In the course of our studies aimed at obtaining new drugs for treatment of bone and joint diseases, chemical modification of the potent bone resorption inhibitors justicidins, was performed and various naphthalene lactones, quinoline lactones and quinoline derivatives bearing an azole moiety at the side chain were prepared. Their inhibitory effects on bone resorption were evaluated by Raisz's method, and several compounds, including ethyl 4-(3, 4-dimethoxyphenyl)-6, 7-dimethoxy-2-(1, 2, 4-triazol-1-ylmethyl)quinoline-3-carboxylate (6c, TAK-603), were found to have activities comparable with or superior to the justicidins. The 4-(3-isopropoxy-4-methoxy)-phenyl derivative (6d), in particular, displayed a marked increase in potency. TAK-603 and compound 6d were very effective in preventing osteoclast formation and bone resorption by mature osteoclasts. Further, TAK-603 was shown to be effective in preventing bone loss in ovariectomized mice.
我们的研究旨在获得治疗骨关节疾病的新药物,在研究过程中,我们对强效骨吸收
抑制剂刚烷类化合物进行了
化学修饰,制备出了各种
萘内酯、
喹啉内酯以及侧链含有唑基的
喹啉衍
生物。研究发现,包括 4-(3,4-二
甲氧基苯基)-6,7-二甲氧基-2-(
1,2,4-三唑-1-基甲基)
喹啉-3-羧酸乙酯(6c,TAK-603)在内的几种化合物具有与刚烷类化合物相当或更高的活性。尤其是 4-(3-异丙氧基-4-甲氧基)-苯基衍
生物(6d),其药效明显增强。TAK-603 和化合物 6d 在阻止破骨细胞形成和成熟破骨细胞的骨吸收方面非常有效。此外,TAK-603 还能有效防止卵巢切除小鼠的骨质流失。