Seven antioxidative serotonin derivatives were isolated from safflower (Carthamus tinctorius L.) oil cake. Their structures were established as N-[2-(5-hydroxy-1H-indol-3-yl)ethyl]ferulamide (1), N-[2-(5-hydroxy-1H-indol-3-yl)ethyl]-p-coumaramide (2), N,N'-[2,2'-(5,5'-dihydroxy-4,4'-bi-1H-indol-3,3'-yl)diethyl]- di-p-coumaramide (3), N-[2-[3'-[2-(p-coumaramido)ethyl]-5,5'-dihydroxy- 4,4'-bi-1H-indol-3-yl]ethyl]ferulamide (4), and N,N'-[2,2'-(5,5'-dihydroxy-4,4'-bi-1H-indol-3,3'-yl)diethyl]- diferulamide (5), N-[2-[5-(beta-D-glucosyloxy)-1H-indol-3-yl)ethyl]- p-coumaramide (6), and N-[2-[5-(beta-D-glucosyloxy)-1H-indol-3-yl)ethyl]ferulamide (7). Antioxidative activities of the compounds were measured by the ferric thiocyanate method and the alpha,alpha-diphenyl-beta-picrylhydrazyl (DPPH) method, and compounds 1-5 were found to have relatively strong antioxidative activity.

中文翻译：

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从红花（Carthamus tinctorius L.）油饼中分离出的抗氧化化合物。

从红花（Carthamus tinctorius L.）油饼中分离出七种抗氧化血清素衍生物。它们的结构被确定为N- [2-（5-羟基-1H-吲哚-3-基）乙基]阿魏酰胺（1），N- [2-（5-羟基-1H-吲哚-3-基）乙基]。 -对-香豆酰胺（2），N，N'-[2,2'-（5,5'-二羟基-4,4'-bi-1H-吲哚-3,3'-基）二乙基]-二-对-香豆酰胺（3），N- [2- [3'-[2-（对-香豆酰胺基）乙基] -5,5'-二羟基-4,4'-bi-1H-吲哚-3-基]乙基]阿魏酰胺（4）和N，N'-[2,2'-（5,5'-二羟基-4,4'-bi-1H-吲哚-3,3'-基）二乙基]-二阿魏酰胺（5 ），N- [2- [5-（β-D-葡糖氧基）-1H-吲哚-3-基）乙基]-对香豆酰胺（6）和N- [2- [5-（β-D- （葡糖氧基）-1H-吲哚-3-基）乙基]阿魏酰胺（7）。化合物的抗氧化活性通过硫氰酸铁方法和α，α-二苯基-β-甲基吡啶并（DPPH）方法进行测定，