作者:Shao-Chien Hsu、Mogili Narsingam、Yi-Fang Lin、Feng-Lin Hsu、Biing-Jiun Uang
DOI:10.1016/j.tet.2013.01.055
日期:2013.3
A practical synthesis of (±)-pterosin A from commercially available 2-bromo-1,3-dimethyl-benzene 5 has been accomplished in 10% overall yield. The synthesis used Suzuki–Miyaura coupling reaction of C6-bromoindanone derivative 3 with potassium vinyltrifluoroborate 9, which provided the corresponding vinylindanone 2 in >85% yield. The vinylindanone 2 could be further elaborated to pterosin A by reduction
由市售的2-溴-1,3-二甲基苯5实际合成(±)-蝶呤A的总产率为10%。合成过程使用C6-溴茚满酮衍生物3与乙烯基三氟硼酸钾9的Suzuki-Miyaura偶联反应,从而以> 85%的收率提供了相应的乙烯基茚满酮2。通过用LAH还原,用TESCl选择性保护伯醇,用硼氢化-乙烯基氧化,用TIPSCl保护伯醇,将仲醇氧化和用TBAF进行甲硅烷基化,可以将乙烯基茚满酮2进一步修饰为蝶呤A。