-3H-氧烯-2-酮是天然存在的顶部苯酮的核心,这是一种从顶部菌属的海绵中分离出的细胞毒性氧脂。在顶部苯酮类似物的对映异构体分歧合成中,使用了脂肪酶催化的次级醇的动力学分辨和环闭合交叉烯反应,这两个步骤是关键。