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。