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Dihydrochalcone C-glycosides from Averrhoa carambola leaves

文献类型： 外文期刊

作者： Yang, Yue 1 ; Jia, Xuchao 1 ; Xie, Haihui 1 ; Wei, Xiaoyi 1 ;

作者机构： 1.Chinese Acad Sci, Key Lab South China Agr Plant Mol Anal & Genet Im, South China Bot Garden, Guangdong Prov Key Lab Appl Bot, Guangzhou 510650, Peoples R China

2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

3.Guangdong Acad Agr, Sericultural & Agrifood Res Inst, Guangdong Key Lab Agr Prod Proc, Key Lab Funct Foods,Minist Agr & Rural Affairs, Guangzhou 510610, Peoples R China

4.Chinese Acad Sci, South China Branch Innovat Acad Drug Discovery &, Guangzhou 510650, Peoples R China

关键词： Averrhoa carambola; Oxalidaceae; Star fruit; Leaf; Dihydrochalcone C-Glycoside; Quantitative analysis; Antioxidant activity; Pancreatic lipase inhibition

期刊名称：PHYTOCHEMISTRY （ 影响因子：4.072； 五年影响因子：4.132 ）

ISSN： 0031-9422

年卷期： 2020 年 174 卷

页码：

收录情况： SCI

摘要： Ten undescribed dihydrochalcone C-glycosides, carambolasides R1-R3, S1, S2, T1-T3, 3-hydroxycarambolaside T1, and 3-hydroxycarambolaside P were isolated along with carambolasides I and P from the leaves of Averrhoa carambola L. (Oxalidaceae). Their structures were determined by spectroscopic and chemical methods. Among them, carambolasides P, T1, T2, and I with contents of 22.78, 14.39, 4.93, and 1.87 mg g(-1) dry wt., respectively, were shown to be abundant in the leaves by HPLC analysis. All the compounds showed more potent ABTS radical cation scavenging activity than L-ascorbic acid. 3-Hydroxycarambolaside T1 and 3-hydroxycarambolaside P also demonstrated moderate DPPH radical scavenging activity. Further, carambolaside R3, 3-hydroxycarambolaside T1, and 3-hydroxycarambolaside P exhibited weak in vitro porcine pancreatic lipase inhibitory activity.

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