Synthesis of cinnamic acid derivatives and their inhibitory effects on LDL-oxidation, acyl-CoA:cholesterol acyltransferase-1 and -2 activity, and decrease of HDL-particle size
作者:Sangku Lee、Jong-Min Han、Hyunjung Kim、Eungsoo Kim、Tae-Sook Jeong、Woo Song Lee、Kyung-Hyun Cho
DOI:10.1016/j.bmcl.2004.06.101
日期:2004.9
A series of cinnamic acid derivatives were synthesized and their biological abilities on lipoprotein metabolism were examined. Among the tested compounds, 4-hydroxycinnamic acid (l-phenylalanine methyl ester) amide (1) and 3,4-dihydroxyhydrocinammic acid (l-aspartic acid dibenzyl ester) amide (2) inhibited human acyl-CoA:cholesterol acyltransferase-1 and -2 activities with apparent IC(50) around 60
合成了一系列肉桂酸衍生物,并研究了其对脂蛋白代谢的生物学能力。在测试的化合物中,4-羟基肉桂酸(1-苯丙氨酸甲酯)酰胺(1)和3,4-二羟基氢氨基甲酸(1-天冬氨酸二苄酯)酰胺(2)抑制人酰基辅酶A:胆固醇酰基转移酶-1和-2活动的表观IC(50)分别约为60和95 microM。化合物1和2还用作抗铜介导的低密度脂蛋白(LDL)氧化的抗氧化剂,表观IC(50)= 52和3 microM,分别为化合物1和2。另外,在LDL存在下,HDL粒径的减小被307 microM终浓度的1抑制。处理1或2不会影响RAW264的正常生长。7没有通过细胞活力测试检测到细胞毒活性。这些结果表明,新的肉桂酸衍生物作为抗动脉粥样硬化剂具有有用的生物学活性,通过两种ACAT抑制细胞胆固醇的存储和运输,抑制LDL-氧化,HDL粒径重排。