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首页> 外文期刊>Biomolecules & therapeutics >Rapid Identification of Bioactive Compounds Reducing the Production of Amyloid p-Peptide (Ap) from South African Plants Using an Automated HPLC/SPE/HPLC Coupling System
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Rapid Identification of Bioactive Compounds Reducing the Production of Amyloid p-Peptide (Ap) from South African Plants Using an Automated HPLC/SPE/HPLC Coupling System

机译:使用自动HPLC / SPE / HPLC耦合系统快速鉴定减少南非植物淀粉样肽(Ap)产生的生物活性化合物

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摘要

Automated HPLC/SPE/HPLC coupling experiments using the Sepbox system allowed the rapid identification of four bioactive principles reducing the production of amyloid p-peptide (Ap) from two South African plants, Euclea crispa subsp. crispa and Cri-num macowanii. The structures of biologically active compounds isolated from the methanol extract of Euclea crispa subsp. crispa were assigned as 3-oxo-oleanolic acid (1) and natalenone (2) based on their NMR and MS data, while lycorine (3) and hamayne (4) were isolated from the dichloromethane-methanol (1:1) extract of Crinum macowanii. These compounds were shown to inhibit the production of Ap from HeLa cells stably expressing Swedish mutant form of amyloid precursor protein (APPsw).
机译:使用Sepbox系统进行的自动HPLC / SPE / HPLC偶联实验允许快速鉴定四种生物活性成分,从而减少了来自两家南非植物Euclea crispa subsp的淀粉样p肽(Ap)的生产。薄脆饼干和Cri-num macowanii。从Euclea crispa subsp。甲醇提取物中分离的生物活性化合物的结构。根据薄脆片的NMR和MS数据,将薄脆片分别指定为3-氧代-油醇酸(1)和那他酮(2),而从三氯甲烷的二氯甲烷-甲醇(1:1)提取物中分离得到了茄碱(3)和哈马恩(4) crinum macowanii。这些化合物显示可抑制稳定表达淀粉样前体蛋白(APPsw)瑞典突变体形式的HeLa细胞中Ap的产生。

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