Studies on Anthracenes. 1. Human Telomerase Inhibition and Lipid Peroxidation of 9-Acyloxy 1,5-Dichloroanthracene Derivatives.
作者:Hsu-Shan HUANG、Jing-Min HWANG、Yee-Min JEN、Jing-Jer LIN、Kung-Yuan LEE、Chang-Hsin SHI、Hsien-Chin HSU
DOI:10.1248/cpb.49.969
日期:——
The synthetically useful approaches to 9-acyloxy 1, 5-dichloroanthracene derivatives are reported. The system selectively reduces the carbonyl group flanked by the peri substituents of the anthracenediones to give the corresponding 1, 5-dichloro-9(10H)-anthracenone. Simple regioselective acylation of anthracenone is applied with appropriate acyl chlorides in CH2Cl2 with catalytic amount of pyridine to give the novel 9-acyloxy 1, 5-dichloroanthracene derivatives. Considerable interest has developed in the mechanism of how anthracenone achieves this desirable selectivity. In an attempt to understand the mechanism of this reaction, solid-state structures of anthracene derivatives have been obtained. In addition, the inhibition of lipid peroxidation in model membranes was determined as was their ability to inhibit the telomere-addition function of the human telomerase enzyme together with their inhibition of the Taq polymerase enzyme. In contrast to (+)-α-tocopherol, 3b, 3c, 3d, 3g, and 3i do not enhance lipid peroxidation in model membranes. Implications for 9-acyloxy 1, 5-dichloroanthracene analogues as potential anticancer agents are discussed.
据报道,存在合成9-酰氧基-1,5-二氯蒽衍生物的有效途径。该体系能够选择性地还原蒽醌中毗连周边取代基的羰基,得到相应的1,5-二氯-9(10H)-蒽酮。通过在CH2Cl2中使用适量酰氯和催化量的吡啶,对蒽酮进行简单的区域选择性酰化反应,得到了新型的9-酰氧基-1,5-二氯蒽衍生物。关于蒽酮如何实现这种理想选择性的机理,引起了相当大的兴趣。为了理解这一反应机理,我们获得了蒽衍生物的固态结构。此外,还测定了它们抑制模型膜中脂质过氧化的能力,以及它们抑制人端粒酶的端粒添加功能和Taq聚合酶酶活性的能力。与(+)-α-生育酚不同,3b、3c、3d、3g和3i在模型膜中并不增强脂质过氧化。本文还讨论了9-酰氧基-1,5-二氯蒽类似物作为潜在抗癌药物的意义。