Synthesis and evaluation of a novel series of heterocyclic oleanolic acid derivatives with anti-osteoclast formation activity
作者:Jun-Feng Li、Yu Zhao、Min-Min Cai、Xiao-Fei Li、Jian-Xin Li
DOI:10.1016/j.ejmech.2008.12.024
日期:2009.7
Oleanolic acid with anti-bone resorption effect was an active component discovered in a medicinal plant of Achyranthes bidentata. A series of heterocyclic derivatives of oleanolic acid including indole, pyrazine, quinoxaline, quinoline moieties and their natural amino acidamides were synthesized. Their inhibitory activity on the formation of osteoclast-like multinucleated cells (OCLs) and cytotoxicity
development of oleanolic acid (OA) based α-glucosidase inhibitors and various OA derivatives showed improved anti-α-glucosidase activity. However, the inhibitory effects of indole infused OA derivatives on α-glucosidase is unknown. Herein, we synthesized a series of indole-OA (2a-2o) and -OA methyl ester (3a-3 l) derivatives with various electron withdrawing groups inducted to indole benzene ring and evaluated
研究工作已针对基于齐墩果酸 (OA) 的 α-葡萄糖苷酶抑制剂的开发,并且各种 OA 衍生物显示出改善的抗α-葡萄糖苷酶活性。然而,吲哚输注的 OA 衍生物对 α-葡萄糖苷酶的抑制作用尚不清楚。在此,我们合成了一系列具有各种吸电子基团的吲哚-OA ( 2a-2o ) 和-OA 甲酯( 3a-3 l ) 衍生物,并评估了它们的抗α-葡萄糖苷酶活性。吲哚衍生物OA(2A - 1-20)相比,OA甲酯衍生物(表现出优异的α葡萄糖苷酶抑制效果图3a - 3升和OA(用IC)50值分别为 4.02 μM-5.30 μM 与超过 10 μM 和 5.52 μM)。此外,使用生物化学(动力学分析)、生物物理(圆二色性)和计算(对接)方法的机理研究表明,OA-吲哚衍生物(2a和2f)是混合类型的 α-葡萄糖苷酶抑制剂,它们的抑制作用归因于它们与α-葡萄糖苷酶形成配体-酶复合物的能力。这项研究的结果支持 OA