作者:Lenka Grycová、Dagmar Hulová、Lukáš Maier、Stanislav Standara、Marek Nečas、Filip Lemière、Radovan Kareš、Jiří Dostál、Radek Marek
DOI:10.1002/mrc.2325
日期:2008.12
Adducts of the quaternary protoberberine alkaloids (QPA) berberine, palmatine, and coptisine were prepared with nucleophiles derived from pyrrole, pyrazole, imidazole, and 1,2,4‐triazole. The products, 8‐substituted 7,8‐dihydroprotoberberines, were identified by mass spectrometry and 1D and 2D NMR spectroscopy, including 1H15N shift correlations at natural abundance. In addition, two adducts of QPA
用衍生自吡咯、吡唑、咪唑和 1,2,4-三唑的亲核试剂制备了四元原小檗碱生物碱 (QPA) 小檗碱、巴马汀和黄连碱的加合物。产物,8-取代的 7,8-二氢原小檗碱,通过质谱和 1D 和 2D NMR 光谱进行鉴定,包括在自然丰度下的 1H15N 位移相关性。此外,使用 NMR 数据表征了 QPA 与氯仿和甲硫醇的两种加合物。还介绍了 8-吡咯基-7,8-二氢小檗碱、8-吡咯基-7,8-二氢小檗碱和 8-咪唑基-7,8-二氢小檗碱的单晶 X 射线结构。版权所有 © 2008 John Wiley & Sons, Ltd.