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论文 |
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论文题目: |
Multidrug resistance-selective antiproliferative activity of Piper amide alkaloids and synthetic analogues
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论文题目英文: |
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作者: |
Wang, Yue-Hu; Goto, Masuo; Wang, Li-Ting; Hsieh, Kan-Yen; Morris-Natschke, Susan L.; Tang, Gui-Hua; Long, Chun-Lin; Lee, Kuo-Hsiung
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论文出处: |
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年: |
2014
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卷: |
24 |
期: |
20 |
页: |
4818-4821 |
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发表期刊: |
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS |
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收录类别: |
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影响因子: |
2.531
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摘要: |
Twenty-five amide alkaloids (1-25) from Piper boehmeriifolium and 10 synthetic amide alkaloid derivatives (39-48) were evaluated for antiproliferative activity against eight human tumor cell lines, including chemosensitive and multidrug-resistant (MDR) cell lines. The results suggested tumor type-selectivity. 1-[7-(3,4,5-Trimethoxyphenyl) heptanoyl] piperidine (46) exhibited the best inhibitory activity (IC50 = 4.94 mu M) against the P-glycoprotein (P-gp)-overexpressing KBvin MDR sub-line, while it and all other tested compounds, except 9, were inactive (IC50 > 40 mu M) against MDA-MB-231 and SK-BR-3. Structure-activity relationships (SARs) indicated that (i) 3,4,5-trimethoxy phenyl substitution is critical for selectivity against KBvin, (ii) the 4-methoxy group in this pattern is crucial for antiproliferative activity, (iii) double bonds in the side chain are not needed for activity, and (iv), in arylalkenylacyl amide alkaloids, replacement of an isobutylamino group with pyrrolidin-1-yl or piperidin-1-yl significantly improved activity. Further study on Piper amides is warranted, particularly whether side chain length affects the ability to overcome the MDR cancer phenotype. (C) 2014 Elsevier Ltd. All rights reserved. |
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