Extracts of Pelargonium sidoides, commonly known as EPs® 7630, are produced by extraction of milled roots with 11 % (w/w) ethanol in water. This solvent leads to a spectrum of constituents which differs significantly from extracts obtained by extraction with non-polar solvents. EPs® 7630 is composed of six main groups of constituents, namely unsubstituted and substituted oligomeric prodelphinidins, monomeric and oligomeric carbohydrates, minerals, peptides, purine derivatives and highly substituted benzopyranones. The oligoprodelphinidins, frequently supposed to be compounds with unspecific tanning interactions, show, in contrast to other polyphenols, an amazing variety of substructures and connectivities which results in an uncommon diversity even at a low degree of polymerization. Three distinct purine derivatives, second messengers and probably intermediates of DNA synthesis, were identified and characterized by phytochemical means. The main benzopyranones of EPs® 7630 are highly oxygenated at the phenyl moiety (three to four oxygens) and in addition sulfated at distinct positions. A disulfate of 6,7,8-trihydoxybenzopyranone has been identified for the first time in plants. Taken together, these constituents amount to about 70 to 80 % of the total weight of EPs® 7630, the active ingredient of the phytopharmaceutical Umckaloabo® (Iso Arzneimittel Ettlingen).
通常称为 EPs® 7630 的天竺葵
提取物是用 11%(重量比)
乙醇水溶液萃取磨碎的根茎制成的。这种溶剂产生的成分谱与用非极性溶剂提取的
提取物有很大不同。EPs® 7630 主要由六类成分组成,即未取代和取代的低聚原
豚草素、单体和低聚
碳水化合物、矿物质、肽、
嘌呤衍
生物和高取代的苯并
吡喃酮。低聚
前胡素通常被认为是具有非特异性鞣制相互作用的化合物,但与其他多
酚相比,低聚
前胡素显示出惊人的亚结构和连接性多样性,即使在聚合度较低的情况下,也能产生不同寻常的多样性。通过植物
化学方法,我们发现了三种不同的
嘌呤衍
生物,它们是第二信使,可能是 DNA 合成的中间体。EPs® 7630 的主要苯并
吡喃酮在苯基上高度含氧(三到四个氧原子),此外还在不同位置上
硫化。在植物中首次发现了 6,7,8-三氢
苯并呋喃酮的二
硫酸盐。这些成分加在一起约占植物药 Umckaloabo® (Iso Arzneimittel Ettlingen)的活性成分 EPs® 7630 总重量的 70% 至 80%。