| Rubusuaviins a-f, monomeric and oligomeric ellagitannins from chinese sweet tea and their alpha-amylase inhibitory activity | |
Li, Haizhou; Tanaka, Takashi; Zhang, Ying-Jun ; Yang, Chong-Ren; Kouno, Isao
| |
| 2007-09-01 | |
| 发表期刊 | CHEMICAL & PHARMACEUTICAL BULLETIN
 |
| ISSN | 0009-2363 |
| 卷号 | 55期号:9页码:1325-1331 |
| 摘要 | Six new ellagitannins herein, rubusuaviins A-F, were isolated from the aqueous acetone extract of Chinese sweet tea (Tien-cha, dried leaves of Rubus suavissimus S. LEE) together with seven known tannins. Rubusuaviin A was characterized as 1-O-galloyl-2,3-O-(S)-HHDP-4,6-O-(S)-sanguisorboyl-beta-D-glucopyranose. Rubusuaviins B, C, and E are dimeric, trimeric, and tetrameric ellagitannins, respectively, in which the sanguisorboyl groups were connected ellagitannin units. Rubusuaviins D and F were desgalloyl derivatives of rubusuaviins C and E, respectively. The inhibition of a-amylase activity by rubusuaviins and related ellagitannins was compared. Ellagitannins with beta-galloyl groups at the glucose C-1 positions showed stronger inhibition compared with the alpha-galloyl and desgalloyl compounds. The molecular weight of these compounds was not important for the inhibition of a-amylase activity. |
| 关键词 | Rubus Suavissimus Rosaceae Ellagitannin Amylase Polyphenol Tannin |
| 学科领域 | Chemistry, Medicinal ; Chemistry, Multidisciplinary ; Pharmacology & Pharmacy |
| 收录类别 | SCI ; IC |
| 语种 | 英语 |
| WOS记录号 | WOS:000250493800008 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.kib.ac.cn/handle/151853/2955 |
| 专题 | 植物化学与西部植物资源持续利用国家重点实验室 |
| 作者单位 | 1.Nagasaki Univ, Grad Sch Biomed Sci, Nagasaki 8528521, Japan 2.Chinese Acad Sci, Kunming Inst Bot, Lab Phytochem, Kunming 650204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Haizhou,Tanaka, Takashi,Zhang, Ying-Jun,et al. Rubusuaviins a-f, monomeric and oligomeric ellagitannins from chinese sweet tea and their alpha-amylase inhibitory activity[J]. CHEMICAL & PHARMACEUTICAL BULLETIN,2007,55(9):1325-1331. |
| APA | Li, Haizhou,Tanaka, Takashi,Zhang, Ying-Jun,Yang, Chong-Ren,&Kouno, Isao.(2007).Rubusuaviins a-f, monomeric and oligomeric ellagitannins from chinese sweet tea and their alpha-amylase inhibitory activity.CHEMICAL & PHARMACEUTICAL BULLETIN,55(9),1325-1331. |
| MLA | Li, Haizhou,et al."Rubusuaviins a-f, monomeric and oligomeric ellagitannins from chinese sweet tea and their alpha-amylase inhibitory activity".CHEMICAL & PHARMACEUTICAL BULLETIN 55.9(2007):1325-1331. |
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