Polyprenylated benzophenone derivatives with a novel tetracyclo[8.3.1.03,11.05,10]tetradecane core skeleton from Clusia burle-marxii exhibited cytotoxicity against GL-15 glioblastoma-derived human cell line
作者:Caline G. Ferraz、Paulo R. Ribeiro、Édson J. Marques、Renata Mendonça、Maria Lenise S. Guedes、Edilberto R. Silveira、Ramon El-Bachá、Frederico G. Cruz
DOI:10.1016/j.fitote.2019.104346
日期:2019.10
Three new polyprenylated benzophenone derivatives (1-3) were identified in the hexane extract of Clusia burle-marxii trunks, through the isolation and structural elucidation of their methyl derivatives, along with two known polyprenylated benzophenone derivatives sampsonine N (4) and obdeltifolione C (5). Burlemarxiones A (1) and B (2) show an unprecedent tetracyclo[8.3.1.03,11.05,10]tetradecane core
通过Clusia burle-marxii树干的己烷提取物中的甲基衍生物的分离和结构鉴定,鉴定了三个新的多异戊烯基二苯甲酮衍生物(1-3),以及两个已知的多异戊烯基化二苯甲酮衍生物(N)(4)和奥地替利酮C( 5)。Burlemarxiones A(1)和B(2)显示了前所未有的四环[8.3.1.03,11.05,10]十四烷核心骨架。这些化合物是在互变异构平衡中的一对β-二酮,而异丁烯醇(3)是在与nemorosonol互变异构平衡中的各自的β-二酮对。Burlemarxione A甲基衍生物(1a)和sampsonine N对GL-15胶质母细胞瘤衍生的人细胞系具有很强的体外细胞毒活性。