Further Synthetic Studies Towards the Austrodorane Skeleton: Synthesis of Austrodoral
作者:Veaceslav Kulci?ki、Nicon Ungur、Margherita Gavagnin、Marianna Carbone、Guido Cimino
DOI:10.1002/ejoc.200400795
日期:2005.5
The synthesis of austrodoral (1), a marine nor-sesquiterpene that contains a unique bicyclic skeleton, has been achieved. The synthetic strategy is based on the ring contraction of a suitable optically active drimanic epoxy derivative, obtained from commercially available (+)-sclareolide (4). Fluorosulfonic acid was found to promote the ring contraction efficiently. The nor-sesquiterpene hydrocarbon
austrodoral (1) 是一种海洋去甲倍半萜,含有独特的双环骨架,已实现合成。合成策略基于从市售 (+)-sclareolide (4) 获得的合适的光学活性 drimanic 环氧衍生物的环收缩。发现氟磺酸有效地促进环收缩。去甲倍半萜烃 13 是合成倍半萜对苯二酚的关键中间体,也已制备成旋光形式。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)