咖啡酸酯类衍生物的合成及其生物活性研究

目的 设计并合成天然产物咖啡酸的酯类衍生物,并对其进行体外抗脂质代谢紊乱活性的研究.方法 以咖啡酸为原料,通过2条反应路线制得目标化合物,利用HepG2细胞株评价该类化合物的调血脂活性.结果 设计并合成10个咖啡酸酯类衍生物C1～C10,均经波谱技术确证结构.药理结果表明,10个化合物对HepG2细胞呈现不同程度的调血脂活性,其中衍生物C3和C5的调血脂活性明显优于先导物咖啡酸和阳性药辛伐他汀.结论 化合物C5为未见文献报道的咖啡酸类新化合物,初步总结了咖啡酸酯类衍生物调血脂活性方面的构效关系.

Synthesis of caffeic acid ester derivatives and their bioactivities

Objective To design and synthetise the natural products caffeic acid ester derivatives, and to study the lipid metabolic disturbance regulation activity of the derivatives. Methods Applying caffeic acid as material, the target compounds were prepared by two routes and evaluated for antihyperlipidemic effects in HepG2 cells. Results Ten caffeic acid ester derivatives were synthesized, and compound C5 has not yet been reported. The structures of the target compounds were identified by spectrum. Pharmacological results showed that eight derivatives had potency of lipid-regulating in different levels. In particular, compounds C3 and C5 showed significant lipid-regulating effects compared to the lead compound caffeic acid and positive drug Simvastatin. Conclusion Compound C5 is a new caffeic acid ester derivative. The primary structure-activity relationships are discussed in this article.