作者:Branislav Ferko、Marián Zeman、Michele Formica、Sebastián Veselý、Jana Doháňošová、Ján Moncol、Petra Olejníková、Dušan Berkeš、Pavol Jakubec、Darren J. Dixon、Ol’ga Caletková
DOI:10.1021/acs.joc.9b00850
日期:2019.6.7
The first total synthesis of the potent antibiotic berkeleylactone A is described in 10 steps with an overall yield of 9.5%. A key step of our concise route is a late-stage, highly diastereoselective, sulfa-Michael addition. The 16-membered macrocyclic lactone was formed via ring closing metathesis and subsequent chemoselective reduction. The absolute stereochemical configuration was confirmed by single-crystal
以十个步骤描述了有效的抗生素伯克利内酯A的第一个全合成,总收率为9.5%。我们简洁路线的关键步骤是后期非对映选择性高的磺胺-迈克尔加成反应。通过闭环复分解和随后的化学选择性还原形成16元大环内酯。绝对立体化学构型通过单晶X射线分析确认。对几种耐甲氧西林的金黄色葡萄球菌菌株进行了合成伯克内酯A的测试,并验证了其有效的抗菌活性。