Non-Phenolic Linear Diarylheptanoids from<i>Curcuma xanthorrhiza</i>: A Novel Type of Topical Anti-Inflammatory Agents: Structure-Activity Relationship
作者:P. Claeson、U. Pongprayoon、T. Sematong、P. Tuchinda、V. Reutrakul、P. Soontornsaratune、W. Taylor
DOI:10.1055/s-2006-957867
日期:1996.6
The topical anti-inflammatory activity of three non-phenolic linear 1,7-diarylheptanoids, previously isolated from a Thai medicinal plant, Curcuma xanthorrhiza (Zingiberaceae) and four new semi-synthetic derivatives of the naturally occurring compounds were assessed in the murine model of ethyl phenylpropiolate-induced ear edema. The naturally occurring compound 1E,3E,1,7-diphenylheptadien-5-one (6) exerted the most potent anti-inflammatory activity, with an ID50 value of similar magnitude to that of the reference drug oxyphenbutazone (67 vs. 46 µg/ear, respectively). None of the semi-synthetic diarylheptanoids was more active than 6. The chemical structures and pharmacological data of the natural and semi-synthetic derivatives identified a distinct structure-activity relationship. The degree of unsaturation in positions 1 and 3, and the nature of the oxygenated functional group in position 5 of the C7-chain were found to play significant roles in determining the observed in vivo activity. Based on these findings, the non-phenolic linear 1,7-diaryl-heptanoids are proposed to represent a novel class of topical anti-inflammatory agents.
三种非酚类线性1,7-二苯基庚烷酮的局部抗炎活性在小鼠模型中进行了评估,该模型以乙基苯丙酰胺引起的耳部水肿为基础。这些化合物之前是在一种泰国药用植物黄姜(Curcuma xanthorrhiza,姜科)中分离出的,并且还评估了四种新的半合成衍生物。自然存在的化合物1E,3E,1,7-二苯基庚烯-5-酮(6)表现出最强的抗炎活性,其ID50值与参考药物氧苯丁酮相似(分别为67与46 µg/耳)。没有任何半合成的二苯基庚烷酮的活性超过6。天然和半合成衍生物的化学结构和药理数据确立了明显的结构-活性关系。发现C7链中1和3号位的未饱和程度,以及5号位的氧化官能团的性质在决定观察到的体内活性中起着重要作用。基于这些发现,非酚类线性1,7-二苯基庚烷酮被建议代表一种新型的局部抗炎药物类。