Axially Chiral Dimeric Naphthalene and Naphthoquinone Metabolites, from Root Cultures of the West African Liana<i>Triphyophyllum peltatum</i>
作者:Gerhard Bringmann、Andreas Irmer、Tobias Büttner、Anu Schaumlöffel、Guoliang Zhang、Raina Seupel、Doris Feineis、Karin Fester
DOI:10.1021/acs.jnatprod.6b00439
日期:2016.8.26
triphyoquinoside A (6), and triphyoquinone A (7) were elucidated by spectroscopic analysis (HRESIMS, 1D and 2D NMR) and by application of electronic circular dichroism (ECD) spectroscopy in combination with the exciton chirality method and quantum-chemical ECD calculations. The root cultures likewise produced the known alkaloids dioncophylline A (8), 5′-O-demethyldioncophylline A (9), dioncopeltine A (10), habropetaline
西非藤本植物Triphyophyllum peltatum的根系培养是从体外培养的芽的茎外植体开始的。从这些器官培养物中,分离出三种新的双萘,一种双萘醌和两种(双)萘葡萄糖苷,其取代方式与萘甲异喹啉碱生物碱的取代模式有关,萘酚异喹啉生物碱是象牙草的“正常”主要代谢物。二葡萄糖甙二喹啉甙A(1)和轴向手性联芳基三喹醌A 1(3),A 2(4)和B(5),三喹醌甙A(6)和三喹醌A(7)的结构。)通过光谱分析(HRESIMS,1D和2D NMR)以及电子圆二色性(ECD)光谱与激子手性方法和量子化学ECD计算的结合进行了阐明。根培养物同样产生已知的生物碱二茶碱A(8),5'- O-去甲基二氢茶碱A(9),二灵碱A(10),habropetaline A(11)和5'- O-甲基二氢茶碱D(12a / b) ,萘葡糖苷铅A(2)和萘醌铅瓜(13),地洛酮(14)和8-羟基葡萄糖酮(15)。