On the Stability of Sesquiterpene Lactones in the Officinal Arnica Tincture of the German Pharmacopoeia<sup>1</sup>
作者:Thomas J. Schmidt、Uwe Matthiesen、Günter Willuhn
DOI:10.1055/s-2000-8635
日期:2000.10
An investigation of sesquiterpene lactone content in Arnica tincture (German Pharmacopoeia) after storage for three years at different temperatures (+ 4, + 25 and + 30 °C) was carried out by GC and GC-MS analysis. A decrease (13, 32 and 37 %, respectively) in the content of the main active compounds in this preparation, 11α,13-dihydrohelenalin esters, correlating with storage temperature was found. This change was shown to be caused by addition of ethanol to the cyclopentenone structure of these molecules leading to 2-ethoxy-2,3,11,13-tetrahydrohelenalin derivatives.
通过气相色谱和气相色谱-质谱分析,对山金车酊(德国药典)在不同温度(+4、+25和+30°C)下存放三年后的倍半萜内酯含量进行了调查。研究发现,该制剂中主要活性成分11α,13-二氢海伦宁酯的含量分别下降了13%、32%和37%,这与存放温度有关。这种变化是由于在这些分子的环戊烯酮结构中添加了乙醇,导致形成2-乙氧基-2,3,11,13-四氢海伦宁衍生物。