Diaporthin(1),松胞素4(2)是由一株红树林共生真菌Sporothrix sp.#4335中分离的两个化合物,其结构通过光谱分析确定。并首次对化合物1进行了抗人的肝癌细胞hepG2及抑制人的DNA拓扑异构酶Ⅰ(hTopo Ⅰ)的活性测试,结果显示,化合物1有一定的抗肿瘤活性(IC50 为23μg/mL),及很强地抑制拓扑异构酶Ⅰ的活性。
Diaporthin (1) and cytochalasa 4 (2) were identified by spectroscopic experiments, which isolated from a marine fungus Sporothrix sp. #4335 from the South China Sea. It was found that diaporthin (1) exhibited antitumor activity against hepG2 ( IC50 = 23 μg/mL) and strong inhibition of human DNA topoisomerase Ⅰ.