Mechanistic Studies on Regioselective Dephosphorylation of Phosphate Prodrugs during a Facile Synthesis of Antitumor Phosphorylated 2-Phenyl-6,7-methylenedioxy-1H-quinolin-4-one
作者:Yung-Yi Cheng、Chin-Yu Liu、Li-Jiau Huang、Chi-Hung Huang、Kuo-Hsiung Lee、Cheng-Tung Lin、Sheng-Chu Kuo
DOI:10.3390/molecules18078028
日期:——
Phosphorylation of 2-(3-hydroxy-5-methoxyphenyl)-6,7-methylenedioxy-1H-quinolin-4-one (1) afforded diphosphate 2. We found that, upon treatment with methanol under mild conditions, 2 can undergo facile and highly regioselective dephosphorylation to give the monophosphate 3, with a phosphate group remaining on the phenyl ring. The details of the dephosphorylation process were postulated and then probed by LC-MS and HPLC analyses. Furthermore, as a preliminary study, the water soluble monophosphate prodrug 4 was tested for antitumor activity against a MCF-7 xenograft nude mice model.
2-(3-羟基-5-甲氧基苯基)-6,7-亚甲二氧基-1H-喹啉-4-酮(1)的磷酸化得到二磷酸2。我们发现,在温和条件下用甲醇处理后,2可以很容易地发生磷酸化。高度区域选择性去磷酸化得到单磷酸3,其中苯环上保留有磷酸基团。假设去磷酸化过程的细节,然后通过 LC-MS 和 HPLC 分析进行探讨。此外,作为初步研究,水溶性单磷酸盐前药4针对MCF-7异种移植裸鼠模型进行了抗肿瘤活性测试。