Stemodin-derived analogues with lipid peroxidation, cyclooxygenase enzymes and human tumour cell proliferation inhibitory activities
作者:Floyd A. Russell、Vanisree Mulabagal、Dwayne R. Thompson、Marvadeen A. Singh-Wilmot、William F. Reynolds、Muraleedharan G. Nair、Vratislav Langer、Paul B. Reese
DOI:10.1016/j.phytochem.2011.08.024
日期:2011.12
mainly dibrominated abeo-stachanes. Solvolysis of the dibromo compounds gave products of hydrolysis, some with rearranged skeleta. In the lipid peroxidation inhibitory assay three of the compounds exhibited prominent activity. Interestingly, all the analogues showed higher COX-1 enzyme inhibition than COX-2. Although a few of the diterpenes limited the growth of some human tumour cell lines, most compounds
制备了一系列源自抗病毒和细胞毒性二萜类化合物的类似物,并评估了它们的脂质过氧化 (LPO)、环氧合酶-1 (COX-1) 和-2 (COX-2) 以及肿瘤细胞增殖抑制活性. 大黄素的氧化产生大黄酮,然后将其转化为大黄素-12-en-2-one。后者在 Petrow 条件(溴;醋酸银/吡啶)下的反应主要产生二溴化的 abeo-stachanes。二溴化合物的溶剂分解产生水解产物,其中一些具有重新排列的骨架。在脂质过氧化抑制试验中,三种化合物表现出显着的活性。有趣的是,所有类似物都显示出比 COX-2 更高的 COX-1 酶抑制。尽管一些二萜限制了一些人类肿瘤细胞系的生长,