Simple and highly efficient preparation and characterization of (−)-lupanine and (+)-sparteine
作者:Anna K. Przybył、Maciej Kubicki
DOI:10.1016/j.tet.2011.07.080
日期:2011.10
In a simple and convenient way, we have improved the non-chromatographic isolation of optically pure (−)-2-oxosparteine ((−)-lupanine) and (+)-sparteine. The fast and efficient method for the determination of the ee of bisquinolizidine alkaloids has been proposed. A relatively simple simple 1H NMR method has been applied for evaluation of the % ee of enantiomers of the lupanines and sparteines with
通过一种简单方便的方法,我们改进了光学纯的(-)-2-氧代天冬氨酸((-)-Lupanine)和(+)-Sparteine的非色谱分离。提出了一种快速,高效的方法测定双喹啉嗪生物碱的ee。相对简单的1 H NMR方法已被用于评价以手性二苯甲酰基酒石酸为位移试剂的卢潘宁和斯巴汀的对映体的ee%。已测量了极性溶剂中碱和新盐的1 H NMR光谱。 通过手性HPLC法证实了该结果。此外,首次对(-)-鲁潘宁盐进行了X射线分析。改进的双喹喔啉生物碱的提纯方法将极大地促进这些生物碱在不对称反应中用作手性配体和用作药理学工具。
Process for preparing enantiopure Lupanine and Sparteine
申请人:Studiengesellschaft Kohle mbH
公开号:EP2808326A1
公开(公告)日:2014-12-03
The present invention relates to processes for preparing enantiopure Lupanine and Sparteine.
本发明涉及制备对映纯Lupanine和Sparteine的过程。
[EN] PROCESS FOR CONVERTING LUPANINE INTO SPARTEINE<br/>[FR] PROCÉDÉ DE CONVERSION DE LA LUPANINE EN SPARTÉINE
申请人:STUDIENGESELLSCHAFT KOHLE MBH
公开号:WO2014191261A1
公开(公告)日:2014-12-04
The present invention relates to processes for preparing enantiopure Lupanine and Sparteine.
本发明涉及制备对映纯的吕品和斯帕丁的方法。
PROCESS FOR CONVERTING LUPANINE INTO SPARTEINE
申请人:STUDIENGESELLSCHAFT KOHLE MBH
公开号:US20160096840A1
公开(公告)日:2016-04-07
The present invention relates to processes for preparing enantiopure Lupanine and Sparteine.
本发明涉及制备对映纯的狼毒碱和细叶碱的过程。
Molecular mechanism of high pressure action on lupanine
were assigned to lactam group of lupanine and carboxylic group of lupanic acid, respectively. The ring opening reaction of lupanine under HHP is reversible at ambient pressure, as evidenced by CD measurements. A slightly acidic condition induced by HHP causes protonation of lactam group and carbocation is formed, while on the other hand, water molecule as nucleophile attacks electrophilic carbon of lactam