A General Synthesis of (.+-.)-Dibenzocyclooctadiene Lignans.
作者:Tetsuya TAKEYA、Shinobu YAMAKI、Toshimasa ITOH、Hiroko HOSOGAI、Seisho TOBINAGA
DOI:10.1248/cpb.44.909
日期:——
We have established a new general synthesis for (±)-dibenzocyclooctadiene lignans, including (±)-schizandrin (1a), (±)-gomisin A (1b), (±)-isoschizandrin (3a), and (±)-isogomisin A (3b), via the spiro-dienone ethers E- and T-11 as the key intermediates, prepared from the corresponding bisarylbutanol derivatives E- and T-10 by the oxidation with Weitz' aminium salt, tris(4-bromophenyl)aminium hexachloroantimonate (BAHA). These syntheses consist of 13 steps from the phenylpropanone 5.
我们建立了(±)-二苯并环辛二烯木脂素的新通用合成方法,包括(±)-五味子素(1a)、(±)-戈米辛A(1b)、(±)-异五味子素(3a)和(±)-异五味子素A(3b)以螺二烯酮醚E-和T-11为关键中间体,由Weitz'铵盐三(4-溴苯基)铵氧化相应的双芳基丁醇衍生物E-和T-10制备六氯锑酸盐(BAHA)。这些合成由苯丙酮 5 开始的 13 个步骤组成。