<i>N,N</i>-Dimethyldioncophyllinium A Iodide: Synthesis, Stereoanalysis, and Antimalarial Activity of the First<i>N</i>-Quaternary Naphthylisoquinolinium Salt*
作者:Gerhard Bringmann、Michael Ochse、Manuela Schäffer、Ralf God、Rainer Walter、Guido François
DOI:10.1055/s-2006-957760
日期:1997.12
The first synthesis of an N-quaternary salt of a naphthylisoquinoline alkaloid, N,N-dimethyldioncophyllinium A iodide, is described. For this potential natural product, a degradative procedure for the unambiguous stereoanalysis of the stereogenic centers has been elaborated. It shows enhanced anti-plasmodial activity in vitro towards Plasmodium falciparum erythrocytic forms, as compared to its less methylated precursors.
本研究首次合成了一种萘基异喹啉生物碱的 N-季铵盐--N,N-二甲基二月叶碱 A 碘化物。针对这种潜在的天然产物,我们详细阐述了一种降解程序,用于对立体中心进行明确的立体分析。与甲基化程度较低的前体相比,它在体外对恶性疟原虫红细胞形式的抗疟活性更强。
BRINGMANN, GERHARD;LISCH, DIETMAR;REUSCHER, HELMUT;AKE, ASSI LAURENT;GUNT+, PHYTOCHEMISTRY, 30,(1991) N, C. 1307-1310
Atrop-diastereomer separation by racemate resolution techniques: N-methyl-dioncophylline A and its 7-epimer from Ancistrocladus abbreviatus
作者:Gerhard Bringmann、Dietmar Lisch、Helmut Reuscher、Laurent Aké Assi、Kurt Günther
DOI:10.1016/s0031-9422(00)95222-1
日期:1991.1
Abstract The isolation of N -methyl-dioncophylline A and N -methyl-7- epi -dioncophylline A from Ancistrocladus abbreviatus is described. Atrop-diastereomer resolution was achieved analytically on a chiral chromatographic phase, and preparatively after esterification with a chiral carboxylic acid. Structural elucidation assisted by partial synthesis is reported and chemotaxonomic implications of this
摘要 描述了从 Ancistrocladus abbreviatus 中分离 N-甲基-二氢大麻酚 A 和 N-甲基-7-epi-二氢大麻酚 A 的过程。Atrop-非对映体拆分是在手性色谱相上以分析方式实现的,并在与手性羧酸酯化后进行制备。报告了由部分合成辅助的结构阐明,并讨论了从 Ancistrocladus 物种中首次分离出 Dioncophyllaceae 生物碱的化学分类学意义。