Synthesis of pyrrolizidine alkaloids indicine, intermedine, lycopsamine, and analogs and their N-oxides. Potential antitumor agents
作者:Leon H. Zalkow、Jan A. Glinski、Leslie T. Gelbaum、Thomas J. Fleischmann、Laureen S. McGowan、Maureen M. Gordon
DOI:10.1021/jm00383a001
日期:1985.6
(-)- and (+)-trachelanthic and (-)- and (+)-viridifloric acids were synthesized and their isopropylidene derivatives were regiospecifically coupled, at C-9, with (-)-retronecine obtained by hydrolysis of monocrotaline, isolated from Crotalaria spectabilis. Hydrolysis, followed by oxidation, led to the N-oxides of indicine, intermedine, lycopsamine, and the new nonnatural product, respectively. Each
合成了(-)-和(+)-四氢邻苯二甲酸以及(-)-和(+)-viridifloric酸,并在C-9上将它们的异亚丙基衍生物与(-)-维甲酸合成,后者通过单芥子碱的水解获得,分离。来自猪屎豆。水解,然后氧化,分别导致了茚满,中间药物,番茄红素和新的非天然产物的N-氧化物。在P388淋巴细胞性白血病系统中同时筛选N-氧化氮,对每种类似物进行筛选,并对结果进行比较。制备了其他相关类似物,并进行了类似的筛选,并将结果与N-氧化铟的结果进行了比较。