Abstract Secondary metabolites characterization of ethanol extracts of Palicourea sessilis leaves and stems by UPLC-DAD-ESI-MS/MS led to putative identification of hydrolysable tannins in leaf extract (ESI negative mode) while hydroxycinnamic acid amides (HCA) such as N-p-coumaroylputrescine and N-feruloylagmatine were detected in both leaf and stems extracts in the ESI positive mode. Secondary metabolites quantification data showed a higher content of total phenolic in the leaf extract while the total alkaloids contents are statistically equivalent in both of the extracts. Furthermore, monoterpene indole alkaloids were not detected in both extracts. The presence of HCA is here firstly reported for a Palicourea species. This finding increases the classes of secondary metabolites occurring in this genus.

中文翻译：

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通过 UPLC-DAD-ESI-MS/MS 对 Palicourea sessilis 乙醇提取物的去复制揭示了羟基肉桂酸酰胺的存在和单萜吲哚生物碱的缺乏

摘要 通过 UPLC-DAD-ESI-MS/MS 对无花绿豆叶和茎的乙醇提取物进行的次级代谢物表征导致对叶提取物中可水解单宁的推定鉴定（ESI 阴性模式），而羟基肉桂酰胺 (HCA)，如 Np-香豆酰腐胺在 ESI 阳性模式下，在叶和茎提取物中检测到 N-阿魏酰胍丁胺。次级代谢物定量数据显示叶提取物中总酚含量较高，而两种提取物中的总生物碱含量在统计上相当。此外，在两种提取物中均未检测到单萜吲哚生物碱。这里首先报告了 Palicourea 物种中 HCA 的存在。这一发现增加了该属中发生的次生代谢物的类别。