Chrysophanol and 1,8-di-O-hexylchrysophanol derivatives having nucleic acid bases at position 5 were synthesized. Furthermore, derivatives of menadione substituted at position 11 (type A naphthoquinone derivatives) or methylmenadione substituted at position 7 (type B naphthoquinone derivatives) modified with nucleic acid bases, amines and thiocyano, selenocyano or thioacetyl groups were synthesized. The cytotoxic effects of these derivatives on HCT 116 cells, which poorly express P-glycoprotein (P-gp), and Hep G2 cells, which stably express P-gp, were evaluated by performing 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Results were compared with those obtained using 5-fluorouracil (5-FU), which has been used clinically. Several of these derivatives exhibited markedly higher potent cytotoxic effects not only on HCT cancer cells but also Hep G2 cancer cells as compared with 5-FU.
芪二
酚及在第5位具有核酸碱基的1,8-二-O-己基
芪二
酚衍
生物被合成。此外,在第11位取代的
甲萘醌(A型
萘醌衍
生物)或第7位取代的甲基
甲萘醌(B型
萘醌衍
生物)与核酸碱基、胺以及
硫氰酸、
硒氰酸或
硫代乙酰基团修饰的衍
生物也被合成。通过执行3-(
4,5-二甲基噻唑-2-基)-2,5-二苯基
四唑啉
溴(M
TT)实验,评估了这些衍
生物对P-糖蛋白(P-gp)表达较弱的HCT 116细胞以及稳定表达P-gp的Hep G2细胞的细胞毒性效应。结果与临床使用的5-
氟尿
嘧啶(5-FU)获得的结果进行了比较。几种衍
生物不仅对HCT癌细胞,而且对Hep G2癌细胞的细胞毒性效应都明显高于5-FU。