Is samoquasine A indeed benzo[f]phthalazin-4(3H)-one? Unambiguous, straightforward synthesis of benzo[f]phthalazin-4(3H)-one and its regioisomer benzo[f]phthalazin-1(2H)-one
作者:Katrien Monsieurs、Pál Tapolcsányi、Kristof T.J. Loones、Gábor Neumajer、J.A. Dirk De Ridder、Kees Goubitz、Guy L.F. Lemière、Roger A. Dommisse、Péter Mátyus、Bert U.W. Maes
DOI:10.1016/j.tet.2007.02.031
日期:2007.4
ring closure reaction via a condensation reaction. 1H NMR data of the synthesized compound allowed to establish that the structure of the natural product samoquasine A is not benzo[f]phthalazin-4(3H)-one, as previously suggested.
为了阐明从天然番荔枝种子中分离出来的天然产物萨莫夸宁A的结构,已合成了两种苯并[ f ]酞嗪酮异构体。建立这些骨架所遵循的合成途径是基于在哒嗪酮前体上的两个Suzuki反应和通过缩合反应的闭环反应的结合。如前所述,合成化合物的1 H NMR数据确定天然产物samoquasine A的结构不是苯并[ f ]酞嗪-4(3 H)-one。