Better late than never! Almost 200 years after Pelletier's pioneering studies on the chemical constituents of red sandalwood, the major santalins and santarubins have been synthesized. This efficient approach integrates a Knochel isoflavonoid synthesis with Friedel–Crafts allylations or olefin metatheses, and a final biomimetic reaction cascade that furnishes the venerable benzoxanthenone dyes in a
迟到总比不到好!在Pelletier对红
檀香的
化学成分进行开创性研究后近200年,已经合成了主要的
檀香木和
檀香木素。这种有效的方法将Knochel异
黄酮合成与Friedel-Crafts烯丙基化或烯烃复分解反应结合在一起,以及最终的仿生反应级联反应,可在一次操作中提供古老的苯并
氧杂蒽酮染料(参见方案)。