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。