作者:Balvinder S. Vig、Philip J. Lorenzi、Sachin Mittal、Christopher P. Landowski、Ho‐Chul Shin、Henry I. Mosberg、John M. Hilfinger、Gordon L. Amidon
DOI:10.1023/a:1025745824632
日期:——
homogenates, the L-amino acid ester prodrugs hydrolyzed 10 to 75 times faster than the corresponding D-amino acid ester prodrugs. Pro and Phe ester prodrugs hydrolyzed much faster (3- to 30-fold) than the corresponding Val ester prodrugs. Further, the 5'-monoester prodrugs hydrolyzed significantly faster (3-fold) than the 3',5'-diester prodrugs. CONCLUSIONS Novel amino acid ester prodrugs of FUdR were successfully
目的合成氟尿苷(FUdR)的氨基酸酯前药,并研究结构,立体化学和蛋白质的酯化部位对这些前药在Caco-2细胞匀浆中水解速率的影响。方法采用既定程序合成FUdR的氨基酸酯前药。在人腺癌细胞系(Caco-2)匀浆和pH 7.4磷酸盐缓冲液中评估了前药水解的动力学。结果合成并表征了以脯氨酸,L-缬氨酸,D-缬氨酸,L-苯丙氨酸和D-苯丙氨酸为原基的FUdR的3'-单酯,5'-单酯和3',5'-二酯前药。在Caco-2细胞匀浆中,L-氨基酸酯前药的水解速度是相应D-氨基酸酯前药的10到75倍。Pro和Phe酯前药的水解速度比相应的Val酯前药快得多(3至30倍)。此外,5'-单酯前药的水解明显快于3',5'-二酯前药的水解(3倍)。结论成功合成了新型的FUdR氨基酸酯前药。此处显示的结果清楚地表明,Caco-2细胞匀浆中FUdR前药的活化速率受该结构的结构,立体化学和酯化部位的影响。最后,5'-V