大花千里光(Senecio ambraceus Turcz.ex DC.)为菊科千里光族千里光属植物,其茎、叶、花、果中蛋白质含量高,我国北部分布广泛,可作为家畜饲料[1]。千里光属植物一般含有吡咯里西啶生物碱,虽有一定的肝毒性和致突变性,导致临床应用谨慎,但因其具有抗癌活性已被作为抗癌药物前体物质开展了人工合成类似物的研究工作。目前关于大花千里光的研究少见报道,报道较多的是千里光属植物的化学成 Senecio ambraceus Turcz.ex DC. Is a plant belonging to the genus Chrysolophus, and has high protein content in stems, leaves, flowers and fruits, and is widely distributed in northern China and can be used as livestock feed [1]. Chrysene plants generally contain pyrrolizidine alkaloids, although a certain degree of hepatotoxicity and mutagenicity, resulting in cautious clinical application, but because of its anti-cancer activity has been carried out as a precursor of anticancer drugs synthetic analogues Research work At present, there are few reports about the researches on Trinidad and Tobago and more reports on the chemistry of Trichosanthes