Preparation of 1,8-Di-O-alkylaloe-emodins and 15-Amino-, 15-Thiocyano-, and 15-Selenocyanochrysophanol Derivatives from Aloe-Emodin and Studying Their Cytotoxic Effects
作者:Xing-Ri Cui、Kazutoshi Takahashi、Takeshi Shimamura、Jyunichi Koyanagi、Fusao Komada、Setsuo Saito
DOI:10.1248/cpb.56.497
日期:——
1,8-Di-O-alkylaloe-emodin derivatives (namely, methyl-, propyl-, hexyl-, dodecyl-, and octadecyl) were synthesized from naturally occurring aloe-emodin. Further, derivatives having various substituents such as diethylamino, pyrrolidinyl, piperidinyl, methylpiperazinyl, imidazolyl, thiocyano and selenocyano groups at the 15 position of chrysophanol and 1,8-di-O-hexylchrysophanol from aloe-emodin were synthesized. The cytotoxic effects of these derivatives on less P-glycoprotein (P-gp)-expressing HCT 116 cells and stably P-gp-expressing Hep G2 cells were evaluated by performing 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Among these products, several of them exhibited markedly higher potent cytotoxic effects not only on HCT116 cells but also Hep G2 cancer cells as compared to aloe-emodin.
从天然存在的芦荟大黄素出发,合成了1,8-二-O-烷基芦荟大黄素衍生物(即甲基、丙基、己基、十二烷基和十八烷基)。进一步地,从芦荟大黄素合成了一系列在15位具有不同取代基(如二乙基氨基、吡咯烷基、哌啶基、甲基哌嗪基、咪唑基、硫氰基和硒氰基)的蜕皮甾醇和1,8-二-O-己基蜕皮甾醇衍生物。通过3-(4,5-二甲基噻唑-2-基)-2,5-二苯基四唑溴盐(MTT)试验评估了这些衍生物对P-糖蛋白(P-gp)表达较低的HCT 116细胞和稳定表达P-gp的Hep G2细胞的细胞毒性效应。在这些化合物中,有几种不仅对HCT116细胞,而且对Hep G2癌细胞显示出明显更高强效的细胞毒性作用,相比于芦荟大黄素而言。