Synthesis and Absolute Configuration of Hyperaspine, an Alkaloid of the LadybirdHyperaspis campestris
作者:C�dric Dooms、Pascal Laurent、D�sir� Daloze、Jacques Pasteels、Oldrich Nedved、Jean-Claude Braekman
DOI:10.1002/ejoc.200400804
日期:2005.4
the European Coccinellidae Hyperaspis campestris, isthe first representative of a new type of ladybird alkaloids having a 3-oxaquinolizidine skeleton. A new total synthesis of (±)-hyperaspine starting from protected piperidin-4-one has been achieved. The absolute configuration of the natural alkaloid was unequivocally established to be 3S,4aS,6R,8S by HPLC analyses on a chiral column. (© Wiley-VCH Verlag
Hyperaspine (1a) 是从欧洲瓢虫科 Hyperaspis campestris 中分离出来的,是具有 3-oxaquinolizidine 骨架的新型瓢虫生物碱的第一个代表。已经实现了从受保护的哌啶-4-one 开始的 (±)-hyperaspine 的新全合成。通过手性柱上的 HPLC 分析,天然生物碱的绝对构型明确确定为 3S、4aS、6R、8S。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)