Two New Pyridine Monoterpene Alkaloids by Chemical Conversion of a Commercial Extract of <i>Harpagophytum procumbens</i>
作者:B. Baghdikian、E. Ollivier、R. Faure、L. Debrauwer、P. Rathelot、G. Balansard
DOI:10.1021/np980149c
日期:1999.2.1
harpagide (1), harpagoside (2), or 8-O-p-coumaroylharpagide (3), the main iridoids of Harpagophytum procumbens and Harpagophytum zeyheri, with NH3 and HCl led to aucubinine B(4), a pyridine monoterpene alkaloid (PMTA). A similar procedure applied to a commercial extract of H. procumbens yielded 4 and two new PMTAs named beatrine A (5) and beatrine B (6). The structures of these new PMTAs were established
用NH3和HCl处理Harpagophytum procumbens和Harpagophytum zeyheri的主要虹彩物质harpagide(1),harpagoside(2)或8-O-coumaroylharpagide(3)会产生aucubinine B(4),这是吡啶单萜生物碱(8)。 PMTA)。将类似的程序应用于商业的原腐酸杆菌的提取物,得到了4种和两种新的PMTA,分别命名为Beatrine A(5)和Beatrine B(6)。这些新的PMTA的结构是使用ESIMS和2D NMR建立的。根据反应机理分析了它们的半合成。