An efficient synthesis of anolignan A has been achieved in eight steps in 30% overall yield from piperonal employing TiCl4-mediated addition of a 1-trimethylsilyl-2,3-butadiene to an aldehyde as the key step. (C) 2000 Elsevier Science Ltd. All rights reserved.
An efficient synthesis of anolignan A has been achieved in eight steps in 30% overall yield from piperonal employing TiCl4-mediated addition of a 1-trimethylsilyl-2,3-butadiene to an aldehyde as the key step. (C) 2000 Elsevier Science Ltd. All rights reserved.