Synthesis and cytotoxic activity of hydroxylated derivatives of olivacine in relation with their biotransformation
作者:M. Maftouh、R. Besselievre、B. Monsarrat、P. Lesca、B. Meunier、H. P. Husson、C. Paoletti
DOI:10.1021/jm00383a004
日期:1985.6
to 2.03 microM for olivacine) and an opposite effect is observed for hydroxylation at position 7 (ID50 = 12.8 microM). On the other hand, hydroxylation at position 9 has no effect on the in vivo antitumor activity against L1210. This might be related to the oxidative and conjugative metabolic pathways that play an important role in antitumor activity and deactivation of olivacine and its hydroxy metabolites
描述了基于仿生方法的化学合成9-羟基寡糖和7-羟基寡糖。与大鼠肝微粒体温育后,发现这两种羟基化衍生物是奥利伐定的主要体外代谢产物。用苯并[a] py进行的动物预处理引起两种微粒体羟基化的大量增加,而用苯巴比妥进行的预处理则引起微弱的增加,在两种情况下保留的9-羟基化/ 7-羟基化比率均大于1。还已经发现两种羟基脂蛋白是大鼠胆汁中脂蛋白的主要体内代谢产物,其为葡糖醛酸苷和硫酸盐结合物。用苯并[a] py进行动物预处理可将胆汁中9-羟基脂蛋白/ 7-羟基脂蛋白的排泄值降低到小于1。在体外和体内实验中,通过HPLC和UV-可见,MS和1H NMR谱鉴定游离代谢物。第9位的羟化作用增强了对白血病L1210细胞的体外细胞毒性(ID50 = 0.06 microM,而相比于olivacine为2.03 microM),在第7位的羟化作用观察到了相反的作用(ID50 = 12.8 microM)。另一方