configuration of the oxazoline. The efficiency of this total synthesis was excellent, as the syntheses of (S)-1 and (R)-1 from intermediate 7 each proceeded in 13 steps with an overall yield of 6.8%. (S)-1 and (R)-1 were evaluated as chemosensitizers for multidrug-resistant cancers. wuweizisu C - stereoisomer - asymmetric synthesis - biaryls - multidrug resistance - p-glycoprotein
从市售
没食子酸开始,以(-)-形式[(S)-1 ]和(+)-形式[(R)-1 ]的形式合成二苯并
环辛二烯天然产物wuweizisuC 。在关键步骤中,根据
恶唑啉的构型,通过
恶唑啉介导的Ullmann反应构建不对称
联苯轴,以提供68%收率和> 99%de的P或M联芳基产物。该全合成的效率极佳,因为由中间体7合成(S)-1和(R)-1 每种方法分13步进行,总收率为6.8%。(S)-1和(R)-1被评估为对多药耐药性癌症的
化学增敏剂。 wuweizisu C-立体异构体-不对称合成-联芳基-多药耐药性-p糖蛋白