目的 合成具有抗肿瘤活性的毛叶假鹰爪素C的B环衍生物。方法 以2,4,6-三羟基苯乙酮为原料,经甲基化、O-甲基化、羟醛缩合3步反应制得目标产物,并以6个人肿瘤细胞株进行抗增殖活性评价。结果 制备了14个目标化合物,其中9个为新化合物。经¹H-NMR、¹³C-NMR,MS确证结构。结论 初步活性研究表明,除1i的目标化合物均具有一定程度的抗肿瘤活性,1h和1n活性优于毛叶假鹰爪素C,B环引入两个F原子对化合物抗肿瘤活性具有一定贡献。

OBJECTIVE To synthesize desmosdumotin C derivatives on B-ring with antitumor activity. METHODS The target compounds were synthesized from 2,4,6-trihydroxyacetophenone via methylation, O-methylation and aldol reaction. Their antiproliferative activities were tested against six human tumor cell lines. RESULTS Fourteen target compounds were synthesized, nine of which were new compounds. All of them were characterized using ¹H-NMR, ¹³C-NMR and MS. CONCLUSION Preliminary pharmacological test showed that all the title compounds except 1i exhibited potent antitumor activities. 1h and 1n were better than desmosdumotin C in vitro. Introducing two fluoro atom on B-ring would benefit its activity against some tumor cells.