Cyclisation of terpenylnaphthohydroquinone derivatives or terpenylquinone cycloadducts, obtained from methyl myrcecommunate, was performed in the presence of HI, I-2 or BF3 center dot OEt2 and provides efficient synthetic strategies for the preparation of pentacyclic terpenylquinones. (C) 2011 Elsevier Ltd. All rights reserved.
Cyclisation of terpenylnaphthohydroquinone derivatives or terpenylquinone cycloadducts, obtained from methyl myrcecommunate, was performed in the presence of HI, I-2 or BF3 center dot OEt2 and provides efficient synthetic strategies for the preparation of pentacyclic terpenylquinones. (C) 2011 Elsevier Ltd. All rights reserved.