A novel synthesis of colchicide and analogs from thiocolchicine and congeners: reevaluation of colchicide as a potential antitumor agent
作者:Raymond Dumont、Arnold Brossi、Colin F. Chignell、Frank R. Quinn、Matthew Suffness
DOI:10.1021/jm00387a028
日期:1987.4
Desulfurization of thiocolchicine with Raney nickel in a hydrogen atmosphere yielded tetrahydromethoxycolchicine (2), which was readily separated from unreacted thiocolchicine by chromatography and was smoothly oxidized to 10-demethoxycolchicine (colchicide) by Pd/C in refluxing toluene. Several analogues of colchicide were prepared from the corresponding thiocolchicines by this procedure. Treatment
在氢气氛中用阮内镍对硫代秋水仙碱进行脱硫,得到四氢甲氧基秋水仙碱(2),该四氢甲氧基秋水仙碱易于通过色谱法与未反应的硫代秋水仙碱分离,并在回流的甲苯中通过Pd / C平滑氧化为10-脱甲氧基秋水仙碱(杀菌剂)。通过该方法从相应的硫代秋水仙碱中制备了几种杀菌剂的类似物。用浓硫酸处理杀菌剂,得到2-脱甲基杀菌剂。在微管蛋白结合试验中发现了杀菌剂及其类似物没有活性。有证据表明,较早之前在空中大气中用硫代秋水仙碱和阮内尼制备的助剂被1-2%的硫代秋水仙碱污染。