Utilizing a copper-free Sonogashira reaction in the synthesis of the leukotriene a4 hydrolase modulator batatasin IV
作者:Greg Petruncio、Michael Girgis、Sanae Moummi、Meth Jayatilake、Kyung Hyeon Lee、Mikell Paige
DOI:10.1016/j.tetlet.2020.152547
日期:2020.11
Batatasin IV is a dihydrostilbenoid isolated from Chinese yams which was shown to have inhibitory activities against plant growth. Later studies showed that this compound may exhibit anti-inflammatory properties by inhibiting the epoxide hydrolase activity of the leukotriene A4 hydrolase enzyme. To access the dihydrostilbenoid skeleton, a copper-free SPhos-mediated Sonogashira reaction was conceived
Batatasin IV是从山药中分离出来的一种二氢芪类化合物,具有抑制植物生长的活性。后来的研究表明,该化合物可能通过抑制白三烯A 4的环氧水解酶活性而表现出抗炎特性。水解酶。为了接近二氢类苯酚类骨架,构想了无铜的SPhos介导的Sonogashira反应,并探索了底物范围。我们的结果表明该反应可以耐受游离醇,醛,硝基和苯胺基的存在。但是,带有酸性酚或羧酸基团的取代基的产率明显降低。接下来,结合报道的无铜Sonogashira反应,以16%的总收率完成了batatasin IV的全合成。最后,我们表明,batatasin IV通过白三烯A 4水解酶抑制丙氨酸对硝基苯胺的水解,其IC 50为91.4 µM。